Beletskaya IP, Titanyuk ID. Synthesis of α-Aryldiazophosphonates
via a Diazo Transfer Reaction.
J Org Chem 2022;
87:2748-2757. [PMID:
35191306 DOI:
10.1021/acs.joc.1c02673]
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Abstract
The simple synthetic procedure for preparation of α-aryl-α-diazophosphonates via a diazo transfer reaction is proposed. Benzylphosphonates reacted with tosyl azide (TsN3) in the presence of potassium tert-butoxide (KOtBu) to afford diazophosphonates in a yield up to 79%. The proposed method is general. The reaction uses easily available starting materials, tolerates various functional groups, and may be applied for multi-gram scale synthesis.
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