Studies on the reaction of 3-substituted-4-hydroxy-2H-1,2-benzothiazine 1,1-dioxides with aryl isocy

• 出 处: Chinese Journal of Chemistry
• 发表日期: 1996年05期
• 关键词: substituted elementary singlet acetyl corrected Petroleum dilute eating silica v

The reaction of 3-substituted-4-hydroxy-2H-1,2-benzothiazine 1,1-dioxides with aryl isocyanate under different equivalents of strong base NaH was studied.Seventeen of new derivatives were obtained whose structures were characterized by 1H NMR,IR,MS,elementary analysis and FeCl3 test.