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0346267223
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Catalysts 1d-h have been reported previously and were synthesized according to the following literature procedures:
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Catalysts 1d-h have been reported previously and were synthesized according to the following literature procedures:. Mature D.J., Jones T.K., Xavier L.C., Blacklock T.J., Reamer R.A., Mohan J.J., Turner Jones E.T.T., Hoogsteen K., Baum M.W., and Grabowski E.J.J. J. Org. Chem. 56 (1991) 751
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34
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33645760870
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note
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Electron-donating groups on the benzene ring of the catalysts increase amine basicity by means of inductive or electronic effects.
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35
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0000688857
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These results point out that the double activation does not exclusively pertain to enantiomerically pure thioureas and chincona derivatives. For examples on bifunctional catalysis in Michael addition mediated by tertiary amines derived from cinchona derivatives, see:
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These results point out that the double activation does not exclusively pertain to enantiomerically pure thioureas and chincona derivatives. For examples on bifunctional catalysis in Michael addition mediated by tertiary amines derived from cinchona derivatives, see:. Hermann K., and Wynberg H. J. Org. Chem. 44 (1979) 2238
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Wynberg, H.2
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29844455571
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For recent reviews on organocatalysis, see:
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For recent reviews on organocatalysis, see:. Dalko P.I., and Moisan L. Angew. Chem., Int. Ed. 43 (2004) 5183
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Dalko, P.I.1
Moisan, L.2
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