US Patent 7671220 Processes for the 3,3-dialkylation of 4-chromanones
Patent 7671220 was granted and assigned to Wyeth on March, 2010 by the United States Patent and Trademark Office.
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Patent abstract
The present invention relates to methods for the preparation of 3,3-dialky 4-chromanones, and particularly to the preparation of 6-fluoro-3,3-dimethyl-2,3-dihydro-4H-chromen-4-one and 3,3-dimethyl-2,3-dihydro-4H-chromen-4-one. In some embodiments, the processes include reaction of a 4-chromanone compound with an alkyl halide in the presence of a metal alkoxide at low temperature.
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Patent Inventor Names
Ayako Yamashita0
Cilien S. Hanna0
Emily B. Norton0
Jaechul Shim0
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US Patent 07671220 Processes for the 3,3-dialkylation of 4-chromanones US Patent 7671220 Processes for the 3,3-dialkylation of 4-chromanones
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Patent Number
076712200
Patent Number
76712200
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Official Website
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Current Assignee
Patent Jurisdiction
Patent Number
076712200
Date of Patent
March 2, 2010
0Patent Application Number
113545310
Date Filed
February 15, 2006
0Official Website
Patent Primary Examiner
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US Patent 07671220 Processes for the 3,3-dialkylation of 4-chromanones
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07671220
Date of patent
March 2, 2010
Patent application number
11354531
Date Filed
February 15, 2006
Patent primary examiner
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