Lithium diisopropylamide → HCID 178515678, compound

HRID 1672730Notes

Reaction equation

HRID 1672730 reaction equation
[F:1][C@H:2]1[CH2:7][CH2:6][C@H:5]([N:8]2[CH2:12][CH2:11][CH2:10][C:9]2=[O:13])[CH2:4][CH2:3]1.[Li+].CC([N-]C(C)C)C.[Cl:22][C:23]1[CH:24]=[C:25]([O:36][S:37]([C:40]([F:43])([F:42])[F:41])(=[O:39])=[O:38])[CH:26]=[C:27]([Cl:35])[C:28]=1[CH2:29]OS(C)(=O)=O>C1COCC1>[Cl:22][C:23]1[CH:24]=[C:25]([O:36][S:37]([C:40]([F:42])([F:43])[F:41])(=[O:39])=[O:38])[CH:26]=[C:27]([Cl:35])[C:28]=1[CH2:29][CH:10]1[CH2:11][CH2:12][N:8]([C@H:5]2[CH2:6][CH2:7][C@H:2]([F:1])[CH2:3][CH2:4]2)[C:9]1=[O:13]

Participants

5

Reactant 3

HCID 2724682Lithium diisopropylamideHCID 86634570Trifluoro-methanesulfonic acid 3,5-dichloro-4-methanesulfonyloxymethyl-phenyl esterHCID 178516222HCID 178516222, compound

Product 1

HCID 178515678HCID 178515678, compound

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent2×

Procedure

To a solution of trans-1-(4-fluoro-cyclohexyl)-pyrrolidin-2-one (252 mg, 1.36 mmol) in 13 mL dry THF, add 1.09 mL of 2M LDA (1.2 eq.) in THF dropwise at −78° C. Then, add 821 mg of trifluoro-methanesulfonic acid 3,5-dichloro-4-methanesulfonyloxymethyl-phenyl ester (1.5 eq) at −78° C. Allow the resulting solution to stand at room temp for overnight. Quench the mixture with saturated aqueous NH4Cl and extract with CH2Cl2. Wash the organic layer with water, then brine, and dry over Na2SO4, filter and concentrate. Purify the crude material by chromatography to afford the title compound: mass spectrum (m/z): 358 (M+1).

Workup

  1. customQuench the mixture with saturated aqueous NH4Cl
  2. extractionextract with CH2Cl2
  3. washWash the organic layer with water
  4. dry with materialbrine, and dry over Na2SO4
  5. filtrationfilter
  6. concentrationconcentrate
  7. customPurify the crude material by chromatography

Sources & evidence

ORD record
ord-c1077c8b0b99418bafd9e0bbb8aaf073
Source dataset
uspto-grants-2011_08
Patent number
US07998999B2

Reaction notes

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