Triethylamine → HCID 67050111, compound

HRID 1875822Notes

Reaction equation

HRID 1875822 reaction equation
Br[C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[C:9]1[N:13]([CH2:14][CH:15]2[CH2:20][CH2:19][CH2:18][CH2:17][CH2:16]2)[C:12]2[CH:21]=[CH:22][CH:23]=[CH:24][C:11]=2[N:10]=1.[C:25]([C:27]1[CH:34]=[CH:33][C:30]([C:31]#[N:32])=[CH:29][CH:28]=1)#[CH:26].C(N(CC)CC)C>O1CCCC1.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.[Cu]I>[Cl:8][C:6]1[CH:5]=[CH:4][C:3]([C:9]2[N:13]([CH2:14][CH:15]3[CH2:20][CH2:19][CH2:18][CH2:17][CH2:16]3)[C:12]3[CH:21]=[CH:22][CH:23]=[CH:24][C:11]=3[N:10]=2)=[C:2]([C:26]#[C:25][C:27]2[CH:34]=[CH:33][C:30]([C:31]#[N:32])=[CH:29][CH:28]=2)[CH:7]=1

Participants

7

Reactant 3

HCID 8471TriethylamineHCID 45472454-EthynylbenzonitrileHCID 67049683HCID 67049683, compound

Product 1

HCID 67050111HCID 67050111, compoundYield 38%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418476HCID 178418476, compoundCatalystHCID 8028TetrahydrofuranSolvent

Conditions

Temperature
80 °C

Procedure

To a solution of 2-(2-bromo-4-chloro-phenyl)-1-cyclohexylmethyl-1H-benzoimidazole (0.56 g, 1.38 mmol) in dry tetrahydrofuran (8 ml) were added 4-ethynyl-benzonitrile (0.22 mg, 1.7 mmol; CAS Reg. No. 3032-92-6), bis(triphenylphosphine)palladium(ii) dichloride (63 mg, 0.09 mmol), copper(I) iodide (8 mg, 0.04 mmol) and triethyl amine (10 ml) at 25° C. in a sealed tube. The resulting mixture was degassed and back-filled with nitrogen three times. It was then allowed to stir at 80° C. for 16 h. The reaction mixture was filtered through a bed of celite, concentrated under reduced pressure. The residue was purified by column chromatography over silica gel (20-25 ethyl acetate/n-hexane) to afford the desired compound as an off-white powder (38%). MS (Turbo Spray): m/z=450.0 (M+H).

Workup

  1. customat 25° C.
  2. customThe resulting mixture was degassed
  3. additionback-filled with nitrogen three times
  4. filtrationThe reaction mixture was filtered through a bed of celite,
  5. concentrationconcentrated under reduced pressure
  6. customThe residue was purified by column chromatography over silica gel (20-25 ethyl acetate/n-hexane)

Sources & evidence

ORD record
ord-3e5c1adc7c4e41798167197cb9a48e64
Source dataset
uspto-grants-2012_11
Patent number
US08309581B2

Reaction notes

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