1974
DOI: 10.1002/jlac.197419740211
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Über die Oxidationsprodukte von Thiocarbonsäureamiden, XXIX1) Konfiguration alkyl‐ und aryl‐substituierter Thioharnstoff‐S‐trioxide

Abstract: Monoalkyl-, monoaryl-und dialkyl-substituierte Thioharnstoffe lassen sich glatt zu den Thiohqrnstoff-S-trioxiden oxidieren. Tribenzylthioharnstoff liefert bei der Oxidation in verschiedenen Losungsmitteln ebenso wie 1,3-Di-tert.-butylthioharnstoff Formamidinium-alkylsulfate, wobei die Art des Alkylrestes durch das Losungsmittel bestimmt wird. -1H-NMRspektroskopisch werden bei den Thioharnstoff-S-trioxiden Protonenaustauscheffekte, behinderte Rotation um die C2-N-Bindungen und die Konfiguration in Abhangigkeit … Show more

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Cited by 10 publications
(1 citation statement)
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“…The method is applicable to cyclic thioureas [238] and dihydrobenzimidazol-2-thiones; [239] three (or less) substituents at the nitrogen atoms are tolerated. Tetrasubstituted derivatives 173 have been prepared by methylation of 170 with diazomethane [240] or by reaction of 2-chloroamidinium chlorides 172 with silver sulfite. [241] A similar displacement reaction appears to be involved in the synthesis of 174 from carbene 136 and SO 2 X 2 (X ϭ Cl, F).…”
Section: Betainesmentioning
confidence: 99%
“…The method is applicable to cyclic thioureas [238] and dihydrobenzimidazol-2-thiones; [239] three (or less) substituents at the nitrogen atoms are tolerated. Tetrasubstituted derivatives 173 have been prepared by methylation of 170 with diazomethane [240] or by reaction of 2-chloroamidinium chlorides 172 with silver sulfite. [241] A similar displacement reaction appears to be involved in the synthesis of 174 from carbene 136 and SO 2 X 2 (X ϭ Cl, F).…”
Section: Betainesmentioning
confidence: 99%