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 published on a yearly basis
Papers
More filters
TL;DR: In this article, the rate coefficients for the reaction between atomic chlorine and a number of naturally occurring species have been measured at ambient temperature and atmospheric pressure using the relative rate technique, and the values obtained were (4.0 ± 0.8) × 10-10, (2.1 ± 0., 0.5), (3.2 ± 0, 0.6), (1.5) × 5.1 s-1, and (4 9 ± 0.5), respectively.
Abstract: The rate coefficients for the reaction between atomic chlorine and a number of naturally occurring species have been measured at ambient temperature and atmospheric pressure using the relative rate technique. The values obtained were (4.0 ± 0.8) × 10-10, (2.1 ± 0.5) × 10-10, (3.2 ± 0.5) × 10-10, and (4.9 ± 0.5) × 10-10 cm3 molecule-1 s-1, for reactions with isoprene, methyl vinyl ketone, methacrolein and δ3-carene, respectively. The value obtained for isoprene compares favourably with previously reported values. No values have been reported to date for the rate constants of the other reactions.
29 citations
TL;DR: This study reports the first experimental evidence of this novel decay pathway, which is predicted to be the dominant atmospheric sink for specific conformational forms of MVK-oxide and MACR-oxide with the vinyl substituent adjacent to the terminal O atom.
Abstract: Ozonolysis of isoprene, one of the most abundant volatile organic compounds emitted into the Earth’s atmosphere, generates two four-carbon unsaturated Criegee intermediates, methyl vinyl ketone oxi...
29 citations
TL;DR: In this article, the authors performed a laboratory experiment of the aqueous ozonolysis of isoprene at different pHs (3 −7) and temperatures (4 −25 °C).
Abstract: . The aqueous phase reaction of volatile organic compounds (VOCs) has not been considered in most analyses of atmospheric chemical processes. However, some experimental evidence has shown that, compared to the corresponding gas phase reaction, the aqueous chemical processes of VOCs in the bulk solutions and surfaces of ambient wet particles (cloud, fog, and wet aerosols) may potentially contribute to the products and formation of secondary organic aerosol (SOA). In the present study, we performed a laboratory experiment of the aqueous ozonolysis of isoprene at different pHs (3–7) and temperatures (4–25 °C). We detected three important kinds of products, including carbonyl compounds, peroxide compounds, and organic acids. Our results showed that the molar yields of these products were nearly independent of the investigated pHs and temperatures, those were (1) carbonyls: 56.7 ± 3.7 % formaldehyde, 42.8 ± 2.5 % methacrolein (MAC), and 57.7 ± 3.4 % methyl vinyl ketone (MVK); (2) peroxides: 53.4 ± 4.1 % hydrogen peroxide (H2O2) and 15.1 ± 3.1 % hydroxylmethyl hydroperoxide (HMHP); and (3) organic acids: undetectable (
28 citations
TL;DR: In this paper, the Baylis-Hillman reaction of N-arylidenediphenylphosphinamides with methyl vinyl ketone (MVK), methyl acrylate or acrylonitrile was studied.
28 citations
TL;DR: Model studies for the syntheses of phosphonate analogs of sphingomyelin and ceramide 1-phosphate are described and confirmation of stereochemical assignments in 11 (3:1, trans:cis) was accomplished via NOE experiments.
Abstract: Model studies for the syntheses of phosphonate analogs of sphingomyelin and ceramide 1-phosphate are described. The pentacovalent oxaphospholene 3b (derived from methyl vinyl ketone and triethyl phosphite) readily condensed with dialkyl azodicarboxylates (R = Et, t-Bu, CH2CCl3) to form β-hydrazido γ-ketophosphonates 5 and 8 in excellent yields. Cleavage of the N−N bond in 5a (R = Et) or 5b (R = t-Bu) via standard methods was unsuccessful. Upon reduction with NaBH4, 8 produced the oxazolidinone 9 (93%) as a diastereomeric mixture of 3:1. Treatment of 9 with Zn/HOAc/acetone at rt readily cleaved the N−N bond to form 11 (78−83%). Confirmation of stereochemical assignments in 11 (3:1, trans:cis) was accomplished via NOE experiments.
28 citations