Sodium Iodide → HCID 43509650, compound

Participants

Reaction Conditions

Reaction Steps

2-[4-(4-Methyl-[1,4]diazepan-1-yl)-butoxy]-isonicotinonitrile. To a solution of 1-methyl-[1,4]diazepane (21.3 g, 185 mmol, 2.0 equiv) and 4-chloro-butan-1-ol (10.0 g, 92.6 mmol, 1.0 equiv) in 1-butanol (200 mL) were added K2CO3 (38.0 g, 278 mmol, 3.0 equiv) and NaI (13.9 g, 92.6 mmol, 1.0 equiv). The mixture was warmed to 95° C. and stirred for 36 h. The mixture was then cooled to rt, diluted with water, and extracted with chloroform (3×100 mL). The combined extracts were washed with brine, dried (MgSO4), filtered, and concentrated. Purification by Method 2 afforded 9.3 g of 4-(4-methyl-[1,4]diazepan-1-yl)-butan-1-ol with a small unidentified impurity. A portion of the impure alcohol (5.0 g) was dissolved in DMF (50 mL) and cooled to 0° C. Sodium hydride (60% dispersion in oil, 1.29 g, 32.2 mmol, 1.2 equiv) was added. The mixture was warmed to rt, stirred for 1 h, and then re-cooled to 0° C. A solution of 2-chloro-isonicotinonitrile (3.72 g, 26.8 mmol, 1.0 equiv) in DMF (25 mL) was added dropwise. The mixture was stirred at rt for 18 h, then was diluted with water (25 mL) and satd. aq. NaHCO3 (100 mL), and was extracted with chloroform (3×100 mL). The combined extracts were washed with brine, dried (Na2SO4), filtered and concentrated. Purification by Method 2 afforded the title compound (1.0 g). MS (electrospray): mass calculated for C16H24N4O, 288.20; m/z found, 289.4 [M+H]+. 1H NMR (400 MHz, CDCl3): 8.28 (dd, J=4.4 Hz, 0.8 Hz, 1H), 7.05 (dd, J=3.9, 1.1 Hz, 1H) 6.96 (s, 1H), 4.33 (t, J=6.6 Hz, 2H), 2.75-2.68 (m, 4H), 2.65-2.57 (m, 4H), 2.56-2.49 (m, 2H), 2.35 (s, 3H), 1.84-1.74 (m, 4H), 1.66-1.55 (m, 2H).

Provenance & Evidence