An efficient protocol for the synthesis of six-membered N, O-heterocycles via a 1,3-dipolar (3+3) cycloaddition between nitrile oxide and α-diazo esters
Keywords: α-diazo ester; Nitrile oxide; N,O-heterocycles; 1,3-Dipolar cycloaddition; 1,2,4-Oxadiazine and 1,4,2-dioxazine derivatives;