A facile method for the preparation of functionalized 2,3-disubstituted-1,3-butadienes
摘要:
Functionalized 2,3-disubstituted-1,3-butadienes were readily prepared by reacting functionalized organozinc compounds with 1,4-dichloro-2-butyne or 1,4-ditosyloxy-2-butyne mediated by Cu(I) salts.
2,3-Dialkyl-1,3-butadienes were selectively synthesized by the copper(I) iodide-catalyzed reaction of 1,4-bis-[diethoxyphosphinyloxy]-2-butyne with alkyl Grignard reagents.
The synthesis of cyclic allylborates was achieved by the reaction of 1,3-dienes and B2pin2 using a copper catalyst. The cyclic allylborate could be used in several organic transformations such as regioselective protonation, the allylation of electrophiles, and Suzuki–Miyaura coupling.
环状烯丙基硼酸盐的合成是通过 1,3-二烯和 B 2 pin 2使用铜催化剂反应来实现的。环状烯丙基硼酸盐可用于多种有机转化,例如区域选择性质子化、亲电试剂的烯丙基化和 Suzuki-Miyaura 偶联。
ARAKI, SHUKI;OHMURA, MASAYUKI;BUTSUGAN, YASUO, SYNTHESIS, BRD, 1985, N 10, 963-964