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:
May. 09, 2006
Filed:
Aug. 26, 2003
Applicants:
Vijay Kumar Handa, Hyderabad, IN;
Divvela Venkata Naga Srinivasa Rao, Hyderabad, IN;
Meenakshisunderam Sivakumaran, Hyderabad, IN;
Inventors:
Vijay Kumar Handa, Hyderabad, IN;
Divvela Venkata Naga Srinivasa Rao, Hyderabad, IN;
Meenakshisunderam Sivakumaran, Hyderabad, IN;
Assignee:
Aurobindo Pharma Ltd., Hyderabad, IN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 241/04 (2006.01); C07D 295/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention describes an industrially advantageous process to prepare highly pure 1-Methyl-3-phenylpiperazine of Formula Ithat makes use of a novel piperazine derivative, 4-Benzyl-1-methyl-2-oxo-3-phenylpiperazine, represented by Formula II1-Methyl-3-phenylpiperazine is a useful intermediate in the preparation of antidepressant Mirtazapine.