764-48-7Relevant articles and documents
Modified copolymers of bifunctional vinyl ethers with methyl vinyl sulfide as active matrices of solid superbases
Trofimov,Morozova,Mikhaleva,Markova,Tatarinova,Henkelmann
experimental part, p. 2111 - 2116 (2010/05/02)
Reactive linear and crosslinked copolymers of diethylene glycol divinyl ether and ethylene glycol vinyl glycidyl ether with methyl vinyl sulfide have been synthesized in the presence of 2,2′-azobis(isobutyronitrile) (2%, 60 °C, 45-55 h) in ～53% yield. The hydrolyzed at the residual vinyloxy and epoxy groups and oxidized at the methylthio groups copolymers upon treatment with KOH afford alkoxide (complex) and crown-like superbases. They are capable of catalyzing the acetone ethynylation, as well as the prototropic isomerization of methyl propargyl ether to allenyl methyl ether and vinylation of ethylene and diethylene glycols with acetylene.
PYROLYTIC TRANSFORMATION OF THE VINYL MONOETHERS OF DIOLS IN THE PRESENCE OF ALKALIS
Trofimov, B. A.,Oparina, L. A.,Parshina, L. N.,Lavrov, V. I.,Grigorenko, V. I.,Zhumabekov, M. K.
, p. 1424 - 1428 (2007/10/02)
The alkaline pyrolysis of the vinyl monoethers of diols takes place at 170-250 deg C and is accompanied by cycloacetalization (ethylene glycol, 1,3-propanediol), by processes involving cleavage of the C-O bonds (diethylene glycol, 1,4-butanediol), and also by the release of hydrogen, carbon dioxide, methane, ethane, acetylene, and C3 to C5 hydrocarbons.Distillation of ethylene glycol vinyl monoether with potassium hydroxide, sodium hydroxide, and lithium hydroxide can result in explosion as a result of the vigorous and exothermic release of gas.
HOMOLYTIC DISPLACEMENT AT CARBON. XI. INTRAMOLECULAR HOMOLYTIC DISPLACEMENT AS A ROUTE TO CYCLOPENTANE AND TETRAHYDROFURAN DERIVATIVES FROM HEX-5-ENYL- AND HEX-3-OXO-5-ENYLCOBALOXIMES
Bongars, Christophe,Bougeard, Peter,Bury, Adrian,Cooksey, Christopher J.,Johnson, Michael D.,et al.
, p. 163 - 172 (2007/10/02)
5-Methylhex-5-enylcobaloxime reacts with carbon tetrachloride and with fluorotrichloromethane at 80-100 deg C to give substantially pure 1-methyl-1-(Β,Β,Β-trichloroethyl)- and 1-methyl-1-(β-fluoro-β,β-dichloroethyl)-cyclopentane.Hex-5-enylcobaloxime also gives trichloroethylcyclopentane from carbon tetrachloride, but the yield is dependent on the concentration of carbon tetrachloride.Similar cyclisation to give trichloroethyl- or fluorodichloroethyltetrahydrofuran is observed in the reactions of hex-3-oxo-5-enylcobaloxime with carbon tetrachloride and fluorotrichloromethane.However, no cyclisation was observed in the reactions of the ester, hex-2-one-3-oxo-5-enylcobaloxime, with carbon tetrachloride.These reactions are believed to take place by attack of a polyhalogenomethyl radical at the terminal unsaturated carbon of the organic ligand, followed either by an intramolecular homolytic displacement in which the carbon radical at position-5 attacks carbon-1 with displacement of cobaloxime(II), or by a halogen atom abstraction.
