2-Amino-3-bromopyridine → 8-Bromo-2-(4-(trimethylsilyl)but-3-ynyl)-imidazo[1,2-a]pyridine

Participants

Reaction Steps

The title compound was prepared in accordance with the general method of Example 223(D), from 3-bromopyridin-2-amine (280 mg, 1.60 mmol) and 1-bromo-6-(trimethylsilyl)hex-5-yn-2-one (compound 223(C), 870 mg, 3.5 mmol). The crude residue was purified over silicagel chromatography (prepacked 25 g silicagel column, DCM/MeOH: from 100/0 to 98/2 as eluent) to afford 315 mg of 8-bromo-2-(4-(trimethylsilyl)but-3-ynyl)-imidazo[1,2-a]pyridine (Yield: 61%) as a yellow oil.

Provenance & Evidence