US Patent 7119234 Process for the preparation of 1-(4-chlorophenyl)-4,4-dimethylpent-1-ene-3-one

Patent 7119234 was granted and assigned to Bayer CropScience Limited on October, 2006 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Bayer CropScience Limited

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

71192340

Patent Inventor Names

Joe J. Hanson0

Shekhar V. Kulkarni0

Date of Patent

October 10, 2006

Patent Application Number

109936390

Date Filed

November 19, 2004

Patent Primary Examiner

‌

Sikarl A. Witherspoon

Patent abstract

The present invention relates to a method for the preparation of as 1-(4-Chlorophenyl)-4,4-dimethylpent-1-ene-3-one, also known as Phenyl aldol. The process of the present invention utilizes catalysts. The process enables the manufacture of the Phenyl aldol in the absence of a solvent and without crystalization or filtration steps. Yields in the range of about greater than 95% with purities in the range of about greater than 95% have been obtained with the present invention.

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