Optical inductions of up to 66% ee have been achieved in the Michael addition of methyl vinyl ketone to methyl 1-oxo-2-indanecarboxylate to give (R)-1. The catalyst used was Co(acac)2/(+)-(nn); nn = H2NCPhHCPhHNH2. Depending upon the conditions, the (S)-enantiomer can also be obtained. With the complex Co(acac)2[()-(nn)], (S)-1 is formed.
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Brunner et al. (1984) studied this question.
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