Process for Production of Substituted Cyclopentanone
申请人:Shimizu Katsuya
公开号:US20090036692A1
公开(公告)日:2009-02-05
A substituted cyclopentanone represented by the following formula (2):
(wherein R
3
and R
4
represent a substituent having 1 to 8 carbon atoms, may be the same as R
1
and R
2
, respectively, and may be the same as each other) can be produced by hydrogenating the double bond in a compound represented by the following formula (1):
(wherein R
1
and R
2
represent a substituent having 1 to 8 carbon atoms) in the presence of a transition metal catalyst by using a carboxylic acid or a specific concentration of a carboxylic acid ester as a solvent. This process can produce a substituted cyclopentanone which is useful as a jasmine fragrance, an intermediate thereof or the like, in a simple and inexpensive manner at a high cis-isomer ratio.
Process for production of substituted cyclopentanone
申请人:Asahi Kasei Chemicals Corporation
公开号:US07897802B2
公开(公告)日:2011-03-01
A substituted cyclopentanone represented by the following formula (2):
(wherein R3 and R4 represent a substituent having 1 to 8 carbon atoms, may be the same as R1 and R2, respectively, and may be the same as each other) can be produced by hydrogenating the double bond in a compound represented by the following formula (1):
(wherein R1 and R2 represent a substituent having 1 to 8 carbon atoms) in the presence of a transition metal catalyst by using a carboxylic acid or a specific concentration of a carboxylic acid ester as a solvent. This process can produce a substituted cyclopentanone which is useful as a jasmine fragrance, an intermediate thereof or the like, in a simple and inexpensive manner at a high cis-isomer ratio.
PROCESS FOR PRODUCTION OF SUBSTITUTED CYCLOPENTANONE
申请人:Asahi Kasei Chemicals Corporation
公开号:EP1900720A1
公开(公告)日:2008-03-19
A substituted cyclopentanone represented by the following formula (2):
(wherein R3 and R4 represent a substituent having 1 to 8 carbon atoms, may be the same as R1 and R2, respectively, and may be the same as each other) can be produced by hydrogenating the double bond in a compound represented by the following formula (1):
(wherein R1 and R2 represent a substituent having 1 to 8 carbon atoms) in the presence of a transition metal catalyst by using a carboxylic acid or a specific concentration of a carboxylic acid ester as a solvent. This process can produce a substituted cyclopentanone which is useful as a jasmine fragrance, an intermediate thereof or the like, in a simple and inexpensive manner at a high cis-isomer ratio.