Hydrochloric Acid → (3S)-1-Acetyl-N-{(3S)-1-[(3-chloro-2-methylphenyl)sulfonyl]piperidin-3-yl}piperidine-3-carboxamide

HRID 656346Notes

Reaction equation

HRID 656346 reaction equation
[Cl:1][C:2]1[C:3]([CH3:33])=[C:4]([S:8]([N:11]2[CH2:16][CH2:15][CH2:14][C@H:13]([NH:17][C:18]([C@H:20]3[CH2:25][CH2:24][CH2:23][N:22]([C:26](OC(C)(C)C)=[O:27])[CH2:21]3)=[O:19])[CH2:12]2)(=[O:10])=[O:9])[CH:5]=[CH:6][CH:7]=1.Cl.[C:35](O)(C(F)(F)F)=O>O1CCOCC1.CO>[C:26]([N:22]1[CH2:23][CH2:24][CH2:25][C@H:20]([C:18]([NH:17][C@H:13]2[CH2:14][CH2:15][CH2:16][N:11]([S:8]([C:4]3[CH:5]=[CH:6][CH:7]=[C:2]([Cl:1])[C:3]=3[CH3:33])(=[O:9])=[O:10])[CH2:12]2)=[O:19])[CH2:21]1)(=[O:27])[CH3:35]

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 6422Trifluoroacetic acidHCID 58656262tert-Butyl (3S)-3-[((3S)-1-[(3-chloro-2-methylphenyl)sulfonyl]piperidin-3-ylamino)-carbonyl]piperidine-1-carboxylate

Product 1

HCID 11554020(3S)-1-Acetyl-N-{(3S)-1-[(3-chloro-2-methylphenyl)sulfonyl]piperidin-3-yl}piperidine-3-carboxamide

Reagents, catalysts & solvents 2

HCID 887MethanolSolventHCID 312751,4-DioxaneSolvent

Procedure

tert-Butyl (3S)-3-[((3S)-1-[(3-chloro-2-methylphenyl)sulfonyl]piperidin-3-ylamino)-carbonyl]-piperidine-1-carboxylate (10.0 mg, 200 μmol) was treated with 4.0 M of hydrogen chloride in 1,4-dioxane (0.5 mL) at rt for 1 h. The volatiles were removed in-vacuo and the residue was dissolved in acetonitrile (0.8 mL) and was treated with diisopropylethylamine (20.0 μL) and acetyl chloride (5.0 μL). The crude reaction mixture was diluted with MeOH (1.3 mL) and was adjusted to a pH of 2 using TFA and was purified by prep-HPLC to give the desired product. LCMS: (M+H)+=442.1/444.1.

Workup

  1. customThe volatiles were removed in-vacuo
  2. dissolutionthe residue was dissolved in acetonitrile (0.8 mL)
  3. additionwas treated with diisopropylethylamine (20.0 μL) and acetyl chloride (5.0 μL)
  4. customThe crude reaction mixture
  5. customwas purified by prep-HPLC

Sources & evidence

ORD record
ord-af285fc49d3a4407be18171ff947ad82
Source dataset
uspto-grants-2011_12
Patent number
US08071624B2

Reaction notes

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