par Nasielski, Jacques 
;Heilporn, Sylvie ;Chauveheid, Eric ;Poppe, Katia ;Hinkens, Raymonde
Référence Bulletin des Sociétés chimiques belges, 99, 10, page (783-788)
Publication Publié, 1990
;Heilporn, Sylvie ;Chauveheid, Eric ;Poppe, Katia ;Hinkens, Raymonde Référence Bulletin des Sociétés chimiques belges, 99, 10, page (783-788)
Publication Publié, 1990
Article révisé par les pairs
| Résumé : | 2,3‐Diphenylquinoxaline‐N‐oxide 1 with thionyl chloride gives only 5‐chloro‐ and 6‐chloro‐quinoxaline and very little deoxygenation. Phenazine‐N5‐oxide 2, in the same conditions, gives mainly 2‐chlorophenazine and minor amounts of 1‐chlorophenazine, but here deoxygenation is an important pathway. Freshly recrystallized para‐toluenesulfonyl chloride gives a high chlorination‐to‐tosyloxylation ratio. All these results point to a variable ability of acid chlorides to yield homocycle chlorination or acyloxylation; this is confirmed by the observation that phenazine‐N5‐oxide and phosphoryl chloride give fair amounts of aryl phosphate. Copyright © 1990 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim |
