1965
DOI: 10.1002/anie.196505741
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The Structure of Sugar Phenylosazones

Abstract: Dedicated to Professor Fritz Micheel on the occasion of his 65th birthdayThe open-chain chelate structure of sugar osazones, first proposed by Fieser and Fieser, has now been confirmed by chemical methods, X-ray analysis, and NMR spectroscopy. These investigations showed that the properties of sugar osazones are best described by a formula containing a quasi-aromatic chelate ring.

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Cited by 14 publications
(1 citation statement)
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“…The radical species observed from melibiose osazone in alkaline solution may indicate the possible existence of a small proportion of a cyclic structure in equilibrium with the open-ring structure. NMR studies of the sugar osazones in methyl sulfoxide indi cate that they have mainly an open-chain chelate structure (5,44). The lack of rearrangement of the radical obtained from melibiose osazone as compared with the rearrangement of the radical from D-mannose phenyl hydrazone can be reconciled with the difference between the cyclic structure of the latter compound with that of the osazone.…”
Section: (Phnhnhphmentioning
confidence: 81%
“…The radical species observed from melibiose osazone in alkaline solution may indicate the possible existence of a small proportion of a cyclic structure in equilibrium with the open-ring structure. NMR studies of the sugar osazones in methyl sulfoxide indi cate that they have mainly an open-chain chelate structure (5,44). The lack of rearrangement of the radical obtained from melibiose osazone as compared with the rearrangement of the radical from D-mannose phenyl hydrazone can be reconciled with the difference between the cyclic structure of the latter compound with that of the osazone.…”
Section: (Phnhnhphmentioning
confidence: 81%