AN EFFICIENT SYNTHESIS OF 2-AMINOBENZOXAZOLES AND 2-AMINOBENZOTHIAZOLES FROM 2-AMINOPHENOLS OR 2-AMINOTHIOPHENOLS AND ISOSELENOCYANATES

[摘要]：An expeditious method to access 2-aminobenzoxazoles and 2-aminobenzothiazoles from various substituted 2-aminophenols and 2-aminothiophenols, respectively, with isoselenocyanates in a one pot procedure is reported. Elemental Se precipitates nearly quantitatively in the reaction without any deselenizing agent and it can be reused. A possible mechanism for the formation of the target products is proposed.

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