Reductions by hydrides and hydroboration. The stereoselectivity of new access methods to 3-arylmethyl-4-chromanones (homoisoflavone derivatives)

Article abstract of DOI:10.1016/S0040-4020(01)89754-4

The reduction of 3-arylmethyl-4-chromanones by sodium borohydride, lithium tri-tert-butoxyaluminum hydride and hydroboration followed by oxydation of 3-benzyl-4-hydroxy-coumarines lead to mixtures of Cis and Trans diastereoisomers of 3-arylmethyl-4-chroma