With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.69778-83-2,4-Methoxy-1H-pyrrol-2(5H)-one,as a common compound, the synthetic route is as follows.,69778-83-2
A. A solution of 6-cyano-3,4-dihydro-2,2-dimethyl-3,4-epoxy-2H-1-benzopyran (15 g) and 4-methoxy-3-pyrrolin-2-one (8.5 g) in dimethylsufoxide (40 ml) was stirred and sodium hydride (80percent dispersion in oil, 2.2 g) was added. The mixture was stirred at room temperature for 5 hours. Water (50 ml) was slowly added, and the resulting solution extracted with ethyl acetate (2*50 ml). After drying the organic layer with sodium sulfate the solvent was removed under reduced pressure and the residual oil chromatographed on silica gel (4percent methanol in methylene chloride). The product obtained was dissolved in diethylether and precipitated with pentane to afford 4 g of 6-cyano-3,4-dihydro-2,2-dimethyl-trans-3-hydroxy-4-(4-methoxy-2-oxo-3-pyrrolin-1-yl)-2H-1-benzopyran, m.p. 256¡ã C.
69778-83-2 4-Methoxy-1H-pyrrol-2(5H)-one 574769, apyrrolines compound, is more and more widely used in various fields.
Reference£º
Patent; Researche Syntex France, S.A.; US4997846; (1991); A;,
Pyrroline – Wikipedia
1-Pyrroline | C4H7N – PubChem