Nickel-catalyzed insertions of vinylidenes into Si–H bonds
作者:Sourish Biswas、Sudipta Pal、Christopher Uyeda
DOI:10.1039/d0cc05970f
日期:——
A nickel-catalyzed reductive cyclization of 1,1-dichloroalkenyl silanes is reported. The products of this reaction are unsaturated five- or six-membered silacycles. Intermolecular variants are also described, providing access to trisubstituted vinyl silanes that are not accessible by alkyne hydrosilylation or sila-Heck-type processes. A variety of silanes can be utilized, including those that serve
Synthesis of Unsaturated Silyl Heterocycles via an Intramolecular Silyl-Heck Reaction
作者:William B. Reid、Jesse R. McAtee、Donald A. Watson
DOI:10.1021/acs.organomet.9b00498
日期:2019.10.14
We report the synthesis of unsaturated silacycles via an intramolecular silyl-Heck reaction. Using palladium catalysis, silicon electrophiles tethered to alkenes cyclize to form 5- and 6-membered silicon heterocycles. The effects of alkene substitution and tether length on the efficiency and regioselectivity of the cyclizations are described. Finally, through the use of an intramolecular tether, the
The preparation and properties of cyclic silicon olefins and diene systems
作者:Robert Benkeser、Robert F. Cunico
DOI:10.1016/s0022-328x(00)88834-8
日期:1965.10
was identified as 1,1-dichloro-4-bromo-1-sila-2-cyclohexene. Pyrolysis of the latter produced principally 1,1-dichloro-1-sila-2,4-cyclohexadiene. This cyclic diene reacted with phenyllithium to produce 1,1-diphenyl-1-sila-2,4-cyclohexadiene, a compound which reacted further with maleic anhydride to form a Diels-Alder adduct.