(2,3-Difluorophenyl)boronic acid → (6bR,10aS)-5-(2,3-difluorophenyl)-1,2,6b,7,8,9,10,10a-octahydropyrido[4,3-b][1,4]thiazino[2,3,4-hi]indole

Participants

Reaction Steps

Tert-butyl(6bR,10aS)-5-(2,3-difluorophenyl)-1,2,6b,9,10,10a-hexahydropyrido[4,3-b][1,4]thiazino[2,3,4-hi]indole carboxylate (50 mg, 45%) was prepared by the method of Example 443 Step A as a yellow oil from tert-butyl(6bR,10aS)-5-bromo-1,2,6b,9,10,10a-hexahydropyrido[4,3-b][1,4]thiazino[2,3,4-hi]indole-8(7H)-carboxylate (100 mg, 0.25 mmol) and 2,3-difluorophenylboronic acid (80 mg, 0.50 mmol). The title compound (22 mg, 96%) was prepared by the method of Example 443 Step B as a yellow oil from tert-butyl(6bR,10aS)-5-(2,3-difluorophenyl)-1,2,6b,9,10,10a-hexahydropyrido[4,3-b][1,4]thiazino[2,3,4-hi]indole carboxylate (30 mg, 0.067 mmol). 1H NMR (CDCl3, 300 MHz) δ1.91-2.05 (m, 2H), 2.60-2.80 (m, 1H), 2.81-3.02 (m, 2H), 3.03-3.18 (m, 2H), 3.20-3.38 (m, 2H), 3.39-3.63 (m, 4H), 6.97 (dd, J=22.4, 2.2 Hz, 1H), 7.02-7.14 (m, 4H) ppm.

Provenance & Evidence