Polyhalogeno-allenes and -acetylenes. Part 16. Further 1,3-dipolar cycloadditions to perfluoropropadiene
作者:Gordon B. Blackwell、Robert N. Haszeldine、David R. Taylor
DOI:10.1039/p19830000001
日期:——
The nitrones PhCHN+(R)O–(R = Me, Et, PhCH2, and Ph) react rapidly with perfluoropropadiene to give the corresponding 2-R-4-difluoromethylene-5,5-difluoro-3-phenylisoxazolidines in good yield, although these isoxazolidines are unstable and decompose during catalytic hydrogenation. Perfluoropropadiene also reacts with diazophenylmethane and diazodiphenylmethane, giving 4-difluoromethylene-3,3-difluoro-5-phenyl-