Lithium hydroxide, monohydrate → HCID 59127134, compound

HRID 1989883Notes

Reaction equation

HRID 1989883 reaction equation
O.[OH-].[Li+].CC([Si](C)(C)[O:9][C:10]1[CH:11]=[C:12]([CH:21]=[C:22]([O:24][C@@H:25]([CH3:35])[CH2:26][O:27][Si:28]([C:31]([CH3:34])([CH3:33])[CH3:32])([CH3:30])[CH3:29])[CH:23]=1)[C:13]([NH:15][C:16]1[S:17][CH:18]=[CH:19][N:20]=1)=[O:14])(C)C>C1COCC1>[CH3:32][C:31]([Si:28]([CH3:30])([CH3:29])[O:27][CH2:26][C@@H:25]([O:24][C:22]1[CH:21]=[C:12]([CH:11]=[C:10]([OH:9])[CH:23]=1)[C:13]([NH:15][C:16]1[S:17][CH:18]=[CH:19][N:20]=1)=[O:14])[CH3:35])([CH3:33])[CH3:34]

Participants

4

Reactant 2

HCID 168937Lithium hydroxide, monohydrateHCID 536296183-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-5-[((1S)-2-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-1-methylethyl)oxy]-N-1,3-thiazol-2-ylbenzamide

Product 1

HCID 59127134HCID 59127134, compoundYield 73%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

An aqueous solution of lithium hydroxide monohydrate (0.304 g, 7.25 mmol) was added to a solution of 3-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-5-[((1S)-2-{[(1,1-dimethylethyl)(dimethyl)silyl]oxy}-1-methylethyl)oxy]-N-1,3-thiazol-2-ylbenzamide (1.552 g, 2.90 mmol) in THF (40 mL) and stirred at RT overnight. The THF was removed in vacuo and the residual solution adjusted to pH 7 by addition of 1N hydrochloric acid (7.25 mL). A gum formed, and the solution was filtered and the gum dissolved in methanol. The filtrate was partitioned with ethyl acetate (75 mL) and the organics washed with brine, dried (MgSO4), combined with the methanol solution and evaporated to a residue which was chromatographed on silica, eluting with 40% ethyl acetate in isohexane, to give the required product (0.865 g)

Workup

  1. customThe THF was removed in vacuo
  2. additionthe residual solution adjusted to pH 7 by addition of 1N hydrochloric acid (7.25 mL)
  3. customA gum formed
  4. filtrationthe solution was filtered
  5. dissolutionthe gum dissolved in methanol
  6. customThe filtrate was partitioned with ethyl acetate (75 mL)
  7. washthe organics washed with brine
  8. dry with materialdried (MgSO4)
  9. customevaporated to a residue which
  10. customwas chromatographed on silica
  11. washeluting with 40% ethyl acetate in isohexane

Sources & evidence

ORD record
ord-113e55796c24424abbac26ed17968d60
Source dataset
uspto-grants-2010_01
Patent number
US07642263B2

Reaction notes

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