A process for preparing 2-aminosubstituted 1, 3 -benzothiazine- 4 -ones is provided which comprises the following step: Formula (I) wherein Y is halogen; R is independently selected from C1-6-alkyl which may optionally be substituted by halogen, -NO2, halogen, -CHO -COOR4 (wherein R4 is hydrogen or C1-6-alkyl) and -CN; R3 is C1-6-alkyl which may be substituted by halogen; X is halogen; and n is 0 or an integer of 1 to 4; if n is 2, 3 or 4, multiple Rs may be the same or different.
提供了一种制备2-
氨基取代的1,3-苯并
噻嗪-4-酮的方法,包括以下步骤:公式(I)其中Y是卤素;R独立地选自C1-6-烷基,该烷基可能被卤素、-
NO2、卤素、-CHO、-COOR4(其中R4是氢或C1-6-烷基)和-CN取代;R3是C1-6-烷基,可能被卤素取代;X是卤素;n为0或1至4的整数;如果n为2、3或4,多个R可能相同或不同。