Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-09-12
2006-09-12
Tucker, Zachary C. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C548S122000
Reexamination Certificate
active
07105660
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.
REFERENCES:
Espino et al, “Synthesis of 1,3-Difunctionalized Amine Derivatives through Selective C—H Bond Oxidation” Journal of the American Chemical Society, vol. 123, pp. 6935-6936 (2001).
Aoyama et al, “Catalytic Reactions of Metalloporphyrins. 3. Catalytic Modification of Hydroboration-Oxidation of Olefin with Rhodium(III) Porphyrin as Catalyst” Journal of Organic Chemistry, vol. 52, pp. 2555-2559 (1987).
Che Chi-Ming
Liang Jiang-Lin
Dickstein , Shapiro, LLP.
Tucker Zachary C.
University of Hong Kong
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