反应详情

The product from (e) (2 g) was heated with pyridine hydrochloride (20 g) at 170°-180° C. for 6 hours. The mixture was cooled, diluted with dilute hydrochloric acid, and extracted with ether. The ether extracts gave an oily solid which was purified by preparative thin layer chromatography using silica as the adsorbent and 6% ethanol-chloroform as the solvent.

1. temperatureThe mixture was cooled
2. extractionextracted with ether
3. customThe ether extracts gave an oily solid which
4. customwas purified by preparative thin layer chromatography