Boron trifluoride etherate → HCID 86689053, compound

HRID 75136Notes

Reaction equation

HRID 75136 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[CH2:13][CH2:12][N:11]([CH:14]3[CH2:19][CH2:18][CH2:17][CH:16]([C:20](N)=[O:21])[CH2:15]3)[CH2:10][CH2:9]2)=[CH:4][C:3]=1[NH:23][C@@H:24]([C:26]1[CH:31]=[CH:30][C:29]([Cl:32])=[CH:28][C:27]=1[Cl:33])[CH3:25].[BH4-].[Na+].B(F)(F)F.CCOCC>C1COCC1>[Cl:1][C:2]1[CH:7]=[CH:6][C:5]([N:8]2[CH2:9][CH2:10][N:11]([CH:14]3[CH2:19][CH2:18][CH2:17][CH:16]([CH2:20][OH:21])[CH2:15]3)[CH2:12][CH2:13]2)=[CH:4][C:3]=1[NH:23][C@@H:24]([C:26]1[CH:31]=[CH:30][C:29]([Cl:32])=[CH:28][C:27]=1[Cl:33])[CH3:25]

Participants

5

Reactant 3

HCID 8000Boron trifluoride etherateHCID 4311764Sodium borohydrideHCID 866890543-(4-(4-chloro-3-((R)-1-(2,4-dichlorophenyl)ethylamino)phenyl)piperazin-1-yl)cyclohexanecarboxamide

Product 1

HCID 86689053HCID 86689053, compoundYield 10%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 3-(4-(4-chloro-3-((R)-1-(2,4-dichlorophenyl)ethylamino)phenyl)piperazin-1-yl)cyclohexanecarboxylic acid (prepared as illustrated in Example 15, 0.077 g, 0.15 mmol) in THF (1 mL) at 0° C. was added sodium borohydride (NaBH4) (0.017 g, 0.5 mmol) and boron trifluoride diethyl etherate (BF3.Et2O) (0.1 mL, 0.8 mmol). The reaction mixture was then stirred at room temperature for 2 h. The reaction was quenched with aqueous saturated sodium bicarbonate and extracted with dichloromethane. The organic layer was dried (Na2SO4), filtered, and concentrated in vacuo. The resulting crude was purified by flash chromatography (SiO2, 10-40% ethyl acetate in hexanes) to afford the desired product as a white solid (0.0074 g, 0.015 mmol, 10%). 1H NMR (400 MHz, CDCl3) δ 7.37-7.32 (m, 2H), 7.17 (dd, J=2.0, 8.0 Hz, 1H), 7.06 (d, J=8.8 Hz, 1H), 6.17 (dd, J=2.8, 8.8 Hz, 1H), 5.78 (d, J=2.4 Hz, 1H), 4.90 (dd, J=5.6, 6.4 Hz, 1H), 4.65 (d, J=5.2 Hz, 1H), 3.54 (d, J=7.2 Hz, 2 μl), 3.03-2.99 (m, 3H), 2.59 (m, 3H), 2.39-2.36 (m, 1H), 2.05-1.95 (m, 1H), 1.75-1.34 (m, 14H); MS: (ES) m/z calculated for C25H33Cl3N3O [M+H]+ 496.2. found 496.3.

Workup

  1. customThe reaction was quenched with aqueous saturated sodium bicarbonate
  2. extractionextracted with dichloromethane
  3. dry with materialThe organic layer was dried (Na2SO4)
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe resulting crude was purified by flash chromatography (SiO2, 10-40% ethyl acetate in hexanes)

Sources & evidence

ORD record
ord-1c362a34c9194853afa3d7cb2e225a55
Source dataset
uspto-grants-2014_09
Patent number
US08835419B2

Reaction notes

Loading…