发明名称 |
PROCEDIMIENTO DE PREPARACION DE FENILPIRUVATO DE SODIO CRISTALIZADO MONOHIDRATADO |
摘要 |
<p>The invention concerns a process for preparation of crystallized monohydrated sodium phenylpyruvate comprising: hot reacting benzaldehyde in an aqueous medium in the presence of a catalytic quantity of ethanolamine with the stoichiometric quantity of hydantoin, then treating the reactional medium hot at pH=14 through an excess of sodium hydroxide, acidifying to pH=9 with concentrated hydrochloric acid the so obtained solution and separating the formed precipitate.</p> |
申请公布号 |
ES534381(D0) |
申请公布日期 |
1985.04.16 |
申请号 |
ES19810005343 |
申请日期 |
1984.07.17 |
申请人 |
SOCIETE FRANCAISE HOECHST |
发明人 |
|
分类号 |
C07C59/84;B01J31/00;B01J31/02;C07B61/00;C07C51/00;C07C51/41;C07C67/00;(IPC1-7):C07C59/84;C07C101/08 |
主分类号 |
C07C59/84 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|