An efficient one-pot synthesis of dispiropyrrolidine derivatives through 1,3-dipolar cycloaddition reactions under ultrasound irradiation
作者:Hai Liu、Yi Zou、Yu Hu、Da-Qing Shi
DOI:10.1002/jhet.654
日期:2011.7
A series of dispiropyrrolidinederivatives were synthesized via the three‐component 1,3‐dipolar cycloadditionreaction of isatin, sarcosine and 5‐arylidene‐1,3‐thiazolidine‐2,4‐dione or 5‐arylidene‐4‐thioxo‐1,3‐thiazolidine‐2‐one in ethanol underultrasoundirradiation. This protocol has the advantages of mild reaction conditions, higher yields, and shorter reaction time. J. Heterocyclic Chem., (2011)