Water → (3E)-4-(4-tert-Butylphenyl)-4-(5-chloro-6-methoxypyridin-2-yl)but-3-enenitrile

HRID 70534Notes

Reaction equation

HRID 70534 reaction equation
[C-:1]#[N:2].[Na+].Br[CH2:5]/[CH:6]=[C:7](/[C:18]1[N:23]=[C:22]([O:24][CH3:25])[C:21]([Cl:26])=[CH:20][CH:19]=1)\[C:8]1[CH:13]=[CH:12][C:11]([C:14]([CH3:17])([CH3:16])[CH3:15])=[CH:10][CH:9]=1.O>C(O)C>[C:14]([C:11]1[CH:12]=[CH:13][C:8](/[C:7](/[C:18]2[CH:19]=[CH:20][C:21]([Cl:26])=[C:22]([O:24][CH3:25])[N:23]=2)=[CH:6]\[CH2:5][C:1]#[N:2])=[CH:9][CH:10]=1)([CH3:17])([CH3:16])[CH3:15]

Participants

5

Reactant 3

HCID 962WaterHCID 8929Sodium CyanideHCID 584528146-[(1E)-3-Bromo-1-(4-tert-butylphenyl)prop-1-en-1-yl]-3-chloro-2-methoxypyridine

Product 1

HCID 58452831(3E)-4-(4-tert-Butylphenyl)-4-(5-chloro-6-methoxypyridin-2-yl)but-3-enenitrileYield 53.3%

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

Sodium cyanide (137 mg) was added to a solution of 6-[(1E)-3-bromo-1-(4-tert-butylphenyl)prop-1-en-1-yl]-3-chloro-2-methoxypyridine (500 mg) in ethanol (10 mL), and the mixture was stirred at room temperature for 22 hours. Water was added to the reaction solution, followed by extraction with ethyl acetate. The organic layer was washed with a 2 M sodium hydroxide solution and brine, dried over sodium sulfate and filtered, after which the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=19:1→4:1) to give the title compound as a yellow oil (230 mg, 53%).

Workup

  1. extractionfollowed by extraction with ethyl acetate
  2. washThe organic layer was washed with a 2 M sodium hydroxide solution and brine
  3. dry with materialdried over sodium sulfate
  4. filtrationfiltered
  5. customafter which the solvent was evaporated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (hexane:ethyl acetate=19:1→4:1)

Sources & evidence

ORD record
ord-c1cc47113b6f4fbabb8ccde3e8ec1bb6
Source dataset
uspto-grants-2014_09
Patent number
US08822503B2

Reaction notes

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