Rearrangement of Isoxazoline-5-spiro Derivatives. 8. Selective Formation of Tetrahydropyridones from C,C-Disubstituted Nitrones

Article abstract of DOI:10.1021/jo00047a019

The thermal rearrangement of isoxazolidines 3, 7, 9, 17, and 19 obtained by 1,3-dipolar cycloaddition of C,C-disubstituted nitrones and methylenecyclopropanes 1 and 6 has been studied.The lack of hydrogen at the C-3 position of the isoxazolidine ring lead