Methyl iodide → HCID 16042135, compound

HRID 545176Notes

Reaction equation

HRID 545176 reaction equation
[Na].[CH3:2][O:3][C:4]1[C:13]2[C:8](=[C:9]([O:14][CH3:15])[CH:10]=[CH:11][CH:12]=2)[N:7]=[C:6]([C:16]([N:18]2[CH2:23][CH2:22][C:21]3([CH2:32][C:31](=[O:33])[C:30]4[C:25](=[CH:26][CH:27]=[C:28]([C:34]5[NH:38][N:37]=[N:36][N:35]=5)[CH:29]=4)[O:24]3)[CH2:20][CH2:19]2)=[O:17])[CH:5]=1.[CH3:39]I>CN(C=O)C>[CH3:2][O:3][C:4]1[C:13]2[C:8](=[C:9]([O:14][CH3:15])[CH:10]=[CH:11][CH:12]=2)[N:7]=[C:6]([C:16]([N:18]2[CH2:23][CH2:22][C:21]3([CH2:32][C:31](=[O:33])[C:30]4[C:25](=[CH:26][CH:27]=[C:28]([C:34]5[N:38]([CH3:39])[N:37]=[N:36][N:35]=5)[CH:29]=4)[O:24]3)[CH2:20][CH2:19]2)=[O:17])[CH:5]=1

Participants

4

Reactant 2

HCID 6328Methyl iodideHCID 178492643HCID 178492643, compound

Product 1

HCID 16042135HCID 16042135, compound

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

The sodium salt (15.7 mg) obtained in Example 18 was dissolved in 0.3 mL of DMF, 0.009 mL of methyl iodide was added to it, and the mixture was stirred at room temperature for 13 hours. The reaction mixture was concentrated, and the residue was diluted with ethyl acetate, washed with water and saturated brine in order, then dried over sodium sulfate, and concentrated. The residue was purified through silica gel chromatography (chloroform/methanol=10/1) to obtain 1′-[(4,8-dimethoxyquinolin-2-yl)carbonyl]-6-(1-methyltetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one (this is referred to as 1-isomer) and 1′-[(4,8-dimethoxyquinolin-2-yl)carbonyl]-6-(2-methyltetrazol-5-yl)spiro[chroman-2,4′-piperidin]-4-one (this is referred to as 2-isomer) both as colorless powders. 1-Isomer: 1H-NMR (CDCl3) δ: 8.20 (1H, d, J=2.3 Hz), 8.05 (1H, dd, J=8.5, 2.3 Hz), 7.78 (1H, d, J=8.4 Hz), 7.48 (1H, dd, J=8.4, 7.9 Hz), 7.25 (1H, d, J=8.5 Hz), 7.20 (1H, s), 7.09 (1H, d, J=7.9 Hz), 4.67-4.57 (1H, m), 4.29-4.18 (1H, m), 4.22 (3H, s), 4.09 (3H, s), 4.04 (3H, s), 3.69-3.58 (1H, m), 3.46-3.33 (1H, m), 2.91 (1H, d, J=16.8 Hz), 2.84 (1H, d, J=16.8 Hz), 2.30-2.20 (1H, m), 2.16-1.88 (3H, m). MS [M+H]+=515.2-Isomer: 1H-NMR (CDCl3) δ: 8.65 (1H, d, J=2.3 Hz), 8.29 (1H, dd, J=8.7, 2.3 Hz), 7.77 (1H, d, J=8.5 Hz), 7.47 (1H, dd, J=8.5, 7.6 Hz), 7.19 (1H, s), 7.15 (1H, d, J=8.7 Hz), 7.08 (1H, d, J=7.6 Hz), 4.65-4.54 (1H, m), 4.39 (3H, s), 4.23-4.13 (1H, m), 4.08 (3H, s), 4.03 (3H, s), 3.69-3.57 (1H, m), 3.46-3.33 (1H, m), 2.88 (1H, d, J=16.7 Hz), 2.80 (1H, d, J=16.7 Hz), 2.28-2.19 (1H, m), 2.15-2.05 (1H, m), 2.01-1.85 (2H, m). MS [M+H]+=515.

Workup

  1. concentrationThe reaction mixture was concentrated
  2. additionthe residue was diluted with ethyl acetate
  3. washwashed with water and saturated brine in order
  4. dry with materialdried over sodium sulfate
  5. concentrationconcentrated
  6. customThe residue was purified through silica gel chromatography (chloroform/methanol=10/1)

Sources & evidence

ORD record
ord-2fe011877899470bac83b30484f49e67
Source dataset
uspto-grants-2011_05
Patent number
US07935712B2

Reaction notes

Loading…