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Any organic compound containing a C=C=C group
In organic chemistry, allenes are organic compounds in which one carbon atom has double bonds with each of its two adjacent carbon atoms (R2C=C=CR2, where
Allene
American actress
Allene Crater (December 1876 – August 1957) was an American actress born in Denver, Colorado. She became interested in theater while in high school, performing
Allene_Crater
Name list
Allene is a feminine given name. Notable people with the name include: Allene Wilson Groves (1896–1986), American civic leader Allene Jeanes (1906–1995)
Allene_(given_name)
American actress (1928–2019)
Emma Allene Roberts (September 1, 1928 – May 9, 2019) was an American actress. Roberts was born in Birmingham, Alabama, the daughter of Frank W. Roberts
Allene_Roberts
Chemical reaction
The Doering–LaFlamme allene synthesis is a reaction of alkenes that converts them to allenes by insertion of a carbon atom. This name reaction is named
Doering–LaFlamme allene synthesis
Doering–LaFlamme_allene_synthesis
Fictional character appearing in American comic books published by Marvel Comics
Squirrel Girl (Doreen Allene Green) is a superheroine appearing in American comic books published by Marvel Comics. Created by writer Will Murray and writer-artist
Squirrel_Girl
American chemical researcher (1906–1995)
Allene Rosalind Jeanes (July 19, 1906 – December 11, 1995) was an American chemist whose pioneering work significantly impacted carbohydrate chemistry
Allene_Jeanes
American Christian minister and televangelist (1931–2026)
Marilyn Allene Hickey (July 1, 1931 – April 25, 2026) was an American Christian televangelist, pastor, bible teacher, motivational speaker and author,
Marilyn_Hickey
American socialite (1872–1955)
Allene Tew Hostetter Nichols Burchard Reuß zu Köstritz de Kotzebue (July 7, 1872 – May 1, 1955) was an American socialite during the Gilded Age. She was
Allene_Tew
The Crabbé reaction (or Crabbé allene synthesis, Crabbé–Ma allene synthesis) is an organic reaction that converts a terminal alkyne and aldehyde (or, sometimes
Crabbé_reaction
organic chemistry, an allene oxide is an epoxide of an allene. The parent compound 2-methylideneoxirane [wd], also known as allene oxide, is CH2=C(−O−)CH2
Allene_oxide
American actress
Allene Ray (born Allene Ray Burch; January 2, 1901 – May 5, 1979) was an American film actress. Born in Devine, Texas, Ray grew up on her father's ranch
Allene_Ray
Organic compound (H2C=C=CH2)
(/ˌproʊpəˈdaɪiːn/ PROH-pə-DY-een) or allene (/ˈæliːn/ AL-een) is the organic compound with the formula H2C=C=CH2. It is the simplest allene, i.e. a compound with two
Propadiene
23rd president general of the Daughters of the American Revolution
Allene Wilson Groves (May 24, 1896 – August 27, 1986) was an American civic leader who served as the 23rd president general of the Daughters of the American
Allene_Wilson_Groves
Chemical compound
it is not encountered in everyday life. It is classified as a carbene, allene and an oxocarbon. Dicarbon monoxide is a product of the photolysis of carbon
Dicarbon_monoxide
In organic chemistry, the Myers allene synthesis is a chemical reaction that converts a propargyl alcohol into an allene by way of an arenesulfonylhydrazine
Myers_allene_synthesis
Chemical compound
of two chemicals called glutinic acid), is an allene-containing dicarboxylic acid. It was the first allene to be synthesized, in 1887, but the structure
Penta-2,3-dienedioic_acid
In enzymology, an allene-oxide cyclase (EC 5.3.99.6) is an enzyme that belongs to the family of isomerases, specifically a class of other intramolecular
Allene_oxide_cyclase
American aviator, aerospace engineer and business magnate (1905–1976)
Howard Hughes Holdings Inc. Howard Robard Hughes Jr. was the only child of Allene Stone Gano (1883–1922) and of Howard R. Hughes Sr. (1869–1924), a successful
Howard_Hughes
American columnist, film critic (1903–1986)
Allene Rosamond Talmey (January 11, 1903 – March 13, 1986), later Allene Talmey Plaut, was an American columnist, editor, reporter and a film reviewer
Allene_Talmey
American chemist (1933–2025)
Allene Johnson (April 20, 1933 – November 2, 2025) was an American chemical educator who taught in the Summit, New Jersey school system for over 40 years
Allene_Johnson
Serial killer known as the Shopping Cart Killer (born 1986)
Anthony Eugene Robinson (born September 3, 1986) is an American serial killer who murdered at least four women in the Washington, D.C. area and transported
Anthony Robinson (serial killer)
Anthony_Robinson_(serial_killer)
Census-designated place in Arkansas, United States
Alleene (also Aleene, Allene, Lawrenceville, Mineola, and Minneola) is an unincorporated community and census-designated place (CDP) in Little River County
Alleene,_Arkansas
American industrialist (1892–1976)
Jeanette Demont (married 1923 – divorced 1926); one son, George F. Getty II. Allene Ashby (1926–1928); no children. Getty met 17-year-old Ashby, the daughter
J._Paul_Getty
1947 film directed by Delmer Daves
starring Edward G. Robinson, Lon McCallister, Judith Anderson, Rory Calhoun, Allene Roberts, and Julie London. Its plot follows a young woman raised by a brother
The_Red_House_(film)
1938 American film
screenplay was written by David Hertz, based on the novel Summer Lightning by Allene Corliss. The film stars Joan Bennett and Henry Fonda. Julie and Ives are
I_Met_My_Love_Again
Chemical reaction
Myers, Andrew G.; Zheng, Bin (1996). "New and Stereospecific Synthesis of Allenes in a Single Step from Propargylic Alcohols". Journal of the American Chemical
Mitsunobu_reaction
1949 film by Nicholas Ray
Morton John Derek as Nick Romano George Macready as Dist. Atty. Kerman Allene Roberts as Emma Romano Candy Toxton as Adele Morton (credited as Susan Perry)
Knock_on_Any_Door
1951 film by Max Nosseck
crime film noir directed by Max Nosseck and starring Lawrence Tierney, Allene Roberts, Marjorie Riordan and Edward Tierney. Vincent Lubeck is a habitual
The_Hoodlum_(1951_film)
Alkyne hydrocarbon compound with three carbon atoms
CH3C≡CH. It is a component of MAPD gas—along with its isomer propadiene (allene), which was commonly used in gas welding. Unlike acetylene, propyne can
Propyne
Chemical reaction
an alkyne and an allene. First, the base deprotonates the less-substituted methylene adjacent to the alkyne group, to form an allene anion. The anion
Alkyne_zipper_reaction
2013 American film
Thomas as Kurtz Bailey Anne Borders as Cody Rebecca Marshall as Phoebe Allene Quincy as Brenda Adrienne Wilkinson as Nancy Doug Jones as Joseph Sherilyn
Raze_(film)
American businessman and inventor (1869–1924)
the surface of the earth. — Howard Hughes Sr., 1912 Hughes Sr. married Allene Stone Gano, on June 24, 1904, in Dallas County, Texas, and engaged in various
Howard_R._Hughes_Sr.
Chemical compound
with it. It is a colorless flammable gas, one of the simplest substituted allenes. The C4-fraction of petroleum obtained by cracking and separated by distillation
1,2-Butadiene
Chemical compound
of allene oxide synthase to form an allene oxide. The rearrangement of allene oxide to form 12-oxophytodienoic acid is catalyzed by the enzyme allene oxide
Jasmonic_acid
Polysaccharide gum used as a food additive and thickener
of bacteria used, Xanthomonas campestris. Xanthan gum was discovered by Allene Rosalind Jeanes and her research team at the United States Department of
Xanthan_gum
Addition of an N–H group across a C=C or C≡C bond
amine across a carbon-carbon multiple bond of an alkene, alkyne, diene, or allene. In the ideal case, hydroamination is atom economical and green; and the
Hydroamination
Hydrocarbon compound made of a 5-carbon chain with two single and two double bonds
formula C5H8. The inventory of pentadienes include: 1,2-pentadiene, or ethyl allene, H2C=C=CH−CH2−CH3. It and 2,3-pentadiene are the least common isomers of
Pentadiene
Relationships conference in Geneva, Switzerland as a delegate. Clark married Allene Knighten in 1958. They had no children. He was a Baptist, and a 33rd degree
Felton_Grandison_Clark
American actor and activist (born 1949)
James Begley Jr. was born in Los Angeles on September 16, 1949, the son of Allene Jeanne Sanders and actor Ed Begley (1901–1970). His paternal grandparents
Ed_Begley_Jr.
American educator and journalist
office 1953–1956 Preceded by Marguerite Courtright Patton Succeeded by Allene Wilson Groves Personal details Born (1896-08-06)August 6, 1896 New Bern
Gertrude_Sprague_Carraway
1926 film
Chan, although the main stars are Allene Ray and Walter Miller. The serial film is now considered to be lost. Allene Ray as Carry Egan Walter Miller as
The House Without a Key (serial)
The_House_Without_a_Key_(serial)
American business and entertainment family
his second wife, Jacqueline (Manewal) Riordan. 2. With his second wife, Allene Gladys Ashby (1909–1970), J. Paul Getty had no children. 3. With his third
Getty_family
Index of chemical compounds with the same molecular formula
alkene Propyne (a.k.a. methylacetylene), a common alkyne Propadiene, an allene This set index page lists chemical structure articles associated with the
C3H4
Historic house in Georgia, United States
The Herman and Allene Shaver House in Wayside, Georgia was built in 1936 and was listed on the National Register of Historic Places in 2013. It was designed
Herman and Allene Shaver House
Herman_and_Allene_Shaver_House
American actress (1923–2008)
Rita Allene Quigley (March 31, 1923 – August 25, 2008) was an American actress. Quigley was the daughter of Mr. and Mrs. Wayne Quigley. Her father was
Rita_Quigley
1929 film
American Western film directed by Leo D. Maloney and starring Maloney, Allene Ray, Jack Perrin and Lydia Knott. It is considered to be the first all-talking
Overland_Bound
Chemical compound
2-butadiene, which is a cumulated diene with structure H2C=C=CH−CH3. This allene has no industrial significance. In 1863, French chemist E. Caventou isolated
Butadiene
Florida politician and author
Paula Allene Stark is an American politician and member of the Florida House of Representatives for the 47th district. She was first elected to office
Paula_Stark
Fortieth Door George B. Seitz Allene Ray, Bruce Gordon A serial with ten episodes. Galloping Hoofs George B. Seitz Allene Ray, Johnnie Walker A ten-part
List of lost silent films (1920–1924)
List_of_lost_silent_films_(1920–1924)
1937 film by Christy Cabanne
an interest in the case. Turrentine argued that the pattern of cuts on Allene Lamson's head — he described them as three horizontal and one vertical —
We_Who_Are_About_to_Die
Dutch writer and historian (born 1962)
published De Amerikaanse prinses, a reconstruction of the eventful life of Allene Tew, the American godmother of Princess Beatrix, which occupied the top
Annejet_van_der_Zijl
American football player (born 1962)
marriage. They have four children. On August 7, 2015, Fryar and his mother, Allene McGhee, were found guilty of conspiring to defraud six banks and a mortgage
Irving_Fryar
Index of chemical compounds with the same molecular formula
"Retrodienic reactions XVI - flash thermolytic generation of reactive functional allenes". Tetrahedron Letters. 25 (32): 3459–3460. doi:10.1016/S0040-4039(01)91046-9
C3H4O
American actor (1873–1959)
Oakley, he was given her unfinished autobiography. Stone and his wife, Allene Crater, whom he met in the company of The Wizard of Oz, had three daughters
Fred_Stone
Hydrocarbon compound containing one or more C=C bonds
two overlapping double bonds (C=C=C) are called allenes—the simplest such compound is itself called allene—and those with three or more overlapping bonds
Alkene
Chemical group, –C(=O)CH3
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Acetyl_group
Organic compound
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Urea
Chemical compound
in wine, but mass production was only possible after the development by Allene Jeanes of a process using bacteria. Dental plaque is rich in dextrans. Dextran
Dextran
elections were held on July 26, 1952. Allan Shivers, incumbent Governor Allene M. Traylor, housewife Ralph W. Yarborough, attorney Shivers endorsed the
1952 Texas gubernatorial election
1952_Texas_gubernatorial_election
Hydrocarbon compound containing one or more C≡C bonds
or transition metals to allenes. Due to their comparable thermodynamic stabilities, the equilibrium constant of alkyne/allene isomerization is generally
Alkyne
Chemical compound
Levulinate with (2-Bromoallyl)Diisopropoxyborane Prepared by Haloboration of Allene". Organic Syntheses. 75: 129. doi:10.15227/orgsyn.075.0129. Matyáš, Robert;
Diisopropyl_ether
American minister, writer, and scholar
Occupations Evangelist, Pastor Spouses Ruby Opal Coppedge (1932), Julia Allene Wright (1936), Velma Jaggers (née Jaggers) (1957-2004) Children Joan Jaggers
Orval_Lee_Jaggers
1924 film
of the book, very little takes place in the West and none in California. Allene Ray as Ellen Meriwether Harold Miller as John Cowles Bud Osborne as Gordon
The_Way_of_a_Man
Organic reaction
an organic reaction for converting a geminal dihalo cyclopropane to an allene using an organolithium base. This rearrangement reaction is named after
Skattebøl_rearrangement
Petrochemical process to break down saturated hydrocarbons in smaller molecules
the stream is hydrogenated to convert the methylacetylene and propadiene (allene) mix. This stream is then sent to the C3 splitter. The overhead stream from
Steam_cracking
American politician (1930–2018)
first elected to the house in 1984, defeating incumbent representative Allene Craddock for renomination. He did not seek reelection in 1992. Gregory died
Bud Gregory (American politician)
Bud_Gregory_(American_politician)
1929 film
directed by Spencer Gordon Bennet and Thomas Storey, starring Allene Ray and Walter Miller. Allene Ray as Dora Drake Walter Miller as Ted Bradley Frank Lackteen
The_Black_Book_(serial)
Chemical compound
then combined with hydrogen chloride to afford 4-chloro-1,2-butadiene (an allene derivative), which in the presence of copper(I) chloride, rearranges to
Chloroprene
Illustrator and Wildlife Painter
America (Doubleday, 1981) and "Parrots of South Florida", authored by Susan Allene Epps (published by Pineapple Press in 2007). He moved with his family moved
Karl_Karalus
Chemical group (>N–C(=O)–O–)
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Carbamate
Type of enzyme
2-trans-enoyl-CoA isomerase, ∆3(cis),∆2(trans)-enoyl-CoA isomerase, or acetylene-allene isomerase, is an enzyme that catalyzes the conversion of cis- or trans-double
Enoyl-CoA_isomerase
Class of chemical compounds
R2C=C=NR'. A ketenimine is a cumulated alkene and imine and is related to an allene and a ketene. When the substituents on the terminal carbon differ, the ketenimines
Ketenimines
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Arsonic acid (functional group)
Arsonic_acid_(functional_group)
Hydrocarbon ring molecule containing a C≡C bond
The desired product could be obtained as a mixture with the corresponding allene as the major product. Further work in this area was aimed at developing
Cycloalkyne
Any organic compound having a sulfanyl group (–SH)
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Thiol
Chemical group (–N=C=O)
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Isocyanate
First woman to be ordained an Episcopal priest
Jacqueline Allene Means (1936–2025) was an American Anglican priest. On January 1, 1977, she became the first woman to be regularly ordained a priest in
Jacqueline_Means
1924 film
directed by George B. Seitz and starring Allene Ray and Johnnie Walker. The film is now considered to be lost. Allene Ray as Carole Page Johnnie Walker as
Galloping_Hoofs
American medical researcher
contributions to government on February 22, 1962. Shown from left to right are Dr. Allene R. Jeanes, Research Chemist at the Department of Agriculture; Evelyn Harrison
Thelma_Brumfield_Dunn
Chemical reaction which transfers an alkyl group between molecules
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Transalkylation
American evangelist (1906–1956)
1933. He lost his life on June 18, 1956, aged 50, while rescuing a girl, Allene Beck, from drowning during water-skiing in Schroon Lake, New York. Trotman
Dawson_Trotman
Concept in organic chemistry
Claisen rearrangement): Gold(I) Lewis acid coordination activates this allene-alkyne for a 6-endo-dig cyclization (and subsequent Nazarov annulation):
Baldwin's_rules
American businessman (1871–1941)
West Jr., Wesley West, Mildred West Parent(s) Silas W. West, Mattie (née Clark) West Relatives Westley W. West (Brother), Allene West Bogutski (Niece)
James_Marion_West_Sr.
Apartment building in Manhattan, New York
financier; owned the Rockefeller apartment until selling to Schwarzman. Allene Tew – American socialite in the Gilded Age. Occupied two different units
740_Park_Avenue
consisting of 15 episodes. Play Ball Spencer Gordon Bennet Walter Miller, Allene Ray A ten-part serial. The Prophecy of the Lake José Maria Velasco Maidana
List of lost silent films (1925–1929)
List_of_lost_silent_films_(1925–1929)
sued Hostetter's widow and received $115,000. In 1891, Hostetter married Allene Tew. The young couple had a country house, Raccoon Farm in Beaver County
Theodore_R._Hostetter
Organosulfur compound of the form R–SOH
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Sulfenic_acid
Chemical compounds with the structure R–O–O–R'
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Peroxide
Chemical compound
the first discovered reaction of a nitroso with metal multiple bonds. Allenes react with the ditungsten complex forming adducts, e.g.,[citation needed]
Hexa(tert-butoxy)ditungsten(III)
Hexa(tert-butoxy)ditungsten(III)
Topics referred to by the same term
Alene Word (1906–1990) American politician Coeur d'Alene (disambiguation) Allene (given name) This disambiguation page lists articles associated with the
Alene
Organic compounds of the form RC(=O)NR′R″
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Amide
Historic mansion in Newport, Rhode Island, US
rented out the home to Robert R. Young, a New York financier. In 1940, Allene Tew and her fifth husband, Count Pavel de Kotzebue, purchased Beechwood
Beechwood_(Astor_mansion)
Chemical compound
geminal halide hydrolysis. Dichlorocyclopropanes may also be converted to allenes in the Skattebøl rearrangement. Dichlorocarbene reacts with tetrachloroethylene
Dichlorocarbene
Chemical compound
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Glycidamide
City in Texas, United States
consumer issues, pets, travel, food, home improvement, health, and much more Allene Jeanes (1906–1995), a chemical engineer whose work included the development
Waco,_Texas
Justice) Thelma Brumfield Dunn Evelyn Harrison (Civil Service Commission) Allene Jeanes Nancy Roman Source: Eleanor L. Makel Bessie Margolin Katharine Kniskern
Federal_Woman's_Award
Chemical group (–CH2–CH3)
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Ethyl_group
Butyl Pentyl Methylene Bridge Methine Alkene Vinyl Allyl 1-Propenyl Crotyl Allene Cumulene Aryl Phenyl Benzyl Alkyne Carbene Only carbon, hydrogen, and oxygen
Reductone
Award for women in chemistry
Emerson 1953 Leonora N. Bilger 1954 Betty Sullivan 1955 Grace Medes 1956 Allene R. Jeanes 1957 Lucy W. Pickett 1958 Arda A. Green 1959 Dorothy Virginia
Garvan–Olin_Medal
ALLENE
ALLENE
ALLENE
Girl/Female
Hindu, Indian, Traditional
Creation
Boy/Male
Welsh
Legendary son of Don.
Boy/Male
American, Australian, Hebrew
Intellect
Girl/Female
Tamil
Safety
Girl/Female
Latin American
Graced with God's bounty.
Girl/Female
Bengali, Indian, Traditional
Morning Raga
Girl/Female
Hindu
Little gift, End less
Girl/Female
Biblical
Shadow, covering, defense.
Female
Hungarian
Pet form of Hungarian Sára, SÃRIKA means "noble lady, princess."
Boy/Male
Gujarati, Hindu, Indian, Kannada, Tamil
Lord Vishnu
ALLENE
ALLENE
ALLENE
ALLENE
ALLENE