3-Aminopyridine → (2R,3S,4R,5S)-4-(4-Chloro-2-fluoro-phenyl)-3-(3-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carboxylic acid pyridin-3-ylamide

HRID 1807312Notes

Reaction equation

HRID 1807312 reaction equation
FC(F)(F)C(O)=O.[Cl:8][C:9]1[C:10]([F:38])=[C:11]([C@@H:15]2[C@:19]([C:22]3[CH:27]=[CH:26][C:25]([Cl:28])=[CH:24][C:23]=3[F:29])([C:20]#[N:21])[C@H:18]([CH2:30][C:31]([CH3:34])([CH3:33])[CH3:32])[NH:17][C@H:16]2[C:35]([OH:37])=O)[CH:12]=[CH:13][CH:14]=1.CCN(C(C)C)C(C)C.C1(P(Cl)(C2C=CC=CC=2)=O)C=CC=CC=1.[NH2:63][C:64]1[CH:65]=[N:66][CH:67]=[CH:68][CH:69]=1>C(Cl)Cl>[N:66]1[CH:67]=[CH:68][CH:69]=[C:64]([NH:63][C:35]([C@H:16]2[C@H:15]([C:11]3[CH:12]=[CH:13][CH:14]=[C:9]([Cl:8])[C:10]=3[F:38])[C@:19]([C:22]3[CH:27]=[CH:26][C:25]([Cl:28])=[CH:24][C:23]=3[F:29])([C:20]#[N:21])[C@H:18]([CH2:30][C:31]([CH3:32])([CH3:34])[CH3:33])[NH:17]2)=[O:37])[CH:65]=1

Participants

6

Reactant 4

HCID 100093-AminopyridineHCID 73910Diphenylphosphinic chlorideHCID 81531DiisopropylethylamineHCID 86642695CID 86642695

Product 1

HCID 53358570(2R,3S,4R,5S)-4-(4-Chloro-2-fluoro-phenyl)-3-(3-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carboxylic acid pyridin-3-ylamide

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

In a 25 mL round-bottomed flask, (2R,3S,4R,5S)-3-(3-chloro-2-fluorophenyl)-4-(4-chloro-2-fluorophenyl)-4-cyano-5-neopentylpyrrolidine-2-carboxylic acid compound with 2,2,2-trifluoroacetic acid (1:1) (200 mg, 344 μmol, Eq: 1.00), was combined with CH2Cl2 (3 ml) to give a colorless solution. DIPEA (240 μl, 1.38 mmol, Eq: 4) and diphenylphosphinic chloride (244 mg, 1.03 mmol, Eq: 3) were added and the reaction was stirred at RT for 20 minutes. 3-Amino-pyridine (38.9 mg, 413 μmol, Eq: 1.2) was added and the reaction mixture was stirred at RT overnight. The crude reaction mixture was concentrated in vacuum. The crude material was purified by flash chromatography (silica gel, 40 g, 2% to 5% MeOH in DCM) to give a white solid as the product. 185 mg. MS (ES+) m/z Calcd: [(M+H)+]: 543. found: 543.

Workup

  1. customto give a colorless solution
  2. stirringthe reaction mixture was stirred at RT overnight
  3. customThe crude reaction mixture
  4. concentrationwas concentrated in vacuum
  5. customThe crude material was purified by flash chromatography (silica gel, 40 g, 2% to 5% MeOH in DCM)
  6. customto give a white solid as the product

Sources & evidence

ORD record
ord-d892c5e2af0c418fa8ccbbf706a08aba
Source dataset
uspto-grants-2013_01
Patent number
US08354444B2

Reaction notes

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