发明名称 |
Process for the preparation of 2,4-dihydroxybenzophenones |
摘要 |
2,4-Dihydroxybenzophenone is prepared substantially quantitatively and in a highly purified form by reacting resorcinol with a benzotrihalide in the presence of an aqueous solution of N-methylpyrrolidone and subsequently subjecting the crude reaction product mixture to vacuum distillation.
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申请公布号 |
US4568429(A) |
申请公布日期 |
1986.02.04 |
申请号 |
US19840585713 |
申请日期 |
1984.03.02 |
申请人 |
GAF CORPORATION |
发明人 |
LIU, KOU-CHANG |
分类号 |
C07C49/83;C07B61/00;C07C45/00;C07C45/43;C07C45/82;C07C67/00;(IPC1-7):B01D3/10 |
主分类号 |
C07C49/83 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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