“…The Kulinkovich cyclopropanation has an intrinsic diastereoselectivity for the cis-1,2-dialkylated cyclopropanol when using Grignard reagents larger than ethyl, and the use of chiral TADDOL (a,a,a’,a’-tetraaryl-2,2-disubstituted-1,3-dioxolane-4,5-dimethanol) ligands has allowed for good enantioselectivity 88,101,102 . This diastereoselectivity can be reversed when cyclopropanating homoallylic alcohols as a result of coordinating directing group effects 99 or remote stereocentre influences 103 .…”