conveniently prepared in moderate or good yields by direct 1,3-dipolarcycloaddition. Isoxazolidines 5-7 derived from fluorinated N-vinyl nucleobases and N-alkyl-methylenenitrones were obtained with complete regiocontrol and stereocontrol and the reactions proceeded with full transfer of the dipolarophile geometry to the cycloadduct. The cycloadditionreactions of N-alkyl-trifluoromethylnitrones with N-vinyl
Fluoro-nitrones and polymers containing the –N–O–C– repeating unit
作者:R. E. Banks、W. T. Flowers、R. N. Haszeldine、P. E. Jackson
DOI:10.1039/c19650000201
日期:——
Chemo-, regio-, and stereoselectivity in 1,3-dipolar cycloaddition of piperine with nitrones. A cycloadditive route to aminoalcohols
作者:Hanna Wójtowicz-Rajchel、Marcin Kaźmierczak
DOI:10.1039/c9nj06442g
日期:——
The chemoselective 1,3-dipolar cycloaddition between piperine and nitrones and further transformation of the cycloadducts to novel acyclic 1,3-amino alcohols.