This article reports the synthesis of some 2,4-dienoic ester insect juvenilehormoneanalogs with a cyclohexene, pinene, or methoxycyclohexane ring in the terminal position.
Unsymmetrical Unsaturated Ketones from Lactones and Carboxylic Acids in One Step
作者:Wolfgang Giersch、Ferdinand Naef
DOI:10.1002/hlca.200490154
日期:2004.7
A one-step transformation of γ- and δ-(spiro)lactones into γ,δ- and δ,ε-unsaturated ketones in the presence of carboxylicacids in the vapor phase at 400° over a supported manganese catalyst is reported for the first time. The scope of this new transformation is exemplified with a series of lactones, and a mechanistic rationale is proposed.
[EN] PROCESS FOR THE DIRECT CONVERSION OF LACTONES INTO UNSATURATED KETONES OR ALDEHYDES<br/>[FR] PROCEDE DE CONVERSION DIRECTE DE LACTONES EN CETONES OU ALDEHYDES INSATURES
申请人:FIRMENICH & CIE
公开号:WO2004089861A1
公开(公告)日:2004-10-21
The present invention refers to a process for the preparation of unsaturated ketones or aldehydes by pyrolysis of a lactone, in the presence of a reducing agent such as molecular hydrogen or a carboxylic acid, and in the presence of a catalyst, optionally supported, comprising at least one metal selected from the group consisting of Y, Ti, Cd, Mn, Zn, Sc and Zr.
Process for the direct conversion of lactones into unsaturated ketones or aldehydes
申请人:Naef Ferdinand
公开号:US20060036116A1
公开(公告)日:2006-02-16
The present invention refers to a process for the preparation of unsaturated ketones or aldehydes by pyrolysis of a lactone, in the presence of a reducing agent such as molecular hydrogen or a carboxylic acid, and in the presence of a catalyst, optionally supported, comprising at least one metal selected from the group consisting of Y, Ti, Cd, Mn, Zn, Sc and Zr.
Cyclohexenyl Butenones and Fragrance Compositions Comprising Them
申请人:Granier Thierry
公开号:US20100016197A1
公开(公告)日:2010-01-21
The present invention relates to substituted cyclohexenyl butenones of the formula
wherein R
1
, R
2
, R
3
, R
4
and R
5
are independently selected from hydrogen, methyl or ethyl; and the total sum of carbon atoms is 11 to 15; as well as to a method for their production and to fragrance compositions and fragrance applications comprising them.