- Facile synthesis of 4H-1,3-benzoselenazines by the aryne reaction
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Attempts to prepare benzoselenazoles by trapping benzynes with selenoureas failed. These reactions gave instead symmetrically substituted diaryl diselenides. However, when the selenoureas were converted to selenoazadienes, 4H-1,3-benzoselenazines were obtained in excellent yields. Furthermore, addition of the selenium atom of the selenoazadienes occurred regioselectively at the position 1 of 3-methoxybenzyne and 3,4-dimethoxybenzyne.
- Rao, U. Narasimha,Sathunuru, Ramadas,Biehl, Edward R.
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p. 1067 - 1075
(2007/10/03)
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