作者:Yoshiaki Nakao、Eiji Shirakawa、Teruhisa Tsuchimoto、Tamejiro Hiyama
DOI:10.1016/j.jorganchem.2004.07.037
日期:2004.11
Carbostannylation of 1,2-dienes using acyl- and alkynylstannanes was achieved by means of nickel catalysis. In particular, acylstannylation of 1,2-dienes could be carried out with bis(1,5-cyclooctadiene)nickel [Ni(cod)2] and acylstannanes to give selectively α-acylmethyl(vinyl)stannanes. The reaction was also applicable to acylstannanes prepared in situ by protonolysis of α-alkoxyalkenylstannanes or
通过镍催化实现了使用酰基和炔基锡烷的1,2-二烯的羰基锡烷基化反应。特别地,可以用双(1,5-环辛二烯)镍[Ni(cod)2 ]和酰基锡烷进行1,2-二烯的酰基锡烷基化,以选择性地产生α-酰基甲基(乙烯基)锡烷。该反应也适用于通过α-烷氧基链烯基苯乙烯的质子分解或通过α-甲硅烷氧基乙烯基锡烷与醛缩醛反应原位制备的酰基锡烷。对于炔基甲氧基化,发现Ni(cod)2和1,3-双(二苯基膦基)丙烷(dppp)的组合可有效提供α-炔基甲基(乙烯基)锡烷,而Ni(cod)2 -1.3-双(二甲基膦基)丙烷(dmpp)催化剂切换区域选择性得到(Z)-α-炔基甲基(烯基)锡烷。通过交叉偶联和NaH催化异构化的结合,酰基甲磺酰化产物成功地转化为各种共轭或非共轭烯酮。通过交叉或均偶联反应将炔基甲氧基化产物转化为各种烯炔或2,3-双(炔基甲基)-1,3-二烯,这是各种取代的多环化合物的多用途前体。