One-pot and three-component synthesis of spiro[chromeno[2,3-d] pyrimidine-5,3′-indoline]-diones and spiro[chromeno[2,3-c] pyrazole-4,3′-indoline]-diones
作者:Ramin Ghahremanzadeh、Fatemeh Fereshtehnejad、Zahra Yasaei、Tayebeh Amanpour、Ayoob Bazgir
DOI:10.1002/jhet.399
日期:——
Abstract
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A novel, clean, one‐pot and three‐component synthesis of new spiro[chromeno[2,3‐d]pyrimidine‐5,3′‐indoline]‐2′,6(7H)‐diones and spiro[chromeno[2,3‐c]pyrazole‐4,3′‐indoline]‐2′,5(6H)‐diones via cyclo‐condensation reaction of isatins, 1,3‐cyclohexadiones, and 2‐methylpyrimidine‐4,6‐diol or 3‐methyl‐1‐phenyl‐1H‐pyrazol‐5‐ol, in aqueous media is reported. J. Heterocyclic Chem., (2010).