Hexanal → (+/-)-6-[4-(1-Hexyl-piperidin-3-yl)-phenoxy]-nicotinamide

HRID 130749Notes

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.[CH:24](=O)[CH2:25][CH2:26][CH2:27][CH2:28][CH3:29].[BH4-].[Na+]>>[CH2:24]([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)[CH2:25][CH2:26][CH2:27][CH2:28][CH3:29]

Participants

Reactant 3

HCID 6184Hexanal

HCID 4311764Sodium borohydride

HCID 68747046(+/-)-6-(4-Piperidin-3-yl-phenoxy)-nicotinamide hydrochloride2×

Product 1

HCID 59730220(+/-)-6-[4-(1-Hexyl-piperidin-3-yl)-phenoxy]-nicotinamideYield 30%

Procedure

Using a method similar to Example 324, 6-(4-piperidin-3-yl-phenoxy)-nicotinamide (free base of compound of example 322) (0.0260 g, 0.0874 mmol), hexanal (0.0195 mL, 0.162 mmol), and sodium borohydride (0.0076 g, 0.200 mmol) provide 0.0100 g (30%) of the title compound as an off-white foam: high resolution mass spectrum (electrospray): m/z calc for C23H32N3O2 382.2495, found 382.2513; 1H NMR (methanol-d4): 8.66 (d, 1H, J=2.0 Hz), 8.29 (dd, 1H, J=2.4, 8.8 Hz), 7.41-7.35 (m, 2H), 7.16-7.11 (m, 2H), 7.02 (d, 1H, J=8.3 Hz), 3.23-3.16 (m, 2H), 2.95 (tt, 1H, J=3.4, 11.7 Hz), 2.63-2.56 (m, 2H), 2.35-2.22 (m, 2H), 2.05-1.90 (m, 2H), 1.83 (tq, 1H, J=3.9, 13.7 Hz), 1.70-1.56 (m, 3H), 1.45-1.30 (m, 6H), 0.96 (t, 3H, J=6.3 Hz).

Sources & evidence

ORD record: ord-d94ab31d88c2475cac56d13562b2253a
Source dataset: uspto-grants-2008_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07381719B2

Reaction notes

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