An unexpected reaction of 2-alkynylaryldiazonium tetrafluoroborate with sulfur dioxide.
نویسندگان
چکیده
An unexpected result from the reaction of 2-alkynylaryldiazonium tetrafluoroborate with sulfur dioxide is described. In the presence of morpholin-4-amine, this transformation catalyzed by copper(i) bromide proceeds through insertion of sulfur dioxide and intramolecular 5-endo cyclization, leading to benzo[b]thiophene 1,1-dioxides in moderate to good yields.
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ورودعنوان ژورنال:
- Chemical communications
دوره 51 1 شماره
صفحات -
تاریخ انتشار 2015