Annulated 1,2,3-triazoles. 3 [1]. Synthesis of 1,2,3-triazolo[4,5-b][1,5]benzoxazepin-10(9H)-ones and 10-(4-substituted-1-piperazinyl)-1,2,3-triazolo[4,5-b][1,5]benzoxazepines

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