Bifunctional polymeric Co(III) salen complexes 1a-g derived from (1R,2R)-(-)-1,2-diaminocyclohexane and a triazine-piperazine core were synthesized and screened for the asymmetric cycloaddition reaction of CO2 and an epoxide under mild conditions. A moderate K-rel value of 11.2 for the product propylene carbonate (ee = 74%) was obtained with catalyst 1e which does not require any external base as the co-catalyst. The polymeric Co(III)-CCl3COO (1e) was efficiently recycled 10 times without any significant loss in activity under the present reaction conditions.
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Univ Arkansas, Dept Chem, Little Rock, AR 72204 USAUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA
Ghosh, Anindya
Ramidi, Punnamchandar
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Univ Arkansas, Dept Chem, Little Rock, AR 72204 USAUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA
Ramidi, Punnamchandar
Pulla, Sharon
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Univ Arkansas, Dept Chem, Little Rock, AR 72204 USAUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA
Pulla, Sharon
Sullivan, Shane Z.
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Univ Arkansas, Dept Chem, Little Rock, AR 72204 USAUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA
Sullivan, Shane Z.
Collom, Samuel L.
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Univ Arkansas, Dept Chem, Little Rock, AR 72204 USAUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA
Collom, Samuel L.
Gartia, Yashraj
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Univ Arkansas, Dept Chem, Little Rock, AR 72204 USAUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA
Gartia, Yashraj
Munshi, Pradip
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Reliance Ind Ltd, Res Ctr, Vadodara 391346, Gujarat, IndiaUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA
Munshi, Pradip
Biris, Alexandru S.
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Univ Arkansas, Dept Appl Sci, Little Rock, AR 72204 USA
Univ Arkansas, Nanotechnol Ctr, Little Rock, AR 72204 USAUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA
Biris, Alexandru S.
Noll, Bruce C.
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Bruker AXS Inc, Madison, WI 53711 USAUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA
Noll, Bruce C.
Berry, Brian C.
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Univ Arkansas, Dept Chem, Little Rock, AR 72204 USAUniv Arkansas, Dept Chem, Little Rock, AR 72204 USA