[reaction: see text] Ni-catalyzed reductive coupling of aryl alkynes (1) and enantiomerically enriched alpha-oxyaldehydes (2) afford differentiated anti-1,2-diols (3) with high diastereoselectivity and regioselectivity, despite the fact that the methoxymethyl (MOM) and para-methoxybenzyl (PMB) protective groups typically favor syn-1,2-diol formation in carbonyl addition reactions of this family of aldehydes.
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Luanphaisarnnont et al. (2005) studied this question.
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