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

Abstract

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.