Cyclopropylacetylene → N-(4-Chloro-3-(3-(4-(2-cyclopropylethynyl)phenyl)-4,5-dihydro-5-oxo-1,2,4-triazol-1-yl)benzyl)pivalamide

HRID 59546

Reaction equation

HRID 59546 reaction equation
[Cl:1][C:2]1[CH:15]=[CH:14][C:5]([CH2:6][NH:7][C:8](=[O:13])[C:9]([CH3:12])([CH3:11])[CH3:10])=[CH:4][C:3]=1[N:16]1[C:20](=[O:21])[NH:19][C:18]([C:22]2[CH:27]=[CH:26][C:25](I)=[CH:24][CH:23]=2)=[N:17]1.[C:29]([CH:31]1[CH2:33][CH2:32]1)#[CH:30].CCCC[N+](CCCC)(CCCC)CCCC.[F-]>CS(C)=O.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>[Cl:1][C:2]1[CH:15]=[CH:14][C:5]([CH2:6][NH:7][C:8](=[O:13])[C:9]([CH3:12])([CH3:11])[CH3:10])=[CH:4][C:3]=1[N:16]1[C:20](=[O:21])[NH:19][C:18]([C:22]2[CH:27]=[CH:26][C:25]([C:30]#[C:29][CH:31]3[CH2:33][CH2:32]3)=[CH:24][CH:23]=2)=[N:17]1

Participants

6

Reactant 3

HCID 138823CyclopropylacetyleneHCID 2724141Tetrabutylammonium FluorideHCID 136492387N-(4-chloro-3-(4,5-dihydro-3-(4-iodophenyl)-5-oxo-1,2,4-triazol-1-yl)benzyl)pivalamide

Product 1

HCID 136246075N-(4-Chloro-3-(3-(4-(2-cyclopropylethynyl)phenyl)-4,5-dihydro-5-oxo-1,2,4-triazol-1-yl)benzyl)pivalamideYield 56.8%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 679Dimethyl SulfoxideSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of N-(4-chloro-3-(4,5-dihydro-3-(4-iodophenyl)-5-oxo-1,2,4-triazol-1-yl)benzyl)pivalamide (Intermediate-95, 0.100 g, 0.196 mmol) in DMSO (3.0 mL), ethynylcyclopropane (0.035 g, 0.530 mmol), TBAF (0.150 g, 0.574) and bis(triphenylphosphine)palladium(II) chloride (catalytic) were added and the reaction mass was stirred at 80° C. for 5-6 h. After completion of the reaction, the reaction mass was quenched with water and extracted with DCM and concentrated to afford 0.050 g of the desired title product. 1H NMR (300 MHz, DMSO d6): δ 0.76-0.91 (m, 2H), 0.91-0.92 (m, 2H), 1.11 (s, 9H), 1.57 (m, 1H), 4.28 (br d, 2H), 7.31-7.34 (br d, 1H), 7.42 (br s, 1H), 7.47-7.50 (br m, 2H), 7.60 (d, J=8.4 Hz, 1H), 7.78 (d, J=8.4 Hz, 2H), 8.18 (s, 1H), 12.58 (s, 1H); MS (m/z): 449.52 (M+H)+.

Workup

  1. customAfter completion of the reaction
  2. customthe reaction mass was quenched with water
  3. extractionextracted with DCM
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-2b27fd7d23344702a73302c40cf20552
Source dataset
uspto-grants-2016_09
Patent number
US09439890B2

Linked notes

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