发明申请
US20070066830A1 METHOD FOR SULFONATION OF 1,2-BENZISOXAZOLE-3-ACETIC ACID 有权
1,2-苯并恶唑-3-乙酸的硫化方法

METHOD FOR SULFONATION OF 1,2-BENZISOXAZOLE-3-ACETIC ACID
摘要:
An efficient method for the preparation of 1,2-benzisoxazole-3-methanesulfonic acid involves a reaction of 1,2-benzisoxazole-3-acetic acid in toluene with chlorosulfonic acid optionally mixed with an inert solvent in the presence of a particular Lewis base (ester or a nitrile).
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