Synthesis and chemical transformations of bis-2-imino-2,5-dihydrofurans
摘要:
New N,N'-(alkanediyl)bis(2-imino-2,5-dihydrofuran-3-carboxamides) have been synthesized by the condensation of tertiary alpha-hydroxy ketones with N,N'-(alkanediyl)bis(2-cyanoacetamides). The obtained products were transformed to the corresponding bisiminium chlorides, 2-oxo-, 2-dicyano-methylene and 2-N-methylimino derivatives.
Efficient synthesis of new butenolides by subsequent reactions: application for the synthesis of original iminolactones, bis-iminolactones and bis-lactones
We have developed the synthesis of twenty four new iminolactones, bis-iminolactones and bis-lactones by subsequent esterification–condensation or addition–condensation reactions according to two strategies from α-hydroxyketones. The X-ray diffraction data of a bis-iminolactone is described and present an interesting helical column packing.