Nature of the structural change during the mutarotation of sugar osazones
1967; Elsevier BV; Volume: 5; Issue: 4 Linguagem: Inglês
10.1016/s0008-6215(00)81112-x
ISSN1873-426X
AutoresL. Mester, E Moczar, G. Vass, Anneliese Schimpl,
Tópico(s)Fluorine in Organic Chemistry
ResumoMutarotation of sugar osazones is due to an equilibration, through the action of a basic solvent, of the initial N-H⋯N chelated structure A with an N-H⋯O chelated isomer. Formazan formation and u.v. and n.m.r. spectral data support the restricted-rotation isomer F of the syn (i.e., cis C-l-N, NH-Ph) isomerized, N-H⋯O chelated, bis(phenylhydrazone) structure as the final form of sugar osazones in mutarotation.
Referência(s)