[reaction: see text] The first example of catalytic asymmetric conjugate addition of TMS-acetylene to a cyclic alpha,beta-enone has been accomplished using the chiral bisoxazoline-Ni complex 9 as catalyst and dimethylalumino TMS-acetylide and 2-cyclohexen-1-one as reactants.
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Kwak et al. (2004) studied this question.
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