A Green and Facile Synthesis of Biopertinent Pyrazole-Decorated Nitriles and Acrylates under Catalyst-Free Conditions
作者:Chennan Ramalingan、Lakshmi Jayalakshmi、Kesavan Stalindurai、Ayyanar Karuppasamy、Ramar Sivaramakarthikeyan、Vellasamy Devadoss
DOI:10.1055/s-0034-1380742
日期:——
A green and efficient methodology has been developed for the construction of 2-[(1,3-diaryl-4-pyrazolyl)methylene]malononitriles, potent antioxidant molecules, in good to excellent yields in five minutes from 1,3-diarylpyrazole-4-carbaldehydes and malononitrile using PEG-400 and water at ambient temperature under catalyst-free conditions. The PEG-400 could be reused without appreciable loss in the yield. The methodology has been extended to the synthesis of a diverse range of homo/heteroaryl-based nitriles and acrylates, reflecting its versatility.