One-pot synthesis of quinolin-2-(1 H )-ones via tandem Ugi–Knoevenagel condensations
摘要:
A new application of the Ugi reaction in the synthesis of heterocyclic compounds is described. Substituted quinolin-2- (1H)-ones are formed in one-pot sequential Ugi four-component condensation and intramolecular Knoevenagel cyclization between o-acylanilines. aldehydes. malonic or tosylacetic acids and cyclohexyl isocyanide. (C) 2004 Elsevier Ltd. All rights reserved.
A new application of the Ugi reaction in the synthesis of heterocyclic compounds is described. Substituted quinolin-2- (1H)-ones are formed in one-pot sequential Ugi four-component condensation and intramolecular Knoevenagel cyclization between o-acylanilines. aldehydes. malonic or tosylacetic acids and cyclohexyl isocyanide. (C) 2004 Elsevier Ltd. All rights reserved.