Hydrochloric Acid → 3-Pyridinemethanamine,2-(methylamino)-(9CI)

Participants

Reaction Steps

Borane/THF complex (1.44 mol) as a 1M solution in tetrahydrofuran was added, dropwise, to a solution of 2-(methylamino)-nicotinonitrile (63.9 g, 480 mmol) in tetrahydrofuran (480 mL). This mixture was stirred at room temperature for 1 hour then heated to reflux for 3 hours. The reaction mixture was quenched by dropwise addition of methanol (136 mL, 3.36 mol) followed by 6M HCl (80 mol, 480 mmol) and 10% HCl (400 mL). The phases were separated and the organic phase washed with brine (2×480 mL). The aqueous phase was made alkaline with 50% aqueous NaOH (250 g). The aqueous phase was extracted with dichloromethane (2×480 mL) and the organic extracts dried over Na2SO4. Concentration in vacuo gave 44.85 g of 3-(aminomethyl)-2-methylaminopyridine as a pale yellow oil.

Provenance & Evidence