Enyne Chlorides: Substrates for Copper-Catalyzed Asymmetric Allylic Alkylation
作者:Hailing Li、Alexandre Alexakis
DOI:10.1002/anie.201107129
日期:2012.1.23
A select few: Several prochiral enynechlorides were employed as substrates in the title reaction using Grignard reagents as the alkylation reagents (see scheme; CuTC=copper(I) thiophenecarboxylate). Excellent 1,3 substitution regioselectivities and good to excellent enantioselectivities were obtained. The substrate scope is additionally extended to diene chlorides.
Selective Linear Codimerization of Terminal Acetylenes and 1,3-Butadienes Catalyzed by (η<sup>4</sup>-1,5-Cyclooctadiene)(η<sup>6</sup>-1,3,5-cyclooctatriene)ruthenium(0)–Trialkylphosphine
作者:Take-aki Mitsudo、Yoji Hori、Yoshihisa Watanabe
DOI:10.1246/bcsj.59.3201
日期:1986.10
of terminal acetylenes with 1,3-butadienes catalyzed by (η4-1,5-cyclooctadiene)(η6-1,3,5-cyclooctatriene)ruthenium [Ru0(COD)(COT)]–PR3 (R=ethyl, butyl, octyl) in various solvents at 80 °C afforded linear codimers in good to excellent yield with high chemo-, regio-, and stereoselectivities. Reactions of deuterated acetylenes were also examined.
(η4-1,5-环辛二烯)(η6-1,3,5-环辛三烯)钌[Ru0(COD)(COT)]-PR3(R=乙基,丁基、辛基)在各种溶剂中在 80 °C 下得到线性共二聚体,收率良好至极好,具有高化学选择性、区域选择性和立体选择性。还检测了氘代乙炔的反应。
Organocuprate-induced coupling of propargyl or enyne alcohols using (methylphenylamino)tributylphosphonium iodide. Regiocontrolled synthesis of allenes and conjugated enynes
作者:Yoshio Tanigawa、Shunichi Murahashi
DOI:10.1021/jo01310a066
日期:1980.10
The first selective linear codimerization of terminal acetylenes and 1,3-dienes catalyzed by dihydridotetrakis(trialkylphosphine)ruthenium complexes