3-Fluorobenzaldehyde → (+/-)-6-[4-(1-(3-Fluoro-benzyl)-piperidin-3-yl)-phenoxy]-nicotinamide

HRID 130748Notes

Reaction equation

HRID 130748 reaction equation
Cl.[NH:2]1[CH2:7][CH2:6][CH2:5][CH:4]([C:8]2[CH:23]=[CH:22][C:11]([O:12][C:13]3[CH:21]=[CH:20][C:16]([C:17]([NH2:19])=[O:18])=[CH:15][N:14]=3)=[CH:10][CH:9]=2)[CH2:3]1.[F:24][C:25]1[CH:26]=[C:27]([CH:30]=[CH:31][CH:32]=1)[CH:28]=O.[BH4-].[Na+]>>[F:24][C:25]1[CH:26]=[C:27]([CH:30]=[CH:31][CH:32]=1)[CH2:28][N:2]1[CH2:7][CH2:6][CH2:5][CH:4]([C:8]2[CH:9]=[CH:10][C:11]([O:12][C:13]3[CH:21]=[CH:20][C:16]([C:17]([NH2:19])=[O:18])=[CH:15][N:14]=3)=[CH:22][CH:23]=2)[CH2:3]1

Participants

4

Reactant 3

HCID 680093-FluorobenzaldehydeHCID 4311764Sodium borohydrideHCID 68747046(+/-)-6-(4-Piperidin-3-yl-phenoxy)-nicotinamide hydrochloride2×

Product 1

HCID 59730162(+/-)-6-[4-(1-(3-Fluoro-benzyl)-piperidin-3-yl)-phenoxy]-nicotinamideYield 41.4%

Procedure

Using a method similar to Example 324, 6-(4-piperidin-3-yl-phenoxy)-nicotinamide (free base of compound of example 322) (0.98 mL of 0.12 M stock solution in methanol, 0.0343 g, 0.115 mmol), 3-fluoro-benzaldehyde (0.0180 mL, 0.170 mmol), and sodium borohydride (0.0102 g, 0.270 mmol) provide 0.0193 g (41%) of the title compound as a white foam: high resolution mass spectrum (electrospray): m/z calc for C24H25FN3O2 406.1931, found 406.1917; 1H NMR (CDCl3): 8.56 (d, 1H, J=2.4 Hz), 8.14 (dd, 1H, J=2.4, 8.8 Hz), 7.28-7.21 (m, 3H), 7.09-7.02 (m, 4H), 6.95-6.88 (m, 2H), 5.74 (s br, 2H), 3.52 (d, 1H, J=13.7 Hz), 3.50 (d, 1H, J=13.7 Hz), 3.00-2.93 (m, 1H), 2.93-2.80 (m, 2H), 2.06-1.90 (m, 3H), 1.80-1.64 (m, 2H), 1.44 (dq, 1H, J=4.4, 12.2 Hz).

Sources & evidence

ORD record
ord-a90f85eb01204d42aa3fead58dd99c84
Source dataset
uspto-grants-2008_06
Patent number
US07381719B2

Reaction notes

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