发明名称 |
Process for the preparation of omega-benzyl ester of amino diacids and its alcanesulfonates and the alcanesulfonates itself |
摘要 |
<p>Production of amino-diacid omega-benzyl esters (I) comprises reacting amino-diacid (II) with substituted benzyl alcohol (III) in presence of an at least equimolar amount (based on (II)) of an alkanesulfonic acid (IV). Production of amino-diacid alpha-benzyl esters (I) involves reacting amino-diacid (II) with benzyl alcohol substituted by 1-3 R1 (III), in presence of an at least equimolar amount (based on (II)) of an alkanesulfonic acid (IV) and optionally a solvent. R1 = H, 1-4C alkyl, 1-4C alkoxy or halo. An Independent claim is included for salts (V) of (I) with (IV) as new.</p> |
申请公布号 |
EP1439166(A1) |
申请公布日期 |
2004.07.21 |
申请号 |
EP20030293080 |
申请日期 |
2003.12.10 |
申请人 |
ISOCHEM |
发明人 |
VITRANT, ANNE MARIE;FERRUCCIO, LAURENCE;VINCENT, CHARLES-HENRY |
分类号 |
C07C227/18;C07C227/42;C07C229/24;(IPC1-7):C07C227/18 |
主分类号 |
C07C227/18 |
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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