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ChemicalBook CAS DataBase List 2-(4-BroMophenyl)-6,8-dichloroiMidazo[1,2-a]pyridine
940423-76-7

2-(4-BroMophenyl)-6,8-dichloroiMidazo[1,2-a]pyridine synthesis

1synthesis methods
-

Yield:-

Reaction Conditions:

Stage #1: 3,5-dichloropyridin-2-amine;para-bromophenacyl bromide in ethanol at 65;
Stage #2: with ammonium bicarbonate in acetonitrile; pH=10;

Steps:

42

EXAMPLE 42; [2-(4-Bromophenyl)-6,8-dichloroimidazo[l,2-a]pyridin-3-yl]methanol; A mixture of 2-amino-3,5-dichloropyridine (0.33 g, 2.0 mmol) and 2,4'- dibromoacetophenone (0.28 g, 1.0 mmol) in ethanol (5 mL) was heated at 65 0C overnight. The mixture was purified by preparative HPLC (Xterra Cl 8, 50 mM NH4HCO3 (pH 10) - CH3CN) to give the intermediate 2-(4-bromophenyl)-6,8-dichloroimidazo[l,2-a]pyridine as a white solid (70 mg).

References:

WO2010/64020,2010,A1 Location in patent:Page/Page column 51-52