The microwave (MW)-assisted direct esterification of phenyl-H-phosphinic acid,
transesterification of the alkyl phenyl-H-phosphinates so obtained, and the similar reaction of
dibenzyl phosphite (DBP) were investigated in detail, and the batch accomplishments were translated
into a continuous flow operation that, after optimization of the parameters, such as temperature
and flow rate, proved to be more productive. Alcoholysis of DBP is a two-step process involving an
intermediate phosphite with two di�erent alkoxy groups. The latter species are of synthetic interest,
as precursors for optically active reagents
