Diisopropylethylamine → tert-butyl 4-((1-(2-(dimethylamino)ethyl)-2-neopentyl-1H-benzo[d]imidazol-5-ylthio)methyl)piperidine-1-carboxylate

Participants

Reaction Conditions

Reaction Steps

A mixture of 2-(5-bromo-2-neopentyl-1H-benzo[d]imidazol-1-yl)-N,N-dimethylethanamine (prepared in STEP A of Example 1, 1.41 g, 4.15 mmol), tert-butyl 4-(mercaptomethyl)piperidine-1-carboxylate (prepared in STEP B of Example 5, 1.20 g, 5.19 mmol), 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (120 mg, 0.208 mmol), tris(dibenzylideneacetone)dipalladium(0) (95.2 mg, 0.104 mmol) and N,N-diisopropylethylamine (1.09 mL, 6.23 mmol) in 1,4-dioxane (8.5 mL) was stirred at 130° C. for 18 h. The mixture was filtered through a celite and the filtrate was concentrated in vacuo. The residue (2.40 g) was used for the next step without purification.

Provenance & Evidence