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Continuous Flow Esterification of a H-Phosphinic Acid, and Transesterification of H-phosphinates and H-Phosphonates under Microwave Conditions.


ABSTRACT: 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 different alkoxy groups. The latter species are of synthetic interest, as precursors for optically active reagents.

SUBMITTER: Kiss NZ 

PROVIDER: S-EPMC7037008 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

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Continuous Flow Esterification of a <i>H</i>-Phosphinic Acid, and Transesterification of <i>H</i>-phosphinates and <i>H</i>-Phosphonates under Microwave Conditions.

Kiss Nóra Zsuzsa NZ   Henyecz Réka R   Keglevich György G  

Molecules (Basel, Switzerland) 20200207 3


The microwave (MW)-assisted direct esterification of phenyl-<i>H</i>-phosphinic acid, transesterification of the alkyl phenyl-<i>H</i>-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 ph  ...[more]

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