Water → HCID 13154618, compound

Participants

Reaction Steps

3 g of 2,3-dihydro-3-hydroxymethyl-2-(p-tolyl)-1,5-benzothiazepin-4(5H)-one prepared as described in Reference Example 3 was dissolved in 15 ml of pyridine. 1.3 g of methanesulfonyl chloride was added to the solution and the mixture was stirred at room temperature for 2 hours. Water was added to the reaction mixture and the precipitated crystals were separated by filtration and recrystallized from dichloromethane-n-hexane to obtain 3.3 g of 2,3-dihydro-3-[(methylsulfonyloxy)methyl]-2-(p-tolyl)-1,5-benzothiazepin-4(5H)-one as colorless needles having a melting point of 207° C.

Provenance & Evidence