Allenyl-germanes and -stannanes, Ph3MC(R)CCR′R″ (M = Ge, Sn) can be obtained, generally in excellent yield, through alkylcopper(I)-induced 1,3-substitution of the propargylic chlorides Ph3MCCCR′R″Cl. In the tin series, however transmetallation is the main process when MeCu, H2CCHCu or PhCu are used. The allenyl compounds in which R is (trimethylsilyl)ethynyl or 4,4-dimethyl-1,2-pentadienyl can
通过烷基
铜(I)诱导的1,3-取代,可以以极好的收率获得烯丙基-
锗烷和-
锡烷,Ph 3 MC(R)CCR'R“(M = Ge,Sn)。炔
氯化物博士3 MCCCR'R“CL。在
锡系列,但是
金属转移的主要处理时M
ECU,H 2被用于CCHCu或PhCu。R为(三甲基甲
硅烷基)
乙炔基或4,4-二甲基-
1,2-戊二烯基的烯丙基化合物可通过使用
有机锌化合物代替
铜(I)化合物并使用四(
三苯基膦)
钯作为催化剂而获得。