Pyridine → HCID 59199363, compound

HRID 2089536Notes

Reaction equation

HRID 2089536 reaction equation
[CH:1]([O:4][C:5]([C:7]1[N:8]([CH:12]2[C:21]3[C:16](=[CH:17][CH:18]=[C:19]([NH2:22])[CH:20]=3)[CH2:15][CH2:14][CH2:13]2)[CH:9]=[N:10][CH:11]=1)=[O:6])([CH3:3])[CH3:2].N1C=CC=CC=1.[CH3:29][S:30](Cl)(=[O:32])=[O:31]>ClCCl>[CH:1]([O:4][C:5]([C:7]1[N:8]([CH:12]2[C:21]3[C:16](=[CH:17][CH:18]=[C:19]([NH:22][S:30]([CH3:29])(=[O:32])=[O:31])[CH:20]=3)[CH2:15][CH2:14][CH2:13]2)[CH:9]=[N:10][CH:11]=1)=[O:6])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 1049PyridineHCID 31297Methanesulfonyl chlorideHCID 59199337HCID 59199337, compound

Product 1

HCID 59199363HCID 59199363, compound

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 3-(7-amino-1,2,3,4-tetrahydro-naphthalen-1-yl)-3H-imidazole-4-carboxylic acid isopropyl ester, which can be prepared as described as in Example 45, (0.408 g, 1.36 mmol) and pyridine (0.162 g, 2.04 mmol) in dichloromethane (4 mL) at 0° C. is added methanesulfonyl chloride (0.168 g, 1.47 mmol) and the reaction is stirred for 2.5 hours. The solution is then washed with 10% aqueous HCl and water and the combined aqueous phases are extracted with ethyl acetate. The combined organic phases are dried over sodium sulfate, filtered and concentrated to give a residue, which is purified by silica gel chromatography (dichloromethane-methanol mixtures) to give 3-(7-methanesulfonylamino-1,2,3,4-tetrahydro-naphthalen-1-yl)-3H-imidazole-4-carboxylic acid isopropyl ester; MS: (ESI) m/z 378.2 (M+H)+; 1H NMR (400 MHz, MeOD) δ ppm 1.38 (d, J=6.3 Hz, 3 H), 1.40 (d, J=6.3 Hz, 3 H), 1.84-1.93 (m, 2 H), 2.19-2.33 (m, 2 H), 2.87 (dt, J=16.9, 6.6 Hz, 1 H), 2.88 (s, 3 H), 3.01 (dt, J=16.9, 6.3 Hz, 1 H), 5.24 (sept, J=6.3 Hz, 1 H), 6.32 (t, J=6.1 Hz, 1 H), 6.81 (d, J=2.0 Hz, 1 H), 7.21 (dd, J=8.3, 2.0 Hz, 1 H), 7.26 (d, J=8.3 Hz, 1 H), 7.51 (s, 1 H), 7.75 (d, J=1.0 Hz, 1 H).

Workup

  1. washThe solution is then washed with 10% aqueous HCl and water
  2. extractionthe combined aqueous phases are extracted with ethyl acetate
  3. dry with materialThe combined organic phases are dried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customto give a residue, which
  7. customis purified by silica gel chromatography (dichloromethane-methanol mixtures)

Sources & evidence

ORD record
ord-972b49daea5946079f7554a2a58a1ae1
Source dataset
uspto-grants-2013_05
Patent number
US08436035B2

Reaction notes

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