作者:Haruka Yamaguchi、Fumiya Takahashi、Takashi Kurogi、Hideki Yorimitsu
DOI:10.1002/asia.202400384
日期:——
Arylacetylenes undergo anti-1,2-dizincation to afford trans-1,2-dizincioalkenes. The process employs sodium dispersion as a reducing agent and zinc chloride TMEDA complex as a reduction-resistant zinc electrophile. This reductive anti-dizincation contrasts with the conventional additive syn-dimetalation like silylzincation. The resulting dizincated alkenes undergo the cross-coupling to yield multi-substituted
芳基乙炔经过反-1,2-二锌化得到反式-1,2-二锌烯。该方法采用钠分散体作为还原剂,使用氯化锌 TMEDA 络合物作为抗还原锌亲电子试剂。这种还原性抗双金属化与传统的添加剂顺二金属化如甲硅烷基锌化形成对比。所得的双锌化烯烃经历交叉偶联,立体选择性地产生多取代的烯烃。