1,2-Dichloroethane → (R)-3-[N'-(5-Acetyl-2H-pyrazole-3-carbonyl)-N-(5'-chloro-2'-fluorobiphenyl-4-ylmethyl)hydrazino]-2-hydroxypropionic Acid 2,2-Difluoropropyl Ester

HRID 541542Notes

Reaction equation

HRID 541542 reaction equation
[C:1]([C:4]1[CH:5]=[C:6]([C:9]([NH:11][N:12]([CH2:28][C@@H:29]([OH:33])[C:30]([OH:32])=[O:31])[CH2:13][C:14]2[CH:19]=[CH:18][C:17]([C:20]3[CH:25]=[C:24]([Cl:26])[CH:23]=[CH:22][C:21]=3[F:27])=[CH:16][CH:15]=2)=[O:10])[NH:7][N:8]=1)(=[O:3])[CH3:2].C1C=CC2N(O)N=NC=2C=1.C(Cl)CCl.C(Cl)Cl.[F:51][C:52]([F:56])([CH3:55])[CH2:53]O>>[F:51][C:52]([F:56])([CH3:55])[CH2:53][O:31][C:30](=[O:32])[C@H:29]([OH:33])[CH2:28][N:12]([CH2:13][C:14]1[CH:19]=[CH:18][C:17]([C:20]2[CH:25]=[C:24]([Cl:26])[CH:23]=[CH:22][C:21]=2[F:27])=[CH:16][CH:15]=1)[NH:11][C:9]([C:6]1[NH:7][N:8]=[C:4]([C:1](=[O:3])[CH3:2])[CH:5]=1)=[O:10]

Participants

6

Reactant 5

HCID 111,2-DichloroethaneHCID 6344DichloromethaneHCID 757711-HydroxybenzotriazoleHCID 133948182,2-DifluoropropanolHCID 86705116(R)-3-[N'-(5-Acetyl-2H-pyrazole-3-carbonyl)-N-(5'-chloro-2'-fluorobiphenyl-4-ylmethyl)hydrazino]-2-hydroxypropionic acid

Product 1

HCID 117669069(R)-3-[N'-(5-Acetyl-2H-pyrazole-3-carbonyl)-N-(5'-chloro-2'-fluorobiphenyl-4-ylmethyl)hydrazino]-2-hydroxypropionic Acid 2,2-Difluoropropyl EsterYield 78%

Procedure

(R)-3-[N′-(5-Acetyl-2H-pyrazole-3-carbonyl)-N-(5′-chloro-2′-fluorobiphenyl-4-ylmethyl)hydrazino]-2-hydroxypropionic acid (15.0 mg, 32 μmol), HOBt (12.8 mg, 95 μmol) and EDC (16.8 μL, 95 μmol) were combined in DCM (121 μL, 1.9 mmol) and stirred for 10 minutes. 2,2-Difluoropropanol (24.3 mg, 253 μmol) was added and the resulting mixture was stirred at room temperature until the reaction was complete (≈48 hours). The mixture was evaporated under reduced pressure and the product was purified (reverse phase column) to yield the title compound (13.8 mg, purity 96%) as a TFA salt. MS m/z [M+H]+ calc'd for C25H24ClF3N4O5, 553.14. found 553.1.

Workup

  1. stirringthe resulting mixture was stirred at room temperature until the reaction
  2. custom(≈48 hours)
  3. customThe mixture was evaporated under reduced pressure
  4. customthe product was purified (reverse phase column)

Sources & evidence

ORD record
ord-f621a80f0781408c83d5a90208f5add4
Source dataset
uspto-grants-2014_10
Patent number
US08871792B2

Reaction notes

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