Enantioselective cyclopropylation of various aldehydes proceeds using dicyclopropylzinc in the presence of a catalytic amount of chiral amino alcohol or thiophosphoramidate with Ti(OPri)4 to provide enantiomerically enriched cyclopropyl alkanols (up to 96.6% ee).
T. Shibata, H. Tabira and K. Soai, J. Chem. Soc., Perkin Trans. 1, 1998, 177 DOI: 10.1039/A707315A
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