IMPROVED ONE-POT SYNTHESIS OF 3-SPIRO INDOLINES UNDER MICROWAVE IRRADIATION
作者:Anshu Dandia、Mitali Saha、Harshita Taneja
DOI:10.1080/10426509808035679
日期:1998.8.1
The potential of the domestic microwave oven has been utilized to accelerate the one-pot synthesis of spiro[indole-thiazolidine]diones and spiro[indole-benzothiazine]diones by condensation of substituted indole-2,3-diones (1) and appropriate anilines (2) with mercaptopropionic acid (4a/b) and o-mercaptobenzoic acid (5) in open borosilicate vessels, using ethanol as energy transfer medium. The reaction rate was 400-500 times faster than the reaction rate in the conventional way. Excellent isolated yields with easier workup than classical heating were the main advantages observed.
RAJOPADHYE, M.;POPP, F. D., J. HETEROCYCL. CHEM., 1984, 21, N 2, 289-291
作者:RAJOPADHYE, M.、POPP, F. D.
DOI:——
日期:——
RAJOPADHYE, MILIND;POPP, F. D., J. HETEROCYCL. CHEM., 24,(1987) N 6, 1637-1642