Furoxan rearrangement of some pyridofuroxan derivatives studied by 1H, 13C, 14N, 15N and 17O NMR spectroscopy

…, B Kamieński, K Kamieńska??Trela…

Index: Cmoch; Kamienski; Kamienska-Trela; Stefaniak; Webb Journal of Physical Organic Chemistry, 2000 , vol. 13, # 8 p. 480 - 488

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Citation Number: 14

Abstract

Abstract Pyridofuroxan ([1, 2, 5] oxodiazolo [3, 4-b] pyridine 1-oxide) undergoes isomerization between the N1-oxide and N3-oxide forms which can be observed by the 1 H, 13 C and 15 N NMR spectroscopy but not by 14 N and 17 O NMR at ambient and low temperatures. The rearrangement becomes slower at low temperatures and at 233 K 1 H NMR signals for the two structures become observable. 1 H, 13 C and 15 N chemical ...