Reactions of diazoacetates with phosphate triesters and thiophosphate triester: >P+-O-C-P+-S-C-< intermediacy formation

Article abstract of DOI:10.1016/S0040-4039(97)00214-1

Diazoacetates 1a,b undergo BF₃ · OEt₂ catalyzed carbenoid attack on the oxygen of the phosphoryl double bond of phosphate triesters 2a-c or on the sulfur of thiophosphoryl double band of thiophosphate 9 to form corresponding O-alkoxycarbonylmethylphosphates 3a-c or S-alkoxycarbonylmethylphosphate 13.