发明名称 |
PROCESS FOR PRODUCING DIKEGULAC, ITS SALTS AND DERIVATIVES |
摘要 |
Dikegulac, its salts and related derivatives are prepared by reacting 2-Keto-L-gulonic acid with 2,2 dimethoxypropane at an elevated temperature in the presence of a catalytic amount of a strong acid. This produces a reaction intermediate which is then reacted with a base to complete hydrolysis and produce an acid salt of dikegulac. Simple concentration and phase separation techniques are used to provide a more efficient, environmentally friendly and cost effective process.
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申请公布号 |
WO0162762(A1) |
申请公布日期 |
2001.08.30 |
申请号 |
WO2001US05748 |
申请日期 |
2001.02.23 |
申请人 |
PTRL EAST, INC. |
发明人 |
LAWRENCE, LOWELL, J.;KWIATKOWSKI, STEFAN |
分类号 |
C07D493/14;(IPC1-7):C07D493/14 |
主分类号 |
C07D493/14 |
代理机构 |
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主权项 |
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地址 |
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