Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-04-12
2005-04-12
Tsang, Cecilia J. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C502S162000
Reexamination Certificate
active
06878835
ABSTRACT:
A complex catalyst for asymmetric epoxidation of enones, containing an optically active binaphthol, lanthanum triisopropoxide, triphenylphosphine oxide substituted with electron withdrawing groups in the parapositions of the phenyl groups, and cumene hydroperoxide or tert-butyl hydroperoxide.
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Bougauchi et al, “Catalytic asymmetric epoxidation of alpha, beta-unsaturated ketones promoted by lanthanoid complexes”, Journal of American Chemical Society, vol. 119, No. 9, Mar. 5, 1997, pp. 2329-2330, XP002170251.
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Inanaga Junji
Kagawa Takumi
Covington Raymond
Nixon & Vanderhye P.C.
Tosoh Corporation
Tsang Cecilia J.
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