【発明の名称】ケトン異性体混合物、その製造方法およびその組成物

Japanese Patent JPH0688926

B2

Described is an isomer-directed process for producing asymmetric ketones defined according to the generic structure:wherein one of Z, or Z₂ is the moiety:and the other of Z₁ or Z. is hydrogen; wherein R₁₁ and R₂₁ represent hydrogen or the same or different alkyl or alkenyl with the proviso that R₁₁ and R₂₁ are not both hydrogen or wherein R₁₁ and R₂₁ taken together:(i) complete a cycloalkyl, cycloalkenyl, bicycloalkyl, mono or polyalkyl cycloalkyl or mono or polyalkyl cycloalkenyl ring, or(ii) represent alkylidene, cycloalkenyl alkylidene, aralkylidene, mono or polyalkyl cycloalkenyl alkylidene or mono or polyalkyl aralkylidene; and wherein R., R₇ and R₈ are the same or different and each represents hydrogen or methyl, using a catalytic Claisen rearrangement of allylic ethers previously formed by reacting substituted or unsubstituted allylic alcohols defined according to the structure:with dialkyl ketals defined according to the structure:(Continuation next page) wherein R₄ and R₅ represent the same or different C₁-C₄ alkyl.Also described are compounds and processes for using same in perfumery defined according the structures:Also described are certain diallylic ethers defined according to the generic structure:

Mark A. Splecker
Robert Py. Belco
William L. Shriver
Michael litchiadero

JP5472485A

November 09, 1994

March 20, 1985

Click for automatic bibliography generation  

Internal Flavors and Fragrances Incorporated

A61K8/00; A61K8/35; A61Q13/00; C07C43/30; C07C43/305; C07C45/00; C07C45/51; C07C49/20; C07C49/203; C07C49/217; C07C49/557; C07C67/00; C07C401/00; C07C403/00; C07C403/14; C07C403/16; C11B9/00; (IPC1-7): C07C49/203; A61K7/46; C07C45/51; C07C49/557; C07C403/14; C11B9/00

Masao Miyake (1 person outside)

Next Patent: OPTICAL FIBER CABLE WITH GAS DAM