公开(公告)号：JPH1045659A

公开(公告)日：1998-02-17

申请号：JP11733997

申请日：1997-05-08

Applicant: BASF AG

Inventor： TELES JOAYUIM HENRIQUE DR ,  HOFFMANN WERNER DR

IPC: C07C43/303 ,  C07C45/51 ,  C07C45/62 ,  C07C45/74 ,  C07C47/21 ,  C07C49/04 ,  C07C49/203

Abstract: PROBLEM TO BE SOLVED: To provide a method for producing hexahydrofarnesyl acetone, enabling to obtain the compound from inexpensive and safe reaction components in short processes by reacting a specific geraniol compound with an alkoxy compound, heating the reaction product under the release of an alkanol, condensing the product with acetone, and subsequently reducing the condensation product. SOLUTION: This method comprises reacting (B) 6,7-dihydrogeraniol of formula I with (C) (C1 ) a compound of formula II (R is a 1-4C alkyl such as methyl) or (C2 ) a compound of formula III in the presence of (A) an acidic catalyst such as fulfuric acid or p-toluenesulfonic acid at a temperature of 50-120 deg.C, especially 80-110 deg.C, heating the obtained compound of formula IV in the presence of the component A under the release of a compound of the formula: ROH at 120-250 deg.C, especially 125-170 deg.C, condensing the obtained 10,11-dihydro-farnesal of formula V with acetone by a Claisen Schmidt reaction, and subsequehtly catalytically reducing the obtained 13,14-dihydro-3,4-dehydro-farnesyl acetone.

公开(公告)号：DE19619013A1

公开(公告)日：1997-11-13

申请号：DE19619013

申请日：1996-05-10

Applicant: BASF AG

Inventor： TELES JOAYUIM HENRIQUE DR ,  HOFFMANN WERNER DR

IPC: C07C43/303 ,  C07C45/51 ,  C07C45/62 ,  C07C45/74 ,  C07C47/21 ,  C07C49/04 ,  C07C49/203 ,  C07C67/00 ,  C07C69/533