公开(公告)号：DE1293767B

公开(公告)日：1969-04-30

申请号：DEB0094184

申请日：1967-08-26

Applicant: BASF AG

Inventor： GRASSNER ,  HANS DR ,  HOLDER ,  WILLI DIPL-ING ,  NUERRENBACH ,  AXEL DR ,  REIF ,  WERNER DR ,  WUNSCH ,  GERD DR

IPC: C07F3/02

公开(公告)号：DE1286019B

公开(公告)日：1969-01-02

申请号：DEB0091039

申请日：1967-02-04

Applicant: BASF AG

Inventor： POMMER ,  HORST DR ,  REIF ,  WERNER DR ,  PASEDACH ,  HEINRICH DR ,  HOFFMANN

IPC: C07C45/67

公开(公告)号：DE1286018B

公开(公告)日：1969-01-02

申请号：DEB0091038

申请日：1967-02-04

Applicant: BASF AG

Inventor： POMMER ,  HORST DR ,  REIF ,  WERNER DR ,  PASEDACH ,  HEINRICH DR ,  HOFFMANN

IPC: C07C45/67 ,  C07C49/20 ,  C07C403/00

Abstract: Production of beta -ionone by reaction of 3,7-dimethylocten-(7)-yn-(1)-ol-(3) with a lower alkanol ester of acetoacetic acid at a temperature of from 100 DEG to 400 DEG C and treating the reaction mixture with an acid catalyst at a temperature of from 100 DEG to 400 DEG C and cyclizing the 6,10-dimethylundecatrien-(3,5,10)-one-(2) obtained by contacting with concentrated sulfuric acid at temperatures of from -30 to +20 DEG C.