Selenation 1,3-Selenazoles

Selenaboranes, 4 204 Selenac, 22 73t Selenate alums, 22 89 Selenates, 22 88, 89 gallium, 12 359 Selenazole uses of, 22 102 Selenazole derivatives uses of, 22 102... 

Diamino-bcnzol reagiert in einer Redox-cyclisierung mit 2-Amino-4-oxo-4,5-dihydro-l,3-selenazol. Das Diamin kondensiert vermutlich liber ein spirocyclisches N,N-Acetal, das unter Selen-Abspaltung 2-Acetylamino-benzimidazol ( 100% Schmp. 312-315°) bildet317. 

Syntheses of unsaturated 1,3-selenazole have been achieved mainly by reactions using selenating reagents such as selenoamides, selenoureas, selenazadienes, or isoselenocyanates. There is a review article which gives details <2002SOS941>. 

Syntheses of saturated 1,3-selenazoles have been carried out by reactions using selenating reagents such as selenour-eas, potassium selenocyanate, selenium and carbon monoxide or selenocysteine. 

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