Triethylamine → 6-Ethyl-5-trimethylsilanylethynyl-pyridin-2-ylamine

Participants

Reaction Steps

The title compound is synthesized according to general procedure GP2 starting from 18 g (72.6 mmol) 6-ethyl-5-iodo-pyridin-2-ylamine and 14.4 mL (102 mmol) 1-trimethylsilyl-ethyne using 1.38 g (7.3 mmol) CuI, 5.1 g (7.3 mmol) PdCl2(PPh3)2 and 101 mL (726 mmol) triethylamine in 100 mL dry THF. For the work-up the solvent is removed under reduced pressure, the crude product is taken up in ethyl acetate and the organic phase is extracted with water. The product is purified twice by chromatography on silica gel using a cyclohexane/ethyl acetate gradient. Yield: 12.73 g (80%).

Provenance & Evidence