in the present study, we report an environmentally benign synthesis of 2-arylbenzothiazoles derivatives from _o_-aminothiophenol and aldehydes in aqueous medium using _β_-cyclodextrin polymer as a catalyst and air as an oxidant. The polymer showed excellent catalytic activity, recovered, reused six times, and the catalyst efficiency remained unchanged. This suggests that the catalyst is an efficient and green catalyst for the ... إقراء المزيد