Vinylcyclo-hexane

In continuing the study of hydrosilation of alkylcyclohexenes, Benkeser et al. (13) studied in detail the addition of Cl3SiH (with H2PtCl6) to 1-, 3-, and 4-ethylcyclohexenes, as well as to ethylidene- and vinylcy-clohexenes. With an olefin/Cl3SiH ratio of 1/1.9 at reflux, vinylcyclo-hexane gave a 68% yield of adduct in 0.5 hours. The other olefins required much more time e.g., 96 hours was needed to achieve 83% yield from 3-ethylcyclohexene. Each olefin made the same adduct— C6HnCH2CH2SiCl3—and recovered olefins were mixtures of all possible... 

Traditional Ziegler-Natta and metallocene initiators polymerize a variety of monomers, including ethylene and a-olefins such as propene, 1-butene, 4-methyl-1-pentene, vinylcyclo-hexane, and styrene. 1,1-Disubstituted alkenes such as isobutylene are polymerized by some metallocene initiators, but the reaction proceeds by a cationic polymerization [Baird, 2000]. Polymerizations of styrene, 1,2-disubstituted alkenes, and alkynes are discussed in this section polymerization of 1,3-dienes is discussed in Sec. 8-10. The polymerization of polar monomers is discussed in Sec. 8-12. 

The isomerization polymerization with material transport makes it possible to distinguish between a polymerization by hydride shift as in 3-methylbutene-l (or 4-methylpentene-l, 4-methylhexene-l, or vinylcyclo-hexane),... 

The influence of steric factors on reactivity and on selectivity has been discussed for the catalysis, by a variety of phosphine complexes of ruthenium, iridium, and platinum, of the isomerization of 4-vinylcyclo-hexane. Titanium tetra-( - )-menthoxide plus tri-isobutylaluminium catalyse stereoselective isomerization of racemic alk-l-enes. ... 

A second major reaction of oxaspiropentanes as reactive epoxides is their elimination to form vinylcyclopropanols 29,49,62). A rapid elimination to vinylcyclo-propanols occurs when the oxaspiropentanes are exposed to lithium dialkylamides in hexane or pentane as exemplified in Eq. 34 and Table 4. 

Cyclohexane (main product), cyclohexene, vinylcyclohexane, vinylcyclo 100 hexane oligomers, methane, ethane, ethylene, propane, propylene, butane, butylene, hydrogen... 

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