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Title:
INDENE DERIVATIVE AND INTERMEDIATE THEREOF AND METHOD OF THEIR PRODUCTION
Document Type and Number:
Japanese Patent JP2003261513
Kind Code:
A
Abstract:

To provide a method for industrially producing an indene derivative useful as an intermediate for synthesizing vitamin D derivatives in relatively few steps, to provide intermediates of the indene derivative and a method for producing the intermediates.

The method for producing the indene derivative comprises the steps of reacting a cyclohexadienecarbonyl derivative of the general formula (I) with a trifluoromethanesulfonic acid derivative to form a triene derivative of the general formula (II), subjecting the triene derivative to a palladium catalyst to form an indanediene derivative of the general formula (III), and then reducing the indanediene derivative in the presence of a catalyst to obtain the objective indene derivative of the general formula (IV). In the above formulae, the respective signs are the same as defined in the Specification.


Inventors:
TAKAHASHI TAKASHI
Application Number:
JP2002000062652
Publication Date:
September 19, 2003
Filing Date:
March 07, 2002
Export Citation:
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Assignee:
KURARAY CO
International Classes:
C07C69/757; C07B61/00; C07C29/00; C07C29/17; C07C33/14; C07C41/18; C07C41/20; C07C43/162; C07C45/61; C07C45/62; C07C47/267; C07C67/30; C07C69/753; C07C303/26; C07C309/65; C07F7/08; (IPC1-7): C07C69/757; C07C29/00; C07C29/17; C07C33/14; C07C41/18; C07C41/20; C07C43/162; C07C45/61; C07C45/62; C07C47/267; C07C67/30; C07C69/753; C07C303/26; C07C309/65; C07F7/08
Attorney, Agent or Firm:
高島 一