Influence of functional substitution of allyl halides on their ni(co)4 promoted carbonylative cycloaddition with acetylenes
作者:Francisco Camps、Josep M. Moreto、Lluis Pages
DOI:10.1016/s0040-4020(01)92256-2
日期:1992.4
were shown to favour competing side reactions such as allyl self-coupling. However, only cyclopentenones were obtained from either centrally or terminally substituted silylallyl halides. Substitution at both ends of the allyl moiety led to the formation of 4,5-disubstituted cyclopentenones. Important mechanistic information could be achieved from determination of the relative stereochemistry in these
Etude de l'alkylation d'organolithiens allyliques monochlores: Synthese en une etape de chlorures allyliques secondaires ou tertiaires et/ou de chlorures vinyliques de configuration Z
作者:B. Mauze、P. Ongoka、L. Miginiac
DOI:10.1016/0022-328x(84)85127-x
日期:1984.3
Le chloroallyllithium et le gem-chloro(méthyl) allyllithium réagissent facilement avec une large variété d'agents alkylants, pour conduire, en une seule étape, à des chlorures allyliques secondaires ou tertiaires et/ou à des chlorures vinyliques de configuration Z.
乐chloroallyllithium等乐宝石氯(甲基)烯丙基锂réagissentfacilement AVEC UNE大综艺D'代理alkylants,倒conduire,EN UNE seule ETAPE,一个DES chlorures allyliques次级线圈,欧tertiaires等/ OU一个DES chlorures vinyliques去配置ž。
A NOVEL AND CONVENIENT REGIO-CONTROLLED SYNTHESIS OF α-HALOGEN-SUBSTITUTED ALLYLSILANES. STEREOSELECTIVE SYNTHESIS OF Z-ALKENYL HALIDES
作者:Akira Hosomi、Masatomo Ando、Hideki Sakurai
DOI:10.1246/cl.1984.1385
日期:1984.8.5
α-Halogen-substituted allylsilanes, prepared conveniently by the in situ reaction of lithiated allyl halides with chlorosilane in a regio-controlled manner, react with various electrophiles to give the corresponding alkenyl halides with high Z preference.
The synthesis of acetoxyendoperoxyacetal derivatives allowed the formation of functionalized 3,5-disubstituted 1,2-dioxolanes through the formation of reactive peroxycarbenium species under Lewis acid mediation. The introduction of a neutral nucleophile such as allylsilane, silane, or silyl enol ether was accomplished with moderate to good yields. The two studied Lewis acids, TiCl4 and SnCl4, gave
Synthesis and Reactions of 1-(Trimethylsilyl)allyl Chloride
作者:Nobujiro Shimizu、Fumihiro Shibata、Yuho Tsuno
DOI:10.1246/bcsj.57.3017
日期:1984.10
1-(Trimethylsilyl)allyl chloride prepared conveniently from 1,3-dichloropropene reacted smoothly with organocopper compounds yielding terminal alkenylsilanes, while its Grignard reactions with carbonyl compounds gave the corresponding alcohols with the regioselection depending sensitively on substrates.