Copper Catalyzed Intramolecular N-Arylation of Ketene Aminals at Room Temperature: Synthesis of 2-Amino-3-cyanoindoles
作者:Annaram Thirupathi、Manojkumar Janni、Saravanan Peruncheralathan
DOI:10.1021/acs.joc.8b00816
日期:2018.8.3
Various 2-amino-3-cyanoindoles are synthesized through copper catalyzed intramolecular N-arylations of ketene aminals at room temperature for the first time with 60–99% yields within 0.1–2 h. Controlled regioselective N-arylations of unsymmetrical ketene aminals are also studied. Further, a new double heteroannulation approach is demonstrated for the synthesis of 11-aminoindolo[2,3-b]quinolines from
在室温下首次通过铜催化乙烯酮缩醛的分子内N-芳基化反应合成了各种2-氨基-3-氰基吲哚,其收率在0.1-2 h内达到60-99%。还研究了不对称乙烯酮缩醛的可控区域选择性N-芳基化。此外,从非环和非杂环的前体合成11-氨基吲哚并[2,3- b ]喹啉的新的双异环的方法被证明。