(2-Bromoethoxy)-tert-butyldimethylsilane → N-(1-((1-(2-(tert-butyldimethylsilyloxy)ethyl)-1H-pyrazol-4-yl)methyl)-3-ethyl-1H-indazol-4-yl)imidazo[1,2-a]pyridine-3-carboxamide

Beteiligte Stoffe

Reaktionsschritte

To N-(1-((1H-pyrazol-4-yl)methyl)-3-ethyl-1H-indazol-4-yl)imidazo[1,2-a]pyridine-3-carboxamide (20 mg, 0.052 mmol) in DMF (5 mL) was added (2-bromoethoxy)(tert-butyl)dimethylsilane (37 mg, 0.16 mmol), cesium hydroxide hydrate (17 mg, 0.10 mmol) and 4 angstrom molecular sieves (2 g). The reaction mixture was stirred for 3 hours and then concentrated. Purification by silica gel chromatography (DCM/MeOH 10:1) gave the desired product (16 mg).

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