scispace - formally typeset
Search or ask a question
Topic

Methyl vinyl ketone

About: Methyl vinyl ketone is a research topic. Over the lifetime, 1510 publications have been published within this topic receiving 26839 citations. The topic is also known as: 3-buten-2-one & gamma-oxo-alpha-butylene.


Papers
More filters
Journal ArticleDOI
TL;DR: In this article , the 2-butenal oxide Criegee intermediate was characterized on its first π* ← π electronic transition and by the resultant dissociation dynamics to O (1D) + 2-Butenal [(CH3CH═CH)CHO] products.
Abstract: The 2-butenal oxide Criegee intermediate [(CH3CH═CH)CHOO], an isomer of the four-carbon unsaturated Criegee intermediates derived from isoprene ozonolysis, is characterized on its first π* ← π electronic transition and by the resultant dissociation dynamics to O (1D) + 2-butenal [(CH3CH═CH)CHO] products. The electronic spectrum of 2-butenal oxide under jet-cooled conditions is observed to be broad and unstructured with peak absorption at 373 nm, spanning to half maxima at 320 and 420 nm, and in good accord with the computed vertical excitation energies and absorption spectra obtained for its lowest energy conformers. The distribution of total kinetic energy released to products is ascertained through velocity map imaging of the O (1D) products. About half of the available energy, deduced from the theoretically computed asymptotic energy, is accommodated as internal excitation of the 2-butenal fragment. A reduced impulsive model is introduced to interpret the photodissociation dynamics, which accounts for the geometric changes between 2-butenal oxide and the 2-butenal fragment, and vibrational activation of associated modes in the 2-butenal product. Application of the reduced impulsive model to the photodissociation of isomeric methyl vinyl ketone oxide reveals greater internal activation of the methyl vinyl ketone product arising from methyl internal rotation and rock, which is distinctly different from the dissociation dynamics of 2-butenal oxide or methacrolein oxide.

4 citations

Journal ArticleDOI
TL;DR: In this article, the authors performed a systematic study on reactions of selenium dichloride and dibromide with unsaturated compounds, and found that selenion dihalides react with divinyl sulfide and divinyl selenide with formation of the corresponding Markovnikov adducts, 2,6-dihalo-1,4-thiaselenanes and -diselenane.
Abstract: We perform systematic studies on reactions of selenium dichloride and dibromide with unsaturated compounds [2–5]. Selenium dihalides were found to react with divinyl sulfide and divinyl selenide with formation of the corresponding Markovnikov adducts, 2,6-dihalo-1,4-thiaselenanes and -diselenanes, whose subsequent rearrangement yields thermodynamically more stable 1,3-thiaselenolanes and -diselenolanes [2]. Unlike vinyl sulfides, the double C=C bond in vinyl sulfones is deactivated toward electrophilic addition due to strong electron-withdrawing effect of the sulfonyl group. Reactions of selenium dihalides with divinyl sulfone are slower than with divinyl sulfide, and selenium adds to both βand α-position of the double bond with formation of fourand five-membered heterocycles [3].

4 citations

Journal ArticleDOI
TL;DR: In this paper, the synthesis of tritiated methyl vinyl ketone by base catalysed exchange and its use in determining the ketone content of styrene/methyl vinyl kone copolymers are reported.

4 citations

Journal ArticleDOI
TL;DR: In this article, a [η 6 -benzylcopper(I)]tricarbonylchromium complex was obtained and its 1,4-addition reaction with methyl vinyl ketone was carried out.

4 citations

Journal ArticleDOI
TL;DR: In this paper, the Schmidt reaction on poly(acrylic acid) in acetic acid solution will lead to intermolecular reactions of the intermediate with the solvent in preference to reactions with neighboring carboxyl groups on the polymer backbone.
Abstract: A study of the Schmidt reaction on several polymers with pendant carboxylic and ketone moieties was carried out. Four polymers were used as starting materials: (1) poly(methyl vinyl ketone), (2) poly(acrylic acid), (3) a copolymer of methyl vinyl ketone and acrylic acid, and (4) a copolymer of styrene and acrylic acid. Most reactions were conducted in an acetic acid medium with the exception of one reaction on poly(acrylic acid) which was done in dioxane and another on copolymer of styrene and acrylic acid done in chloroform. It was found that a Schmidt reaction on poly(acrylic acid) in acetic acid solution will lead to intermolecular reactions of the intermediate with the solvent in preference to reactions with neighboring carboxyl groups on the polymer backbone. A tendency of poly(acrylic acid) to form cyclic anhydrides under these reaction conditions interferes with the yield of acetamide units.

4 citations


Network Information
Related Topics (5)
Alkyl
223.5K papers, 2M citations
89% related
Reactivity (chemistry)
43.8K papers, 833.5K citations
89% related
Palladium
64.7K papers, 1.3M citations
87% related
Aryl
95.6K papers, 1.3M citations
87% related
Reaction rate constant
42.9K papers, 1M citations
86% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20238
202249
202121
202020
201910
201817