SCHEDULED MAINTENANCE
Aluminium(III)-promoted ene reactions with α-haloaldehydes are shown to exhibit a high anti-diastereofacial (non-chelation) selection or syn-diastereoselection to afford an efficient method for preparing stereochemically-defined β-haloalcohols including the 22R-hydroxy side chain unit in steroids.
K. Mikami, T. Loh and T. Nakai, J. Chem. Soc., Chem. Commun., 1991, 77 DOI: 10.1039/C39910000077
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