Pyrrolidine → 2-{1-[(4S,5R)-2-(6-tert-Butyl-4-ethoxy-pyridin-3-yl)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-imidazole-1-carbonyl]-piperidin-4-yl}-1-pyrrolidin-1-yl-ethanone

HRID 1894481Notes

Reaction equation

HRID 1894481 reaction equation
[C:1]([C:5]1[N:10]=[CH:9][C:8]([C:11]2[N:12]([C:32]([N:34]3[CH2:39][CH2:38][CH:37]([CH2:40][C:41]([OH:43])=O)[CH2:36][CH2:35]3)=[O:33])[C@@:13]([C:25]3[CH:30]=[CH:29][C:28]([Cl:31])=[CH:27][CH:26]=3)([CH3:24])[C@@:14]([C:17]3[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=3)([CH3:16])[N:15]=2)=[C:7]([O:44][CH2:45][CH3:46])[CH:6]=1)([CH3:4])([CH3:3])[CH3:2].ON1C2C=[CH:54][CH:55]=[CH:56][C:51]=2[N:50]=N1.C(N(C(C)C)CC)(C)C.N1CCCC1>CN(C)C=O>[C:1]([C:5]1[N:10]=[CH:9][C:8]([C:11]2[N:12]([C:32]([N:34]3[CH2:39][CH2:38][CH:37]([CH2:40][C:41]([N:50]4[CH2:51][CH2:56][CH2:55][CH2:54]4)=[O:43])[CH2:36][CH2:35]3)=[O:33])[C@@:13]([C:25]3[CH:26]=[CH:27][C:28]([Cl:31])=[CH:29][CH:30]=3)([CH3:24])[C@@:14]([C:17]3[CH:22]=[CH:21][C:20]([Cl:23])=[CH:19][CH:18]=3)([CH3:16])[N:15]=2)=[C:7]([O:44][CH2:45][CH3:46])[CH:6]=1)([CH3:3])([CH3:4])[CH3:2]

Participants

6

Reactant 4

HCID 31268PyrrolidineHCID 757711-HydroxybenzotriazoleHCID 81531DiisopropylethylamineHCID 57670162{1-[(4S,5R)-2-(6-tert-butyl-4-ethoxy-pyridin-3-yl)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-imidazole-1-carbonyl]-piperidin-4-yl}-acetic acid

Product 1

HCID 576699882-{1-[(4S,5R)-2-(6-tert-Butyl-4-ethoxy-pyridin-3-yl)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-imidazole-1-carbonyl]-piperidin-4-yl}-1-pyrrolidin-1-yl-ethanoneYield 89.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a suspension of {1-[(4S,5R)-2-(6-tert-butyl-4-ethoxy-pyridin-3-yl)-4,5-bis-(4-chloro-phenyl)-4,5-dimethyl-4,5-dihydro-imidazole-1-carbonyl]-piperidin-4-yl}-acetic acid (75.0 mg, 0.112 mmole) in dimethylformamide (6 mL) were added successively 1-hydroxybenzotriazole (23.0 mg, 0.169 mmole, Chem-Impex), N,N,N′,N′-tetramethyl-O-(1H-benzotriazol-1-yl)uranium hexafluorophosphate (64.0 mg, 0.169 mmole, Aldrich) and diisopropylethylamine (58 mg, 0.448 mmole). The mixture was stirred for 15 min before pyrrolidine (12.0 mg, 0.169 mmole, Aldrich) was added. The reaction mixture was allowed to stir for 2 h before concentrated under reduced pressure. The residue was dissolved in ethyl acetate and washed with 1 N sodium hydroxide, brine, dried and concentrated. The crude residue was purified by flash column chromatography (silica gel, eluting with a gradient of 1-10% methanol in methylene chloride) to give the title compound (71.8 mg, 89% yield). HR-MS (ES, m/z) calculated for C40H50Cl2N5O3 [(M+H)+] 718.3285, observed 718.328.

Workup

  1. additionwas added
  2. concentrationbefore concentrated under reduced pressure
  3. dissolutionThe residue was dissolved in ethyl acetate
  4. washwashed with 1 N sodium hydroxide, brine
  5. customdried
  6. concentrationconcentrated
  7. customThe crude residue was purified by flash column chromatography (silica gel
  8. washeluting with a gradient of 1-10% methanol in methylene chloride)

Sources & evidence

ORD record
ord-005ea041486b4f1591995a61190abebd
Source dataset
uspto-grants-2013_08
Patent number
US08513239B2

Reaction notes

Loading…