Studies on 3-substituted 1,2-benzisoxazole derivatives. VII. Catalytic reduction of 3-sulfamoylmethyl-1,2-benzisoxazole and reactions of the resulting products.
作者:HITOSHI UNO、MIKIO KUROKAWA
DOI:10.1248/cpb.30.333
日期:——
Hydrogenation of 3-sulfamoylmethyl-1, 2-benzisoxazole (1) gave ω-sulfamoyl-2-hydroxyacetophenone (3) and its imide (2). Treatment of 3 with acid afforded a new route to 1, 2-benzoxathiin-4 (3H)-one-2, 2-dioxide (5). The oxime of 3 (4) was recyclized to provide 1, 2-benzisoxazole derivatives by treatment with acid or base. On pyrolysis 4 gave benzoxazole derivatives.
对3-磺酰基甲基-1,2-苯异噁唑 (1) 进行加氢反应生成ω-磺酰基-2-羟基苯乙酮 (3) 及其酰亚胺 (2)。用酸处理3生成了一条新路径通向1,2-苯并硫氮烯-4 (3H)-酮-2,2-二氧化物 (5)。3的氧肟 (4) 经酸或碱处理后可重环化为1,2-苯异噁唑衍生物。在热解过程中,4生成苯并噁唑衍生物。