Dimethylformamide → (R)-N-(4-Chloro-3-(5-oxo-1-(4-(trifluoromethyl)phenyl)-4,5-dihydro-1H-1,2,4-triazol-3-yl)benzyl)tetrahydrofuran-2-carboxamide

HRID 59509Notes

Reaction equation

HRID 59509 reaction equation
[NH2:1][CH2:2][C:3]1[CH:4]=[CH:5][C:6]([Cl:25])=[C:7]([C:9]2[NH:13][C:12](=[O:14])[N:11]([C:15]3[CH:20]=[CH:19][C:18]([C:21]([F:24])([F:23])[F:22])=[CH:17][CH:16]=3)[N:10]=2)[CH:8]=1.CN(C=O)C.CN(C(ON1N=NC2C=CC=CC1=2)=[N+](C)C)C.[B-](F)(F)(F)F.[O:53]1[CH2:57][CH2:56][CH2:55][C@@H:54]1[C:58](O)=[O:59]>C1COCC1>[Cl:25][C:6]1[CH:5]=[CH:4][C:3]([CH2:2][NH:1][C:58]([C@H:54]2[CH2:55][CH2:56][CH2:57][O:53]2)=[O:59])=[CH:8][C:7]=1[C:9]1[NH:13][C:12](=[O:14])[N:11]([C:15]2[CH:16]=[CH:17][C:18]([C:21]([F:24])([F:23])[F:22])=[CH:19][CH:20]=2)[N:10]=1

Participants

6

Reactant 4

HCID 6228DimethylformamideHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 2734707Tetrahydro-2-furoic acid, (+)-HCID 1364923713-(5-(aminomethyl)-2-chlorophenyl)-1-(4-(trifluoromethyl)phenyl)-1H-1,2,4-triazol-5(4H)-one

Product 1

HCID 136246024(R)-N-(4-Chloro-3-(5-oxo-1-(4-(trifluoromethyl)phenyl)-4,5-dihydro-1H-1,2,4-triazol-3-yl)benzyl)tetrahydrofuran-2-carboxamideYield 28.3%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of 3-(5-(aminomethyl)-2-chlorophenyl)-1-(4-(trifluoromethyl)phenyl)-1H-1,2,4-triazol-5(4H)-one (Intermediate-63, 0.070 g, 0.189 mmol) in dry THF: DMF (4:1 mL) was added TBTU (0.182 g, 0.567 mmol) and TEA (3 mL) and stirred for 1 h under nitrogen atmosphere. To the reaction mixture (R)-(+)tetrahydro-2-furoic acid (0.032 g, 0.283 mmol) was added and stirred for 18 h at room temperature. The reaction mass was quenched in water, extracted with ethyl acetate and concentrated to afford crude product which was purified by column chromatography eluting with MeOH:DCM to afford 0.025 g of the desired title product. 1H NMR (400 MHz, DMSO d6): δ 1.23 (s, 2H), 1.74-1.92 (m, 3H), 2.09-2.24, (m, 1H), 3.75-3.80 (m, 1H), 3.89-3.94 (m, 1H), 4.26-4.37 (m, 3H), 7.43-7.45 (d, J=8.4 Hz, 1H), 7.61-7.63 (d, J=8.4 Hz, 2H), 7.85-7.87 (d, J=8.8 Hz, 2H), 8.19-8.21 (d, J=8.8 Hz, 2H), 8.50-8.53 (m, 1H), 12.71 (br s, 1H); MS (m/z): 465.55 (M−H−).

Workup

  1. stirringstirred for 18 h at room temperature
  2. customThe reaction mass was quenched in water
  3. extractionextracted with ethyl acetate
  4. concentrationconcentrated
  5. customto afford crude product which
  6. customwas purified by column chromatography
  7. washeluting with MeOH

Sources & evidence

ORD record
ord-cd30baa8ee9c4ddfa91cd1ca01f8da78
Source dataset
uspto-grants-2016_09
Patent number
US09439890B2

Reaction notes

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