A Palladium-Catalyzed Method for the Preparation of Indoles via the Fischer Indole Synthesis
作者:Seble Wagaw、Bryant H. Yang、Stephen L. Buchwald
DOI:10.1021/ja992077x
日期:1999.11.1
benzophenone hydrazones are converted to indole products via an in situ hydrolysis/Fischer cyclization protocol. A procedure that extends this methodology to the synthesis of N-alkylindoles via the intermediacy of N-aryl-N-alkyl benzophenone hydrazones is described. Additionally, the Pd-catalyzed preparation of diaryl benzophenone hydrazones, followed by a hydrolysis/Fischer cyclization protocol, affords N-arylindole