Acetic Acid → [(3R,4S)-3-[(R)-1-(5-Chloro-pyridin-2-yloxy)-2-hydroxy-ethyl]-4-(3,4-dichloro-phenyl)-pyrrolidin-1-yl]-(2-methyl-pyrimidin-5-yl)-methanone

HRID 906938Notes

Reaction equation

HRID 906938 reaction equation
C([Si](C)(C)[O:6][CH2:7][C@@H:8]([C@@H:17]1[C@@H:21]([C:22]2[CH:27]=[CH:26][C:25]([Cl:28])=[C:24]([Cl:29])[CH:23]=2)[CH2:20][N:19]([C:30]([C:32]2[CH:37]=C(C)N=[N:34][CH:33]=2)=[O:31])[CH2:18]1)[O:9][C:10]1[CH:15]=[CH:14][C:13]([Cl:16])=[CH:12][N:11]=1)(C)(C)C.C(O)(=O)C.CC[CH2:47][CH2:48][N+:49](CCCC)(CCCC)CCCC.[F-]>C1COCC1.C(OCC)(=O)C>[Cl:16][C:13]1[CH:14]=[CH:15][C:10]([O:9][C@H:8]([C@@H:17]2[C@@H:21]([C:22]3[CH:27]=[CH:26][C:25]([Cl:28])=[C:24]([Cl:29])[CH:23]=3)[CH2:20][N:19]([C:30]([C:32]3[CH:33]=[N:34][C:48]([CH3:47])=[N:49][CH:37]=3)=[O:31])[CH2:18]2)[CH2:7][OH:6])=[N:11][CH:12]=1

Participants

6

Reactant 3

HCID 176Acetic AcidHCID 2724141Tetrabutylammonium FluorideHCID 67131632[(3R,4S)-3-[(R)-2-(tert-Butyl-dimethyl-silanyloxy)-1-(5-chloro-pyridin-2-yloxy)-ethyl]-4-(3,4-dichloro-phenyl)-pyrrolidin-1-yl]-(6-methyl-pyridazin-4-yl)-methanone

Product 1

HCID 57576327[(3R,4S)-3-[(R)-1-(5-Chloro-pyridin-2-yloxy)-2-hydroxy-ethyl]-4-(3,4-dichloro-phenyl)-pyrrolidin-1-yl]-(2-methyl-pyrimidin-5-yl)-methanoneYield 91%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolventHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of [(3R,4S)-3-[(R)-2-(tert-butyl-dimethyl-silanyloxy)-1-(5-chloro-pyridin-2-yloxy)-ethyl]-4-(3,4-dichloro-phenyl)-pyrrolidin-1-yl]-(6-methyl-pyridazin-4-yl)-methanone (0.074 g, 0.119 mmol) dissolved in THF (4 mL) was added 0.014 mL (0.24 mmol) of acetic acid and 0.119 mL of TBAF (1.0M in THF). The reaction mixture was stirred over night at room temperature. The mixture was diluted with ethyl acetate and washed with water and aq. sodium bicarbonate solution subsequently. The separated organic phase was dried over sodium sulfate and concentrated in vaccuo after filtration. The residue was purified by TLC (SiO2, MeOH/DCM, 1:10) yielded 55 mg (91%) of the title compound as a light yellow oil. ES-MS m/e: 507.1 (M+H+).

Workup

  1. washwashed with water and aq. sodium bicarbonate solution subsequently
  2. dry with materialThe separated organic phase was dried over sodium sulfate
  3. concentrationconcentrated in vaccuo
  4. filtrationafter filtration
  5. customThe residue was purified by TLC (SiO2, MeOH/DCM, 1:10)

Sources & evidence

ORD record
ord-d67a27c5330c4d67a0c725c5d6708940
Source dataset
uspto-grants-2011_09
Patent number
US08012998B2

Reaction notes

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