Diarylrhodates as Promising Active Catalysts for the Arylation of Vinyl Ethers with Grignard Reagents
作者:Takanori Iwasaki、Yoshinori Miyata、Ryo Akimoto、Yuuki Fujii、Hitoshi Kuniyasu、Nobuaki Kambe
DOI:10.1021/ja5043534
日期:2014.7.2
with 2 equiv of aryl Grignard reagents, were found to be effective active catalysts in cross-coupling reactions of vinyl ethers with aryl Grignard reagents, giving rise to the production of vinyl arenes. In this catalytic system, vinyl-O bonds were preferably cleaved over Ar-O or Ar-Br bonds. A lithium rhodate complex was isolated, and its crystal structure was determined by X-ray crystallography.
通过 [RhCl(cod)]2 与 2 当量的芳基格氏试剂反应生成的阴离子二芳基铑配合物被发现是乙烯基醚与芳基格氏试剂交叉偶联反应的有效活性催化剂,从而产生乙烯基芳烃. 在该催化系统中,乙烯基-O键优选在Ar-O或Ar-Br键上裂解。分离出一种铑酸锂络合物,并通过 X 射线晶体学确定其晶体结构。