Three-step assembly of 4-aminotetrahydropyran-2-ones from isoxazoline-2-oxides
作者:A. S. Naumova、A. A. Mikhaylov、Yu. A. Khomutova、R. A. Novikov、D. E. Arkhipov、A. A. Korlyukov、S. L. Ioffe
DOI:10.1039/c3ra47309k
日期:——
constructed by a three step protocol from easily available isoxazoline 2-oxides. In the first stage, the carbon skeleton of the target product is formed upon a C,C-coupling of a silyl ketene acetal with a nitronate function, under silyl triflate catalysis. The key step of the assembly consists of the oxidative cleavage of an endocyclic N–O bond of intermediate cyclic nitroso acetals with mCPBA, accompanied