Acetic Acid → HCID 54723677, compound

Participants

Reaction Steps

A mixture of 7.0 g of p-nitrophenyl 4-(1-pyrrolidinyl)-2H-1-benzothiopyran-3-carboxylate 1,1-dioxide, 50 ml of glacial acetic acid, and 100 ml of 1N hydrochloric acid was heated on a steam bath for 20 min and diluted with ice-water. The resulting precipitate was collected and recrystallized from tetrahydrofuran-isopropyl ether to give 5.5 g of product, mp 206°-209° dec.

Provenance & Evidence