OXYMETHYLBORON COMPOUNDS

摘要

The invention provides compounds which are useful as safe substitutes for the organotin reagent used in coupling reaction for the hydroxymethylation of aromatic rings with a palladium catalyst and which can dispense with chromatographic purification with silica gel in the production and are suitable for mass production; and compounds applicable even to the hydroxymethylation of aromatic ring substrates which do not permit the progress of coupling reaction by conventional technique or have low reactivity.