发明名称 |
UN PROCEDIMIENTO PARA PREPARAR NUEVOS ESTERES DE N,N'-DI-( BETA-HIDROXIETIL)-PIPERAZINA DE ACIDOS 1-NAFTIL-ACETICOS AL-FA-SUSTITUIDOS. |
摘要 |
<p>Title diesters of formula (I) (where B is -OC(O)CH (alpha-naphthyl)R; R is H or straight-chain 1-5C alkyl) and their mono- and di-acid addn. salts are prepd. by reacting N,N'-bis(2-hydroxyethyl)piperazine with a 1-naphthylalkanoic acid B-H. The reaction is pref. carried out by passing an inert gas through a molten mixt. of the reactants to remove water of reaction or by reacting in a high-boiling solvent which forms an azeotrope with water and removing water of reaction by azeotropic distillation.</p> |
申请公布号 |
ES369362(A2) |
申请公布日期 |
1971.06.01 |
申请号 |
ES19620003693 |
申请日期 |
1969.07.10 |
申请人 |
ISTITUTO DE ANGELI, S. P. A. |
发明人 |
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分类号 |
C07D295/088;(IPC1-7):07D/;61K/ |
主分类号 |
C07D295/088 |
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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