Synthesis of (1-Halo-1-alkenyl)trimethylsilanes via<i>gem</i>-Trimethylsilylation of Vinyl Halides
作者:Nobujiro Shimizu、Fumihiro Shibata、Yuho Tsuno
DOI:10.1246/bcsj.60.777
日期:1987.2
Various vinyl halides including enol silyl ethers of α-halo ketones and esters give the corresponding (1-halo-1-alkenyl)trimethylsilanes in fair to good yields on treatment with lithium diisopropylamide at Dry Ice temperature in the presence of chlorotrimethylsilane.
α-ALKYLATION AND α-ARYLATION OF CARBONYL GROUPS: NICKEL-PHOSPHINE COMPLEX-CATALYZED GRIGNARD COUPLING OF<i>vic</i>-BROMOTRIMETHYLSILOXYALKENES
作者:Kohei Tamao、Michio Zembayashi、Makoto Kumada
DOI:10.1246/cl.1976.1239
日期:1976.11.5
In the presence of [Ni(dppp)Cl2] as a catalyst, vic-bromotrimethylsiloxyalkenes (1)couple with Grignard reagents to produce alkylated and arylated silyl enol ethers, or, after acid hydrolysis, the corresponding α-alkylated and α-arylated carbonyl compounds. In these reactions, 1 can be regarded as an enolonium equivalent.