发明名称 |
Process for preparing glyoxylic acid esters |
摘要 |
<p>The invention relates to a method for producing glyoxylic acid esters from glyoxylic acid ester hemiacetals which a) are directly transesterified with an alcohol in the presence of a catalyst; or b) are firstly converted into the corresponding glyoxylic acid whole acetals and are then transesterified with an alcohol in the presence of a catalyst, whereupon after a) and b) the acetals are divided into the desired, free glyoxylic acid ester or the hydrate thereof.</p> |
申请公布号 |
CZ20012374(A3) |
申请公布日期 |
2001.09.12 |
申请号 |
CZ20010002374 |
申请日期 |
1999.12.06 |
申请人 |
DSM FINE CHEMICALS AUSTRIA MFG. GMBH & CO KG |
发明人 |
ZIMMERMANN CURT;SAJTOS ALEXANDER |
分类号 |
C07C67/327;C07B53/00;C07B61/00;C07C67/03;C07C67/31;C07C67/313;C07C69/716;(IPC1-7):C07C67/313;C07C69/675;C07C69/708;C07C67/10;C07C69/013 |
主分类号 |
C07C67/327 |
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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