Trifluoroacetic acid → (R)-(3-Aminopiperidin-1-yl)(2-(1-ethyl-5-methoxy-1H-pyrrolo[2,3-c]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazol-5-yl)methanone

HRID 2275042Notes

Reaction equation

HRID 2275042 reaction equation
C(OC(=O)[NH:7][C@@H:8]1[CH2:13][CH2:12][CH2:11][N:10]([C:14]([C:16]2[CH:38]=[CH:37][C:19]3[N:20]([CH3:36])[C:21]([C:23]4[N:33]([CH2:34][CH3:35])[C:26]5=[CH:27][N:28]=[C:29]([O:31][CH3:32])[CH:30]=[C:25]5[CH:24]=4)=[N:22][C:18]=3[CH:17]=2)=[O:15])[CH2:9]1)(C)(C)C.C(O)(C(F)(F)F)=O>ClCCl>[NH2:7][C@@H:8]1[CH2:13][CH2:12][CH2:11][N:10]([C:14]([C:16]2[CH:38]=[CH:37][C:19]3[N:20]([CH3:36])[C:21]([C:23]4[N:33]([CH2:34][CH3:35])[C:26]5=[CH:27][N:28]=[C:29]([O:31][CH3:32])[CH:30]=[C:25]5[CH:24]=4)=[N:22][C:18]=3[CH:17]=2)=[O:15])[CH2:9]1

Participants

4

Reactant 2

HCID 6422Trifluoroacetic acidHCID 118178619(R)-tert-Butyl(1-(2-(1-ethyl-5-methoxy-1H-pyrrolo[2,3-c]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazole-5-carbonyl)piperidin-3-yl)carbamate

Product 1

HCID 73052774(R)-(3-Aminopiperidin-1-yl)(2-(1-ethyl-5-methoxy-1H-pyrrolo[2,3-c]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazol-5-yl)methanoneYield 80.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a stirred solution of (R)-tert-butyl(1-(2-(1-ethyl-5-methoxy-1H-pyrrolo[2,3-c]pyridin-2-yl)-1-methyl-1H-benzo[d]imidazole-5-carbonyl)piperidin-3-yl)carbamate (106 mg, 0.199 mmol) in dichloromethane (DCM) (3 mL) was added TFA (3 mL, 38.9 mmol) dropwise with continuous stirring. The reaction was stirred at room temperature under nitrogen for 1 hr. LCMS showed the reaction was complete with no starting material remaining. The reaction mixture was concentrated in vacuo before being dissolved in MeOH and purified by SPE on sulfonic acid (SCX) 5 g, first washing with MeOH and then eluting using a 10% NH3/MeOH solution to give the free base of the product. The appropriate fractions were combined and evaporated in vacuo before being azeotroped with cHex and dried on the high vacuum line to give the required product (69 mg) as a white solid.

Workup

  1. concentrationThe reaction mixture was concentrated in vacuo
  2. dissolutionbefore being dissolved in MeOH
  3. custompurified by SPE on sulfonic acid (SCX) 5 g
  4. washfirst washing with MeOH
  5. washeluting
  6. customto give the free base of the product
  7. customevaporated in vacuo
  8. custombefore being azeotroped with cHex
  9. customdried on the high vacuum line

Sources & evidence

ORD record
ord-3968a378b769494fb2b0b94cdec36fb2
Source dataset
uspto-grants-2015_09
Patent number
US09127003B2

Reaction notes

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