Tetrabutylammonium Fluoride → 5-(2-Chloro-6-fluorophenyl)-2-(4-{[2-chloro-4-(trifluoromethyl)phenyl]ethynyl}phenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one

HRID 59424Notes

Reaction equation

HRID 59424 reaction equation
[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[C:9]1[NH:10][C:11](=[O:22])[N:12]([C:14]2[CH:19]=[CH:18][C:17]([C:20]#[CH:21])=[CH:16][CH:15]=2)[N:13]=1.[Cl:23][C:24]1[CH:29]=[C:28]([C:30]([F:33])([F:32])[F:31])[CH:27]=[CH:26][C:25]=1I.CCCC[N+](CCCC)(CCCC)CCCC.[F-]>Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1.CS(C)=O>[Cl:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([F:8])[C:3]=1[C:9]1[NH:10][C:11](=[O:22])[N:12]([C:14]2[CH:19]=[CH:18][C:17]([C:20]#[C:21][C:25]3[CH:26]=[CH:27][C:28]([C:30]([F:33])([F:32])[F:31])=[CH:29][C:24]=3[Cl:23])=[CH:16][CH:15]=2)[N:13]=1

Participants

6

Reactant 3

HCID 2724141Tetrabutylammonium FluorideHCID 27366123-Chloro-4-iodobenzotrifluorideHCID 1366448585-(2-chloro-6-fluorophenyl)-2-(4-ethynylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one

Product 1

HCID 1364924695-(2-Chloro-6-fluorophenyl)-2-(4-{[2-chloro-4-(trifluoromethyl)phenyl]ethynyl}phenyl)-2,4-dihydro-3H-1,2,4-triazol-3-oneYield 25.5%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 679Dimethyl SulfoxideSolvent

Procedure

The title compound was prepared according to the procedure described in Example-3 using 5-(2-chloro-6-fluorophenyl)-2-(4-ethynylphenyl)-2,4-dihydro-3H-1,2,4-triazol-3-one (Intermediate-2, 0.100 g, 0.319 mmol), 2-chloro-1-iodo-4-(trifluoromethyl)benzene (0.147 g, 0.479 mmol), TBAF (0.201 g, 0.638 mmol), bis(triphenylphosphine)palladium(II) chloride (0.020 g, 0.028 mmol) and DMSO (3.0 mL). The obtained product was purified with column chromatography on silica gel eluting with 1.0% MeOH:DCM to afford 0.040 g of the desired product. 1H NMR (300 MHz, DMSO d6): δ 7.51 (d, J=8.7 Hz, 1H), 7.59 (d, J=7.8 Hz, 1H), 7.67-7.87 (m, 3H), 7.84 (t, J=8.4 Hz, 2H), 8.05 (d, J=8.4 Hz, 2H), 8.11 (s, 1H), 12.75 (br s, 1H). MS (m/z): 492.22 (M+).

Workup

  1. customThe title compound was prepared
  2. customThe obtained product was purified with column chromatography on silica gel eluting with 1.0% MeOH

Sources & evidence

ORD record
ord-47963eba2b7940f8b16821f5bf57bfc6
Source dataset
uspto-grants-2016_09
Patent number
US09439890B2

Reaction notes

Loading…