Potassium Cyanide → 2,5,6-Trimethyl-7-(2,4,6-trimethylphenyl)-7H-pyrrolo[2,3-d]pyrimidine-4-carbonitrile

HRID 1884347Notes

Reaction equation

HRID 1884347 reaction equation
Cl[C:2]1[C:3]2[C:11]([CH3:12])=[C:10]([CH3:13])[N:9]([C:14]3[C:19]([CH3:20])=[CH:18][C:17]([CH3:21])=[CH:16][C:15]=3[CH3:22])[C:4]=2[N:5]=[C:6]([CH3:8])[N:7]=1.[C-:23]#[N:24].[K+]>CS(C)=O.O>[CH3:8][C:6]1[N:7]=[C:2]([C:23]#[N:24])[C:3]2[C:11]([CH3:12])=[C:10]([CH3:13])[N:9]([C:14]3[C:19]([CH3:20])=[CH:18][C:17]([CH3:21])=[CH:16][C:15]=3[CH3:22])[C:4]=2[N:5]=1

Participants

5

Reactant 2

HCID 9032Potassium CyanideHCID 154284084-Chloro-7-mesityl-2,5,6-trimethyl-7H-pyrrolo[2,3-d]pyrimidine

Product 1

HCID 235057422,5,6-Trimethyl-7-(2,4,6-trimethylphenyl)-7H-pyrrolo[2,3-d]pyrimidine-4-carbonitrileYield 65.3%

Reagents, catalysts & solvents 2

HCID 679Dimethyl SulfoxideSolventHCID 962WaterSolvent

Conditions

Temperature
130 °C

Procedure

A mixture of 4-chloro-2,5,6-trimethyl-7-(2,4,6-trimethyl-phenyl)-7H-pyrrolo[2,3-d]-pyrimidine (10.000 g, 31.90 mmol) and potassium cyanide (20.75 g, 319 mmol) in 100 ml dimethylsulfoxide was heated at 130° C. oil bath over weekend. The mixture was diluted with water and extracted with ethyl acetate. The organic layer was washed with brine, dried over magnesium sulfate, and concentrated to give 9.61 g (99%) of brown soild. The solid was recrystallized from i-propanol to give 6.34 g (65%) of the title compound as light golden crystals, mp 188-190° C. 1H NMR (CDCl3) δ 1.8(s, 6H), 2.07(s, 3H), 2.36(s, 3H), 2.50(s, 3H), 2.65(s, 3H), 7.00(s, 2H).

Workup

  1. extractionextracted with ethyl acetate
  2. washThe organic layer was washed with brine
  3. dry with materialdried over magnesium sulfate
  4. concentrationconcentrated
  5. customto give 9.61 g (99%) of brown soild
  6. customThe solid was recrystallized from i-propanol

Sources & evidence

ORD record
ord-5d740887b622499e8f00ddaf568167d5
Source dataset
uspto-grants-2004_07
Patent number
US06765008B1

Reaction notes

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