Sodium Bicarbonate → 7-[(2-Chloro-pyridine-3-carbonyl)-amino]-4,4-dimethyl-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester

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Reaction Steps

To a solution of 2-chloronicotinoyl chloride (3.52 g, 20 mmol, 1.0 eq.) and 7-amino-4,4-dimethyl-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester (5.52 g, 20 mmol, 1.0 eq.) in CH2Cl2 (100 mL) was added NaHCO3 (6.4 g, 80 mmol, 4.0 eq.). The mixture was stirred for 1 h at RT, then filtered and concentrated, followed by drying on a vacuum pump for 3 hours. 7-[(2-Chloro-pyridine-3-carbonyl)-amino]-4,4-dimethyl-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester was obtained as a white foamy solid. This title compound was used for next step without further purification.

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