We report a method for the synthesis of α-diazo-β-keto esters, phosphonates and sulfones via acylation of corresponding diazomethyl anions with N-acylbenzotriazoles. The N-o-amino-acylbenzotriazoles exhibited an unprecedented transphosphorylation reaction leading to diazoacetyl phenylphosphoramidates.
M. M. D. Pramanik and N. Rastogi, Org. Biomol. Chem., 2016, 14, 1239 DOI: 10.1039/C5OB01975C
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