Synthesis of 3-substituted 2,3-dihydropyrazino[1,2-a]indol-4(1H)-ones by sequential reactions of 2-indolylmethyl acetates with α-amino acids

Antonella Goggiamani,Antonio Arcadi,Alessia Ciogli,Martina De Angelis, Stefano Dessalvi,Giancarlo Fabrizi,Federica Iavarone,Antonia Iazzetti,Alessio Sferrazza, Roberta Zoppoli

RSC Advances（2023）

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摘要

The synthesis of 2,3-dihydropyrazino[1,2-a]indol-4(1H)-ones through the in situ generation of 2-methide-2H-indole intermediate I starting from 2-indolylmethyl acetates under basic conditions/nucleophilic Michael addition/cyclization cascade reaction.

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