1962
DOI: 10.1002/hlca.19620450633
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Über bicyclische Sulfonamide

Abstract: HELVETICA CHIMICA ACTA ferner, dass das in Fig. 1 b wiedergegebene Spektrum in Anbetracht des Uberschusses an Schwefelsaure der konjugaten Saure XI1 entspricht.Die Frage, ob auch das Kation XI in geringer, durch das Protonenresonanz-Spektrum nicht erfassbarer Konzentration in stark sauren Losungsmitteln vorliegt, kann nicht eindeutig entschieden werden. In deuterierter Trifluoressigsaure (Fig. 3) fehlen die H3-Signale von X, wahrend das in Fig. l a dem H2 zugeordnete Dublett praktisch zu einem Singulett zusamm… Show more

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Cited by 22 publications
(25 citation statements)
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“…Catalytic hydrogenation of sydnone imine derivatives generally yields aliphatic amides in accordance with the following scheme (22). Apparently X-debenxylation occurs preferentially in this case with initial formation of a transitory unsubstituted sydnone imine, which presumably was converted into CIII by way of a tautomeric 1,2,3-oxadiasole intermediate and rearrangement of the latter.…”
Section: XCVImentioning
confidence: 78%
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“…Catalytic hydrogenation of sydnone imine derivatives generally yields aliphatic amides in accordance with the following scheme (22). Apparently X-debenxylation occurs preferentially in this case with initial formation of a transitory unsubstituted sydnone imine, which presumably was converted into CIII by way of a tautomeric 1,2,3-oxadiasole intermediate and rearrangement of the latter.…”
Section: XCVImentioning
confidence: 78%
“…From 3-phenylsydnone imine hydrochloride, for instance, the only product obtained was some chloroacetic acid. The absence of hydrazine formation in this reaction emphasizes the rather formal nature of the relationship between sydnones and sydnone imines (22).…”
Section: XCVImentioning
confidence: 96%
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