使用Ni或Fe催化剂成功地实现了S N 2-选择性格利雅(Grignard)与伯烯丙基二苯基磷酸酯的偶联。与之形成鲜明对比的是,催化量的CuCN·2LiCl促进了S N 2'-选择性偶联反应。在铜催化剂的存在下,立体化学均一的γ-二取代的烯丙基格氏试剂在较少取代的烯丙基末端(α-位)与烯丙基磷酸二苯酯选择性地反应,而不会失去双键的几何形状。
Copper complexes generated in situ from CuCl2, alkylGrignardreagents, and 1,3‐dienes play important roles as catalytic active species for the 1,2‐hydroalkylation of 1,3‐dienes by alkylfluorides through CF bond cleavage. The alkyl group is introduced to an internal carbon atom of the 1,3‐diene regioselectively, thus giving rise to the branched terminal alkene product.
Action d'organomagnesiens sur des sulfures et des sels de sulfonium allyliques catalysee par des sels cuivreux
作者:Y. Gendreau、J.F. Normant、J. Villieras
DOI:10.1016/s0022-328x(00)91810-2
日期:1977.12
Grignard reagents react with allylsulphides, in the presence of catalytic amounts of copper(I) salts, giving alkenes. The corresponding sulphonium salts react more rapidly. Allyic rearrangement cannot be completely avoided.
Commercon-Bourgain,M. et al., Comptes Rendus des Seances de l'Academie des Sciences, Serie C: Sciences Chimiques, 1977, vol. 285, p. 211 - 212
作者:Commercon-Bourgain,M. et al.
DOI:——
日期:——
Copper catalyzed magnesium-Barbier reaction for γ-selective alkyl–allyl coupling
作者:Ender Erdik、Melike Koçoğlu
DOI:10.1016/j.tetlet.2007.04.060
日期:2007.6
CuCN catalyzed alkyl-allyl coupling under magnesium-Barbier conditions occurs regioselectively and affords predominantly the gamma-products in good to high yields. This one-pot CuCN catalyzed reaction utilising Mg, an alkyl halide and an allylic substrate in THF at room temperature provides an easy alternative to the classical CuCN catalyzed gamma-allylation of alkyl Grignard reagents. (c) 2007 Elsevier Ltd. All rights reserved.
An efficient method for conversion of 1-alken-3-yl carbonates to 1-alkenes and 3-chloro-1-alkenes via allyltitaniums
作者:Shin-ichiro Matsuda、Duk Keun An、Sentaro Okamoto、Fumie Sato
DOI:10.1016/s0040-4039(98)01633-5
日期:1998.10
Hydrolysis and halogenolysis of the allyltitaniums derived from allylic carbonates and a Ti(O-i-Pr)(4) / 2 i-PrMgCl reagent proceed with high regio- and stereoselectivity, thus providing an efficient method for converting 1-alken-3-yl carbonates to l-alkenes or 3-chloro-1-alkenes. (C) 1998 Elsevier Science Ltd. All rights reserved.