with 2 equiv of aryl Grignardreagents, were found to be effective active catalysts in cross-coupling reactions of vinyl ethers with aryl Grignardreagents, 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 crystalstructure 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。
Palladium-Catalyzed α-Arylation of Silylenol Ethers in the Synthesis of Isoquinolines and Phenanthridines
A diverse array of isoquinolines and phenanthridines have been accessed by developing a two-step, one-pot method constituting regioselective palladium-catalyzed Kuwajima–Urabe α-arylation of silylenol ethers and acid-mediated deprotection, annulation, and aromatization. Structural diversity in the silylenol ethers leads to three different classes of isoquinolines and phenanthridines from which related