Sodium Carbonate → 2-Chloro-4-(5-formyl-pyridin-3-yl)-benzonitrile

HRID 2407396Notes

Reaction equation

HRID 2407396 reaction equation
Br[C:2]1[CH:9]=[CH:8][C:5]([C:6]#[N:7])=[C:4]([Cl:10])[CH:3]=1.CC1(C)C(C)(C)OB([C:19]2[CH:20]=[N:21][CH:22]=[C:23]([CH:26]=2)[CH:24]=[O:25])O1.C(=O)([O-])[O-].[Na+].[Na+]>O1CCOCC1.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[Cl:10][C:4]1[CH:3]=[C:2]([C:19]2[CH:20]=[N:21][CH:22]=[C:23]([CH:24]=[O:25])[CH:26]=2)[CH:9]=[CH:8][C:5]=1[C:6]#[N:7]

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 49926405-(Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine-3-carbaldehydeHCID 70104204-Bromo-2-chlorobenzonitrile

Product 1

HCID 595783972-Chloro-4-(5-formyl-pyridin-3-yl)-benzonitrile

Reagents, catalysts & solvents 2

HCID 178418397HCID 178418397, compoundCatalystHCID 312751,4-DioxaneSolvent

Procedure

A mixture of 4-bromo-2-chlorobenzonitrile (1.082 g, 5 mmol), 5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)nicotinaldehyde (1.165 g, 5.00 mmol), Pd(PPh3)4 (0.144 g, 0.125 mmol), sodium carbonate (2.5 mL, 5.00 mmol) in 1,4-dioxane (20 mL) was heated to reflux for 6 h. After cooling to room temperature, the solid was filtered and washed by ethyl acetate and water. After drying under vacuum, yellow powder was collected (1 g). 1H NMR (400 MHz, CDCl3): δ 7.63 (dd, J=1.68, 8 Hz, 1H), 7.79 (d, J=1.68 Hz, 1H), 7.83 (d, J=8 Hz, 1H), 8.35 (dd, J=2.24 Hz, 2.04 Hz, 1H), 9.07 (d, J=2.36 Hz, 1H), 9.15 (d, J=1.88 Hz, 1H), 10.22 (s, 1H).

Workup

  1. temperaturewas heated
  2. temperatureto reflux for 6 h
  3. filtrationthe solid was filtered
  4. washwashed by ethyl acetate and water
  5. customAfter drying under vacuum, yellow powder
  6. customwas collected (1 g)

Sources & evidence

ORD record
ord-cd3b8ba399554965b384b34726989622
Source dataset
uspto-grants-2014_08
Patent number
US08809545B2

Reaction notes

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