反应详情

温度

160 °C

A mixture of 2-(5-bromo-2-neopentyl-1H-benzo[d]imidazol-1-yl)-N,N-dimethylethanamine (prepared in STEP A of Example 1, 937 mg, 2.77 mmol), (R)-tert-butyl 3-mercaptopyrrolidine-1-carboxylate (prepared in STEP C of Example 18, c.a. 3.60 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (80.1 mg, 0.138 mmol), tris(dibenzylideneacetone)dipalladium(0) (63.1 mg, 0.0690 mmol) and N,N-diisopropylethylamine (725 microL, 4.15 mmol) in 1,4-dioxane (15 mL) was stirred at 160° C. for 1 h under microwave. The mixture was concentrated in vacuo and the residue was purified by amine gel column chromatography (hexane-ethyl acetate, gradient) to give the title compound (802 mg, 63% mmol) as a pale orange gum.

1. concentrationThe mixture was concentrated in vacuo
2. customthe residue was purified by amine gel column chromatography (hexane-ethyl acetate, gradient)