发明名称 |
Preparation of olefinically unsaturated carboxylic esters having a terminal ester group |
摘要 |
Olefinically unsaturated carboxylic esters having a terminal ester group and of the general formulae Ia and Ib R1-CH2-CH=CH-(CH2)r-1-COOR2 (Ia) R1-CH=CH-(CH2)r-COOR2 (Ib) and, if desired, further double bond isomers, where R1 is hydrogen or an organic radical, R2 is C1-C8-alkyl and r is from 1 to 20, are prepared by a process in which an alpha -substituted alpha , omega -(n-alkylenedicarboxylic ester) of the general formula II <IMAGE> (II) where R1 and R2 and r have the abovementioned meanings and R3 is C1-C8-alkyl, is converted over an acidic heterogeneous catalyst at from 150 DEG to 800 DEG C. and under from 0.01 to 50 bar.
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申请公布号 |
US4999453(A) |
申请公布日期 |
1991.03.12 |
申请号 |
US19890337867 |
申请日期 |
1989.04.14 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
MERGER, FRANZ;HORLER, HANS;HOELDERICH, WOLFGANG;WITZEL, TOM |
分类号 |
B01J29/04;B01J29/40;B01J29/83;B01J29/85;B01J29/86;B01J29/88;C07B61/00;C07C67/32;C07C69/533 |
主分类号 |
B01J29/04 |
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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