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Simple and functionalized N-phosphorylalkyl imines and N-phosphorylalkyl-N'-phenyl-carbodiimides are obtained by aza-Wittig reaction of phosphazenes derived from aminophosphonates with carbonyl compounds and phenyl isocyanate. The reaction with dimethylformamide diethyl acetal (DMF-DEA) of these functionalized imines leads to the synthesis of 4-amino-3-phosphoryl-2-azadienes. N-Phosphorylmethyl imine...
An efficient synthesis of 2H-azirines substituted with a phosphonate group is described. The key step is an alkaloid-mediated Neber reaction of β-ketoxime tosylates. Reduction of 2H-azirines with sodium borohydride in ethanol gives 2-phosphorylated cis-aziridines.
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