Ru-Catalyzed dehydrogenative synthesis of antimalarial arylidene oxindoles
作者:Girish Singh Bisht、Akanksha M. Pandey、Moreshwar B. Chaudhari、Sandip G. Agalave、Abhishek Kanyal、Krishanpal Karmodiya、Boopathy Gnanaprakasam
DOI:10.1039/c8ob01852a
日期:——
2-oxindoles using diaryl methanols in the absence of an acceptor. A wide array of symmetrical and unsymmetrical diaryl methanols undergoes dehydrogenative coupling with 2-oxindole selectively to generate various substituted 3-(diphenylmethylene)indolin-2-one derivatives in good yields and produces environmentally benign by-products, H2 and H2O. This methodology was successfully applied for the synthesis of
Palladium-Catalyzed C−H Functionalization of <i>N</i>-Arylpropiolamides with Aryliodonium Salts: Selective Synthesis of 3-(1-Arylmethylene)oxindoles
作者:Shi Tang、Peng Peng、Ping Zhong、Jin-Heng Li
DOI:10.1021/jo8008808
日期:2008.7.1
A selective and efficient method for the synthesis of 3-(1-arylmethylene)oxindoles by palladium-catalyzed C-H functionalization of anilides with aryliodonium salts has been developed. In the presence of Pd(OAc)(2) and Et3N, a variety of anilides underwent the reaction with aryliodonium salts to afford the corresponding 3-(1-arylmethylene)oxindoles in moderate to good yields. It is noteworthy that the reaction can be conducted providing moderate yields even without bases. The mechanism of the reaction was also discussed.