Diisopropylethylamine → 4-(3,3''-Dimethyl-3',4',5',6'-tetrahydro-2'H-[2,2';6',2'']terpyridin-1'-ylmethyl)-benzonitrile

HRID 1784205Notes

Reaction equation

HRID 1784205 reaction equation
[CH3:1][C:2]1[C:3]([CH:8]2[CH2:13][CH2:12][CH2:11][CH:10]([C:14]3[C:19]([CH3:20])=[CH:18][CH:17]=[CH:16][N:15]=3)[NH:9]2)=[N:4][CH:5]=[CH:6][CH:7]=1.Br[CH2:22][C:23]1[CH:28]=[CH:27][C:26]([C:29]#[N:30])=[CH:25][CH:24]=1.CCN(C(C)C)C(C)C>CN(C=O)C>[CH3:1][C:2]1[C:3]([CH:8]2[CH2:13][CH2:12][CH2:11][CH:10]([C:14]3[C:19]([CH3:20])=[CH:18][CH:17]=[CH:16][N:15]=3)[N:9]2[CH2:22][C:23]2[CH:28]=[CH:27][C:26]([C:29]#[N:30])=[CH:25][CH:24]=2)=[N:4][CH:5]=[CH:6][CH:7]=1

Participants

5

Reactant 3

HCID 81531DiisopropylethylamineHCID 869964-(Bromomethyl)benzonitrileHCID 674211653,3''-Dimethyl-1',2',3',4',5',6'-hexahydro-[2,2'; 6',2'']terpyridine

Product 1

HCID 674219774-(3,3''-Dimethyl-3',4',5',6'-tetrahydro-2'H-[2,2';6',2'']terpyridin-1'-ylmethyl)-benzonitrileYield 94.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

Using General Procedure A: A solution of 3,3″-dimethyl-1′,2′,3′,4′,5′,6′-hexahydro-[2,2′;6′,2″]terpyridine (0.502 g, 1.83 mmol), α-bromo-p-tolunitrile (0.538 g, 2.75 mmol), KI (65 mg, 0.40 mmol), and DIPEA (0.72 mL, 4.13 mmol) in DMF (9 mL) was heated at 60° C. for 16 hours. Purification of the crude material by column chromatography on silica gel (40:1:1 CH2Cl2—CH3OH—NH4OH) provided 0.66 g (94%) of 4-(3,3″-dimethyl-3′,4′,5′,6′-tetrahydro-2′H-[2,2′;6′,2″]terpyridin-1′-ylmethyl)-benzonitrile as a white solid. 1H NMR (CDCl3) δ 1.60-1.73 (m, 3H), 2.02-2.12 (m, 1H), 2.18-2.34 (m, 2H), 2.41 (s, 6H), 3.56 (s, 2H), 4.14 (d, 2H, J=10.5 Hz), 6.64 (d, 2H, J=8.1 Hz), 6.95 (dd, 2H, J=7.5, 4.8 Hz), 7.10 (d, 2H, J=7.8 Hz), 7.22 (d, 2H, J=7.2 Hz), 8.37 (d, 2H, J=3.9 Hz); ES-MS m/z 383 (M+H).

Workup

  1. customPurification of the crude material by column chromatography on silica gel (40:1:1 CH2Cl2—CH3OH—NH4OH)

Sources & evidence

ORD record
ord-a62703f2863846e6afd6ff32984ed4ec
Source dataset
uspto-grants-2009_03
Patent number
US07501518B2

Reaction notes

Loading…