Malononitrile-activated synthesis and anti-cholinesterase activity of styrylquinoxalin-2(1<i>H</i>)-ones
作者:Sheena Mahajan、Nancy Slathia、Vijay K. Nuthakki、Sandip B. Bharate、Kamal K. Kapoor
DOI:10.1039/d0ra02816a
日期:——
Herein, we report a base-free malononitrile activated condensation of 3-methylquinoxaline-2(1H)-one (3MQ) 1 with aryl aldehydes 3a–3ad for synthesis of styrylquinoxalin-2(1H)-ones (SQs) 4a–4ad with excellent yields. In this reaction, malononitrile activates the aldehyde via Knoevenagel condensation towards reaction with 3MQ 1 and gets liberated during the course of reaction to yield the desired SQs