1,3-Dipolar addition of diethyl diazomethylphosphonate onto a CN double bond. Synthesis of triazolinyl and aziridinyl phosphonates
2004
Abstract Cycloaddition of diethyl 1-diazomethylphosphonate onto a C N double bond is described. It was found that the reaction of this phosphorus diazomethane with benzylidene-alkyl-amines resulted in the formation of (1-alkyl-5-phenyl-4,5-dihydro-1 H -[1,2,3]triazol-4-yl)-phosphonic acid diethyl esters, whereas its reaction with methylene-aryl-amines, generated from the corresponding hexahydro-1,3,5-triazines, led to diethyl esters of (aziridin-2-yl)-phosphonic acid.
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