Nickel Acetylacetonate-Induced 1,4-Additions of 1-Alkenyl(Disiamyl)Boranes to α,β-Unsaturated Ketones, Esters and Nitriles
作者:Teiji Yanagi、Hirotomo Sasaki、Akira Suzuki、Norio Miyaura
DOI:10.1080/00397919608004563
日期:1996.7
conjugate addition of 1-alkenyl(disiamyl)boranes to α,β-unsaturated ketones, esters, or nitriles was carried out in the presence of Ni(acac)2 and triethylamine in DMF. The reactions provided γ,δ-unsaturated ketones, esters, and nitriles in high yields while retaining the original configuration of the 1-alkenylboranes. A similar addition reaction of 1-alkenyl(disiamyl)boranes to 1-acetyl-2-vinylcyclopropane
摘要 在 Ni(acac)2 和三乙胺的 DMF 存在下,进行了 1-烯基(二异戊基)硼烷与 α,β-不饱和酮、酯或腈的共轭加成。该反应以高产率提供了 γ,δ-不饱和酮、酯和腈,同时保留了 1-烯基硼烷的原始构型。1-烯基(二异戊基)硼烷与 1-乙酰基-2-乙烯基环丙烷的类似加成反应产生末端和内部偶联产物,5,8-链二烯-2-on和5-乙烯基-6-链烯-2-on,在某些情况下以高产率具有有利于末端加成产物的高区域选择性。