PRODUCTION OF ROSE OXIDE - Takasago International Corporation

Title:

PRODUCTION OF ROSE OXIDE

Document Type and Number:

Japanese Patent JP3392600

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To obtain rose oxide having an odor quality rich in trans isomer by cyclizing an optically active S- or R-dimehyloctadienediol in the presence of an S- or R-isomer zero-valence Pd-optically active phosphine complex as a catalyst.
SOLUTION: An S or R-isomer of an optically active 3,7- dimethyl-5,7-octadien-1-ol of formula I or 3,7-dimethyl-5,6-octadien-1-ol of formula II is cyclized in the presence of a 0 (zero)-valent Pd-optically active phosphine complex to give a rose oxide with a trans-isomer ratio of ≥40% in a ≥70% yield.

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Inventors:

Hiroyuki Matsuda
Ken Yamamoto

Application Number:

JP25446295A

Publication Date:

March 31, 2003

Filing Date:

September 07, 1995

Export Citation:

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Assignee:

Takasago International Corporation

International Classes:

C07D309/04; A61K8/49; A61Q13/00; B01J31/24; C07B61/00; C11B9/00; (IPC1-7): C07D309/04; B01J31/24

Attorney, Agent or Firm:

Toshio Ebata

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