Synthesis of novel 3- and 5-substituted indole-2-carboxamides
作者:Larry D. Bratton、Bruce D. Roth、Bharat K. Trivedi、Paul C. Unangst
DOI:10.1002/jhet.5570370513
日期:2000.9
elaborated to the 3-benzhydryl ester, N-substitutedester, and carboxylic acid intermedi ates, followed by conversion to the amide and then reduction of the 5-nitro group to the amine. Indole-2-carboxamides with 3-benzyl and 3-phenyl substituents were prepared in four steps from either a 3-bromo indole ester using the Suzuki reaction or from a 3-keto substituted indole ester. N-Alkylation of ethyl indole-2-carboxylate