发明名称 |
PROCESS FOR THE PREPARATION OF 3-ARYL ISOBUTANOLS |
摘要 |
Process for the preparation of 3-aryl-isobutanols of the general formula I …<IMAGE>… in which… R<1> and R<2> are hydrogen or an alkyl or cycloalkyl radical with up to 8 C atoms, preferably an alkyl radical with 1 to 4 C atoms,… which is characterised in that arylcarbinols of the general formula II …<IMAGE>… are reacted with n-propanol in the presence of catalytic amounts of an alkali metal hydroxide or alkali metal oxide at 250 to 350 DEG C in a closed reaction vessel. …<??>The process is particularly important for preparing 3-aryl-isobutanols of the formula I in which R<1> is an alkyl radical with 1 to 4 C atoms and R<2> is hydrogen. The p-methyl-, p-isopropyl- and p-tert.-butylphenylisobutanols obtained in this way in very high selectivity are valuable precursors for the fragrances jasmorange, cyclamenaldehyde and Lysmeral< TM > (Lilial< TM >) which are in high demand. |
申请公布号 |
EP0358088(A3) |
申请公布日期 |
1990.05.23 |
申请号 |
EP19890115892 |
申请日期 |
1989.08.29 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
BOTT, KASPAR, DR.;HOFFMANN, HERWIG, DR.;SCHEIDMEIR, WALTER, DR. |
分类号 |
B01J23/04;B01J31/02;C07B61/00;C07C29/34;C07C29/44;C07C33/20;C07C33/34 |
主分类号 |
B01J23/04 |
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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