Valeryl chloride → HCID 22172711, compound
Reaction equation
[CH2:1]([O:5][CH2:6][CH2:7][CH2:8][NH:9][C:10]1[C:19]2[C:14](=[CH:15][CH:16]=[CH:17][N:18]=2)[N:13]=[CH:12][C:11]=1[NH2:20])[CH2:2][CH2:3][CH3:4].[C:21](Cl)(=O)[CH2:22][CH2:23][CH2:24][CH3:25]>>[CH2:1]([O:5][CH2:6][CH2:7][CH2:8][N:9]1[C:10]2[C:19]3[N:18]=[CH:17][CH:16]=[CH:15][C:14]=3[N:13]=[CH:12][C:11]=2[N:20]=[C:21]1[CH2:22][CH2:23][CH2:24][CH3:25])[CH2:2][CH2:3][CH3:4]Participants
Procedure
Using the general method of Example 73 Part A and Part B, N4-(3-butoxypropyl)[1,5]naphthyridine-3,4-diamine (3.7 g, 13.5 mmol) was reacted with valeryl chloride (1.7 mL, 14.3 mmol) and the resulting amide intermediate was cyclized to provide 2.9 g of 1-(3-butoxypropyl)-2-butyl-1H-imidazo[4,5-c][1,5]naphthyridine as a colorless oil. A small portion was purified by flash chromatography (silica gel eluting with ethyl acetate) to provide a pure sample as a white powder, m.p. 56.5–57.5° C. Analysis: Calculated for C20H28N4O: % C, 70.56; % H, 8.29; % N, 16.46; Found: % C, 70.48; % H, 8.25; % N, 16.61. 1H NMR (300 MHz, CDCl3): δ 9.32 (s, 1H), 8.90 (dd, J=4.3,1.6 Hz, 1H), 8.49 (dd, J=8.5,1.6 Hz, 1H), 7.57 (dd, J=8.5,4.3 Hz, 1H), 4.94 (t, J=7.0 Hz, 2H), 3.45–3.39 (m, 4H), 3.04 (t, J=7.9 Hz, 2H), 2.26 (pentet, J=6.1 Hz, 2H), 2.01–1.91 (m, 2H), 1.62–1.48 (m, 4H), 1.45–1.33 (m, 2H), 1.03 (t, J=7.3 Hz, 3H), 0.94 (t, J=7.3 Hz, 3H).
Sources & evidence
- ORD record
- ord-ed5af15984a84f6e90b6f1e6b6b44afb
- Source dataset
- uspto-grants-2006_05
- Patent number
- US07038051B2
Reaction notes
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