Synthesis of polyfunctional indoles and related heterocycles mediated by cesium and potassium bases
摘要:
A general preparation of 2-substituted indoles starting from functionalized 2-alkynylanilines has been developed. This base mediated reaction has also been used to synthesize the heterocyclic core of the marine alkaloid hinckdentine A. Furthermore the reaction was successfully adapted to the solid phase. Benzofurans and isoindolones could also be prepared with this method. (C) 2003 Elsevier Science Ltd. All rights reserved.
Synthesis of polyfunctional indoles and related heterocycles mediated by cesium and potassium bases
作者:Christopher Koradin、Wolfgang Dohle、Alain L Rodriguez、Bertram Schmid、Paul Knochel
DOI:10.1016/s0040-4020(03)00073-5
日期:2003.2
A general preparation of 2-substituted indoles starting from functionalized 2-alkynylanilines has been developed. This base mediated reaction has also been used to synthesize the heterocyclic core of the marine alkaloid hinckdentine A. Furthermore the reaction was successfully adapted to the solid phase. Benzofurans and isoindolones could also be prepared with this method. (C) 2003 Elsevier Science Ltd. All rights reserved.
Revisiting the Gold-Catalyzed Dimerization of 2-Ethynylanilines: A Room-Temperature and Silver-Free Protocol for the Synthesis of Multifunctional Quinolines
作者:Chandrasekar Praveen、P. Perumal
DOI:10.1055/s-0035-1561305
日期:——
heterocyles also as exemplified by the preparation of naphthyridines. Competition reactions to determine the reactivity of dissimilar alkynes demonstrated that the product ratio of dimerization vsintermolecular addition is rather dependent on the electronic nature of aryl substituent on the alkynes. However, control experiments with substrates possessing internal alkynes resulted in cycloisomerization