4-(tert-Butoxycarbonylaminomethyl)phenylboronic acid → HCID 57900451, compound

Participants

Reaction Steps

Following Scheme 5, 2-bromo-6,7-dihydropyrido[3,2-b]thieno[2,3-d]oxepine and 4-(N-Boc-aminomethyl)-phenylboronic acid were reacted to give tert-butyl 4-(6,7-dihydropyrido[3,2-b]thieno[2,3-d]oxepin-9-yl)benzylcarbamate. MS: (ESI+)=409.1. Hydrogen chloride in dioxane (4 ml, 4 N) was added to a solution of 67 mg (0.16 mmol) of tert-butyl 4-(6,7-dihydropyrido[3,2-b]thieno[2,3-d]oxepin-9-yl)benzylcarbamate in 6 ml of methylene chloride and the mixture was stirred for 2 hours. The precipitate was collected, washed with methylene chloride and ethyl ether and dried in vacuum to give 335 (34 mg, 55%). MS: (ESI+) 309.1.

Provenance & Evidence