Nickel-catalyzed tandem coupling of allyl electrophiles, alkynes, and alkynyltins
作者:Dong-Mei Cui、Takao Tsuzuki、Kaori Miyake、Shin-ichi Ikeda、Yoshiro Sato
DOI:10.1016/s0040-4020(97)10207-1
日期:1998.2
The nickel-catalyzed intermolecular coupling of allyl acetate or allyl carbonate with alkynes and alkynyltins was carried out in the presence of LiCl to give 3,6-dien-1-yne regio- and stereoselectively. On the other hand, the intramolecular cyclization and coupling of ω-alkynyl electrophiles with alkynyltins gave five-membered cyclic products.
在LiCl的存在下,进行乙酸烯丙基乙酸酯或碳酸烯丙酯与炔烃和炔基锡的镍催化的分子间偶联,以选择性和立体选择性地得到3,6-二烯-1-炔。另一方面,ω-炔基亲电体与炔基锡的分子内环化和偶联得到五元环产物。