发明授权
US07081539B2 One-pot process for the preparation of 1,2-benzisoxazole-3-methanesulfonamide 失效
用于制备1,2-苯并异恶唑-3-甲磺酰胺的一锅法

One-pot process for the preparation of 1,2-benzisoxazole-3-methanesulfonamide
摘要:
A process for the preparation of 1,2-benzisoxazole-3-methanesulfonamide without isolation of intermediates in solid form, by using 4-hydroxycoumarin as a starting compound, and water and 1,2-dichloroethane as solvents; and an industrially useful process for the preparation of 1,2-benzisoxazole-3-acetic acid, by reacting 4-hydroxycoumarin and hydroxylamine in water.
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