Palladium‐Catalyzed Tail‐to‐Tail Reductive Dimerization of Terminal Alkynes to 2,3‐Dibranched Butadienes
作者:Hongyu Guo、Sheng Zhang、Yang Li、Xiaoqiang Yu、Xiujuan Feng、Yoshinori Yamamoto、Ming Bao
DOI:10.1002/anie.202116870
日期:2022.3.21
a combination of pivalic acid and para-toluenesulfonic acid proved successful in favoring the selective highly chemo- and regioselective tail-to-tail reductive dimerization of terminalalkynes over the competitive head-to-taildimerization pathway. The target reaction, proposed to proceed via a cationic alkenyl palladium intermediate, presents a facile and straightforward approach for accessing 2,3-dibranched
Facile synthesis of dibranched conjugated dienes via palladium-catalyzed oxidative coupling of N-tosylhydrazones
作者:Huanfeng Jiang、Li He、Xianwei Li、Huoji Chen、Wanqing Wu、Wei Fu
DOI:10.1039/c3cc43593h
日期:——
developed. This process features readily available starting materials and mild reaction conditions. Further transformations of the obtained dibranched 1,3-dienes, through Diels-Alder reactions and indene synthesis, are also demonstrated, which reveal their great potential for synthetic utility.