Pyridine → HCID 22858125, compound

Participants

Reaction Steps

A mixture of 3a (1.79 g, 12.4 mmol), pyridine (5 mL), and p-toluenesulfonyl chloride (4.26 g, 22.3 mmol) in dichloromethane (40 mL) was stirred below 10° C. for 2 days. The reaction mixture was poured into copper (II) sulfate solution and extracted with diethyl ether. The combined organic layers were washed with copper (II) sulfate solution, water, sodium bicarbonate solution and brine, and dried over sodium sulfate. Filtration and concentration gave 6.27 g of an oily material, which was purified by column chromatography (silica gel 60 g, ethyl acetate in n-hexane, 5-33%) to give 3.74 g (quantitative) of 4a as a colorless oil.

Provenance & Evidence