反应详情

To sodium chloride (60% wt. suspension in mineral oil, 108 mg) in dry DMF (5 ml) was added 1,3-thiazole-2-thiol (315 mg) at 0° C. After 30 minutes added 4-methanesulfonyl-piperidine-carboxylic acid tert-butyl ester (500 mg) as a solution in DMF (2 ml) and the reaction mixture was warmed up to room temperature overnight, then heated at 50° C. for 3 hours. Aqueous work-up and purification on silica yielded 4-(thiazol-2-ylsulfanyl)-piperidine-1-carboxylic acid tert-butyl ester (174 mg).

1. temperatureheated at 50° C. for 3 hours
2. customAqueous work-up and purification on silica