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Lithium Hydroxide → Gsk-2636771

HRID 539187
Notes
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Reaction equation

HRID 539187 reaction equation
[Li+].[OH-].[CH3:3][C:4]1[N:8]([CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([C:16]([F:19])([F:18])[F:17])[C:11]=2[CH3:20])[C:7]2[CH:21]=[C:22]([N:29]3[CH2:34][CH2:33][O:32][CH2:31][CH2:30]3)[CH:23]=[C:24]([C:25]([O:27]C)=[O:26])[C:6]=2[N:5]=1>C1COCC1>[CH3:3][C:4]1[N:8]([CH2:9][C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([C:16]([F:18])([F:17])[F:19])[C:11]=2[CH3:20])[C:7]2[CH:21]=[C:22]([N:29]3[CH2:30][CH2:31][O:32][CH2:33][CH2:34]3)[CH:23]=[C:24]([C:25]([OH:27])=[O:26])[C:6]=2[N:5]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 3939Lithium HydroxideHCID 56959828methyl 2-methyl-1-{[2-methyl-3-(trifluoromethyl)phenyl]methyl}-6-(4-morpholinyl)-1H-benzimidazole-4-carboxylate

Product 1

HCID 56949517Gsk-2636771Yield 88%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
50 °C

Procedure

An aqueous solution of 2 N LiOH (1.2 mL) was added to a solution of methyl 2-methyl-1-{[2-methyl-3-(trifluoromethyl)phenyl]methyl}-6-(4-morpholinyl)-1H-benzimidazole-4-carboxylate, prepared as described in Example 30 (180 mg, 0.4 mmol) in THF (10 mL) and stirred at 50° C. for 1 h. When TLC showed no starting material remaining, the mixture was cooled to rt and THF was removed under reduced pressure. The pH of the mixture was acidified to pH 3. The suspension was filtered and the filtrate was collected, and washed with water (10 mL) to give the product as a white solid (152 mg, yield 88%). 1H NMR (300 MHz, DMSO-d6): δ ppm 2.46 (s, 3H), 2.54 (s, 3H), 3.10 (t, 4H, J=4.8 Hz), 3.73 (t, 4H, J=4.8 Hz), 5.63 (s, 2H), 6.37 (d, 1H, J=7.8 Hz), 7.26 (t, 1H, J=7.8 Hz), 7.35 (d, 1H, J=2.4 Hz), 7.44 (d, 1H, J=2.4 Hz), 7.62 (d, 1H, J=7.8 Hz); LC-MS: m/e=434 [M+1]+.

Workup

  1. customprepared
  2. temperaturethe mixture was cooled to rt
  3. customTHF was removed under reduced pressure
  4. filtrationThe suspension was filtered
  5. customthe filtrate was collected
  6. washwashed with water (10 mL)

Sources & evidence

ORD record
ord-49b377a7ceff4789a32ec0e15436d803
Source dataset
uspto-grants-2014_10
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08865912B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes