Triethylamine → 7-{3-[1-(3-cyanophenylcarbamoyl)-pyrrolidin-2-yl]-benzoylamino}-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl ester

HRID 1524297Notes

Reaction equation

HRID 1524297 reaction equation
Cl.[CH2:2]([O:9][C:10]([N:12]1[CH2:21][CH2:20][C:19]2[C:14](=[CH:15][C:16]([NH:22][C:23](=[O:35])[C:24]3[CH:29]=[CH:28][CH:27]=[C:26]([CH:30]4[CH2:34][CH2:33][CH2:32][NH:31]4)[CH:25]=3)=[CH:17][CH:18]=2)[CH2:13]1)=[O:11])[C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.CCN(CC)CC.[C:43]([C:45]1[CH:46]=[C:47]([N:51]=[C:52]=[O:53])[CH:48]=[CH:49][CH:50]=1)#[N:44].[N-]=C=O>CN(C=O)C>[CH2:2]([O:9][C:10]([N:12]1[CH2:21][CH2:20][C:19]2[C:14](=[CH:15][C:16]([NH:22][C:23](=[O:35])[C:24]3[CH:29]=[CH:28][CH:27]=[C:26]([CH:30]4[CH2:34][CH2:33][CH2:32][N:31]4[C:52](=[O:53])[NH:51][C:47]4[CH:48]=[CH:49][CH:50]=[C:45]([C:43]#[N:44])[CH:46]=4)[CH:25]=3)=[CH:17][CH:18]=2)[CH2:13]1)=[O:11])[C:3]1[CH:4]=[CH:5][CH:6]=[CH:7][CH:8]=1

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 105034IsocyanateHCID 27333153-IsocyanatobenzonitrileHCID 666549657-(3-pyrrolidin-2-yl-benzoylamino)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl ester HCl

Product 1

HCID 666557477-{3-[1-(3-cyanophenylcarbamoyl)-pyrrolidin-2-yl]-benzoylamino}-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl esterYield 80.1%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 7-(3-pyrrolidin-2-yl-benzoylamino)-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl ester HCl (238 mg, 0.387 mmol) in DMF (5 mL) add Et3N (0.082 mL, 0.581 mmol) followed by 3-cyanophenyl isocyanate (69 mg, 0.464 mmol). Stir the solution at room temperature for 48 h. LCMS analysis indicates the presence of starting material. Add more isocyanate (69 mg, 0.464 mmol) and stir the reaction at room temperature 24 h more. Quench the reaction with sat. NH4Cl (100 mL) and extract with EtOAc (2×150 mL). Wash the organic layers with water (100 mL), dry (Na2SO4) and concentrate to an oil. Purify the crude product by silica gel chromatography eluting with 10% to 75% EtOAc/hexane to afford 186 mg 7-{3-[1-(3-cyanophenylcarbamoyl)-pyrrolidin-2-yl]-benzoylamino}-3,4-dihydro-1H-isoquinoline-2-carboxylic acid benzyl ester as a solid foam.

Workup

  1. stirringstir
  2. customthe reaction at room temperature 24 h more
  3. customQuench
  4. customthe reaction with sat. NH4Cl (100 mL)
  5. extractionextract with EtOAc (2×150 mL)
  6. washWash the organic layers with water (100 mL)
  7. dry with materialdry (Na2SO4)
  8. concentrationconcentrate to an oil
  9. customPurify the crude product by silica gel chromatography
  10. washeluting with 10% to 75% EtOAc/hexane

Sources & evidence

ORD record
ord-9215c195659e401d9bdad11b97d38591
Source dataset
uspto-grants-2015_07
Patent number
US09079880B2

Reaction notes

Loading…