发明名称 |
PROCESS FOR THE PRODUCTION OF ENOL ETHERS AND THEIR USE IN THE PREPARATION OF ALDEHYDES |
摘要 |
<p>Enol ethers of the general formula I <IMAGE> (I) are prepared by eliminating the radical R4OH from acetals or ketals of the formula II <IMAGE> (II) where the substituents R1 and R2 are each independently of the other hydrogen, C1-C12-alkyl, C3-C8cycloalkyl, C3-C8-cycloalkenyl, unsubstituted or C1-C4-alkyl-substituted aryl or C7-C16 aralkyl, R3 is -CR5(OR4)2, -COOR4 or -COR4, R4 is C1-C20-alkyl, C7-C20-alkylaryl or C7-C20-aralkyl, R5 is hydrogen or C1-C8-alkyl, in a process which comprises performing the reaction in the presence of phosphoric acid and/or phosphates on a carrier material and/or phosphates and/or zeolites as catalysts.</p> |
申请公布号 |
EP0337260(B1) |
申请公布日期 |
1992.12.02 |
申请号 |
EP19890105921 |
申请日期 |
1989.04.05 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
HOELDERICH, WOLFGANG, DR.;GOETZ, NORBERT, DR.;HUPFER, LEOPOLD, DR.;HIMMELE, WALTER, DR. |
分类号 |
C07C41/48;C07C45/49;C07C47/198;C07C67/327 |
主分类号 |
C07C41/48 |
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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