Isoxazoline N-oxides have been regarded as an important class of building blocks for the construction of biologically active molecules[1] and complex natural products.
Apart from the well-known Michaelis-Arbuzov and Michaelis-Becker reactions,the phospha-Michael addition is probably one of the most important tools for P-C bond formation.
Benzene derivatives,especially polysubstituted benzenes,represent privileged structural motifs in a myriad of bioactive natural products,pharmacologically interesting compounds and functional material