4-Butylpiperidine → (R)-4-[3-(4-Butylpiperidin-1-yl)-2-methyl-propyl]-6-methoxy-4H-benzo[1,4]oxazin-3-one

HRID 969398Notes

Reaction equation

HRID 969398 reaction equation
I[CH2:2][C@@H:3]([CH3:18])[CH2:4][N:5]1[C:10]2[CH:11]=[C:12]([O:15][CH3:16])[CH:13]=[CH:14][C:9]=2[O:8][CH2:7][C:6]1=[O:17].[CH2:19]([CH:23]1[CH2:28][CH2:27][NH:26][CH2:25][CH2:24]1)[CH2:20][CH2:21][CH3:22]>CCCCCCC.CCOC(C)=O>[CH2:19]([CH:23]1[CH2:28][CH2:27][N:26]([CH2:2][C@@H:3]([CH3:18])[CH2:4][N:5]2[C:10]3[CH:11]=[C:12]([O:15][CH3:16])[CH:13]=[CH:14][C:9]=3[O:8][CH2:7][C:6]2=[O:17])[CH2:25][CH2:24]1)[CH2:20][CH2:21][CH3:22]

Participants

4

Reactant 2

HCID 132838674-ButylpiperidineHCID 68912041(S)-4-(3-Iodo-2-methylpropyl)-6-methoxy-4H-benzo[1,4]oxazin-3-one

Product 1

HCID 68908167(R)-4-[3-(4-Butylpiperidin-1-yl)-2-methyl-propyl]-6-methoxy-4H-benzo[1,4]oxazin-3-oneYield 40.9%

Reagents, catalysts & solvents 1

HCID 21899848Ethylacetate heptaneSolvent

Procedure

The compound (S)-4-(3-Iodo-2-methylpropyl)-6-methoxy-4H-benzo[1,4]oxazin-3-one (111MF36) (0.636 g, 1.77 mmol) and 4-butylpiperidine (0.226 g, 1.6 mmol) were mixed according to GP16. CC (SiO2; Heptane/EtOAc 4:1-4) and prep HPLC gave the title compound (111MF38) (0.245 g, 27%). 1H NMR (CDCl3) δ 6.89 (d, J=8.8 Hz, 1H), 6.72 (d, J=2.4 Hz, 1H), 6.50 (dd, J=2.8, J=8.8 Hz, 1H), 4.54 (q, J=32.4, J=14.8, 2H), 3.94-3.90 (m, 2H), 3.77 (s, 3H), 2.90 (d, J=11.2 Hz, 1H), 2.72 (d, J=10.8 Hz, 1H), 2.25-2.10 (m, 3H), 1.93 (t, J=11.2 Hz, 1H), 1.80 (t, J=11.2 Hz, 1H), 1.61 (d, J=10.8 Hz, 2H), 1.31-1.19 (m, 9H), 0.90-0.86 (m, 6H); 13C NMR (CDCl3) δ 165.3, 155.5, 139.7, 129.8, 117.2, 107.1, 103.3, 68.0, 64.2, 55.9, 55.7, 54.5, 45.5, 36.5, 36.0, 32.9, 32.5, 29.2, 29.2, 23.1, 16.9, 14.3.

Sources & evidence

ORD record
ord-69bd2b9f8bb64876ad63673642ca0284
Source dataset
uspto-grants-2007_12
Patent number
US07307075B2

Reaction notes

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