发明名称 |
PROCESS FOR THE PREPARATION OF P-HYDROXYBENZYL NITRILES OR P-HYDROXYBENZYL AMINES |
摘要 |
A process is provided for the preparation of p-hydroxy-benzyl-nitriles starting from the corresponding p-hydroxy-benzaldehyde, first reducing the p-hydroxy-benzaldehyde to the p-hydroxy-benzyl amine, a primary amine, with hydrogen in the presence of aqueous ammonia, preferably with the addition of small amounts of lower alkyl alcohol; and Raney nickel catalyst at low pressure; and then converting the amine to the p-hydroxy-benzyl-nitrile by reaction with sodium cyanide at elevated temperature; the first stage, the reduction, is applicable also to o- and m-hydroxy benzaldehydes. |
申请公布号 |
DE3360256(D1) |
申请公布日期 |
1985.07.18 |
申请号 |
DE19833360256 |
申请日期 |
1983.03.14 |
申请人 |
RHONE-POULENC SPECIALITES CHIMIQUES |
发明人 |
FARBER, LEON;GRADEFF, PETER S. |
分类号 |
C07C255/53;(IPC1-7):C07C121/75;C07C91/28;C07C93/04;C07C120/00 |
主分类号 |
C07C255/53 |
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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