US Patent 7105660 Intramolecular amidation of sulfamates catalyzed by metalloporphyrins

Patent 7105660 was granted and assigned to University of Hong Kong on September, 2006 by the United States Patent and Trademark Office.

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Patent

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Current Assignee

University of Hong Kong

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

71056600

Patent Inventor Names

Jiang-Lin Liang0

Chi-Ming Che0

Date of Patent

September 12, 2006

Patent Application Number

107908100

Date Filed

March 3, 2004

Patent Primary Examiner

‌

Zachary C. Tucker

Patent abstract

An intramolecular amidation processes for substrates such as sulfamates using chiral and non-chiral metalloporphyrin complexes which can maximize catalytic activity, enhance efficiency, stereoselectivity and speed of amidation reactions is described. The chiral metalloporphyrin catalyzed amidation of sulfamates exhibits excellent cis-selectivity, affording cyclic sulfamidates with high enantiomeric excess values.

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