Improved process for preparing chlorine - 7 - 2 - methyl - 3 - 3 - dihydro - 2H, 9h isoxazole (3,2-b) - 9 - (1,3) benzoxazin ona

摘要

The compound 7-chloro-2-methyl-3,3a-dihydro-2H,9H-isoxazolo(3,2-b)(1,3)-benzoxazin- 9-one is produced by reacting a mixture of tetrahydrofuran and crotonaldehyde with 5-chlorosalicylhydroxamic acid. The compound has demonstrated utility as a uricosuric agent.