Lithium hydroxide, monohydrate → HCID 178524864, compound

HRID 2169380Notes

Reaction equation

HRID 2169380 reaction equation
C([O:5][C:6]([C:8]1[C:13]([O:14][CH2:15][C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)=[C:12]([OH:22])[N:11]=[C:10]([CH2:23][C:24]2([C:29]3[C:38]4[C:33](=[CH:34][CH:35]=[CH:36][CH:37]=4)[CH:32]=[CH:31][CH:30]=3)[CH2:28][CH2:27][CH2:26][CH2:25]2)[N:9]=1)=[O:7])(C)(C)C.O[Li].O>O1CCCC1.O>[CH2:15]([O:14][C:13]1[C:8]([C:6]([OH:7])=[O:5])=[N:9][C:10]([CH2:23][C:24]2([C:29]3[C:38]4[C:33](=[CH:34][CH:35]=[CH:36][CH:37]=4)[CH:32]=[CH:31][CH:30]=3)[CH2:28][CH2:27][CH2:26][CH2:25]2)=[N:11][C:12]=1[OH:22])[C:16]1[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=1

Participants

5

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 178450804HCID 178450804, compound

Product 1

HCID 178524864HCID 178524864, compoundYield 76.3%

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 8028TetrahydrofuranSolvent2×

Procedure

To a solution of 5-benzyloxy-6-hydroxy-2-(1-naphthalen-1-yl-cyclopentylmethyl)-pyrimidine-4-carboxylic acid tert-butyl ester (344) (3.9 g, 7.64 mmol) in tetrahydrofuran (60 mL) and water (12 mL) was added LiOH.H2O (3.2 g, 76.4 mmol) and the reaction mixture heated to reflux for 20 h (the reaction was monitored by LC-MS), tetrahydrofuran was removed from the reaction mixture under vacuum and the residue was diluted with water (50 mL). The aqueous layer was washed with ethyl acetate (2×50 mL) and then acidified with 1N HCl to pH 3. A white solid was separated by filtration and dried in vacuum to get pure 5-benzyloxy-6-hydroxy-2-(1-naphthalen-1-yl-cyclopentylmethyl)-pyrimidine-4-carboxylic acid (345) (2.65 g, 76%) as a white solid.

Workup

  1. temperaturethe reaction mixture heated
  2. temperatureto reflux for 20 h (the reaction
  3. customwas removed from the reaction mixture under vacuum
  4. additionthe residue was diluted with water (50 mL)
  5. washThe aqueous layer was washed with ethyl acetate (2×50 mL)
  6. customA white solid was separated by filtration
  7. customdried in vacuum

Sources & evidence

ORD record
ord-eec40fda5bca4a34ab44ecae620599ec
Source dataset
uspto-grants-2015_06
Patent number
US09045486B2

Reaction notes

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