Double Intramolecular 1,3-Dipolar Cycloaddition of Diazo-terminal Dialkyne: Synthesis of a New Bis(1,2,3-triazolo-1,4-oxazine)
作者:Nejib Husein Mekni、Ahmed Baklouti
DOI:10.3987/com-12-12516
日期:——
Explication of the formation of the tetracyclic isomer 4 The H and C NMR spectral data confirm the symmetrical structure proposed. In particular the H NMR spectrum shows an AB system corresponding to the allylic protons O-CH2-C=C, appearing into 5.0 ppm (JAB = 15 Hz). Moreover, the -CH2-N protons show another AB system (JAB 12 Hz) which is partially coupled with the proton of the asymmetric carbon. ANTIBACTERIAL