Synthesis of 4(6)-aryloxy- and 4-arylthio-2,1,3-benzoxadiazoles
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Abstract
Reactions of 4,6-dibromo-2,1,3-benzoxadiazole with phenols or arenelthiols lead to 4-aryloxy-6-bromo-2,1,3-benzoxadiazoles or 4-arylthio-6-bromo-2,1,3-benzoxadiazoles, respectively. Isomeric 6-aryloxy-4-bromo-2,1,3-benzoxadiazoles were synthesized by replacement of the fluorine atom in 2,6-dibromo-4-fluoro-1-nitrosobenzene with phenols and treatment of the resulting 4-aryloxy-2,6-dibromo-1-nitrosobenzene with sodium azide.
Key words
4,6-diboromo-2,1,3-benzoxadiazole 4(6)-aryloxy-2,1,3-benzoxadiazoles 4-arylthio-2,1,3-benzoxadiazolesPreview
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