The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 18, 2011
Filed:
May. 29, 2008
Applicant:
Uttam Saha, Ontario, CA;
Inventor:
Uttam Saha, Ontario, CA;
Assignee:
Cytochroma Inc., Markham, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07F 9/53 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process for producing a compound of the formula: including reacting of a compound of the formula: with diphenyl phosphine oxide using a binary phase reaction mixture including diphenyl phosphine oxide in an organic solvent, a basic aqueous solution, and a phase transfer catalyst, to obtain the compound of formula 1,wherein Ph is phenyl, Xand Xare both hydrogen or Xand Xtaken together are CH, Ris a protecting group, Ris fluorine, hydrogen, or OR, wherein Ris a protecting group, and the squiggly line represents a bond that results in the adjacent double bond being in either the E or Z configuration, is disclosed.