Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2007-01-16
2007-01-16
Saeed, Kamal A. (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C548S237000
Reexamination Certificate
active
10704576
ABSTRACT:
A polymer-carrying optically active binaphthyl type oxazoline compound having axial asymmetry, represented by the following general formula (1)(wherein R1and R2may be the same or different from each other and each represents a hydrogen atom, an alkyl group having from 1 to 6 carbon atoms or the like; R3is a hydrogen atom or —R5—X—R6; R4is a hydrogen atom or the like; R5is a straight- or branched-chain aliphatic hydrocarbon chain which may have a directly or indirectly bonded substituent; X is CH2, CO2, O, CONR7or NR7; R6is a directly or indirectly bonded polymer; and R7is a hydrogen atom or the like), and to a transition metal complex which uses the compound as the ligand.
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Uozumi et al “Design and Preparation of 3,3′-Disubstituted 2,2′-Bis(oxazolyl)-1,1′-binaphthyls (boxax): New Chiral Bis(oxazoline) Ligands for Catalytic Asymmetric Wacker-Type Cyclization” J. Org. Chem. 1999, 64, 1620-1625.
Cai, et al., “Efficient synthesis of 6-mono-bromo-1,1′-bi-2-naphthol”,Tetrahedron Lett rs, vol. 43 (2002), pp. 4055-4057.
Hoche Heiko
Sumi Kenzo
Uozumi Yasuhiro
Fitzpatrick ,Cella, Harper & Scinto
Saeed Kamal A.
Takasago International Corporation
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