Potassium Cyanide → 2,6-Difluoro-4-iodobenzonitrile

HRID 1034108

反応式

HRID 1034108 の反応式
N([O-])=O.[Na+].[F:5][C:6]1[CH:12]=[C:11]([I:13])[CH:10]=[C:9]([F:14])[C:7]=1N.[C-:15]#[N:16].[K+].C(=O)(O)[O-].[Na+].[OH-].[Na+]>S(=O)(=O)(O)O.O.O.O.O.O.O.S([O-])([O-])(=O)=O.[Cu+2].C1C=CC=CC=1.C(O)(=O)C>[F:5][C:6]1[CH:12]=[C:11]([I:13])[CH:10]=[C:9]([F:14])[C:7]=1[C:15]#[N:16]

参加物

11

反応物 5

HCID 9032Potassium CyanideHCID 14798Sodium HydroxideHCID 2789432,6-Difluoro-4-iodoanilineHCID 516892Sodium BicarbonateHCID 23668193Sodium Nitrite

生成物 1

HCID 190230682,6-Difluoro-4-iodobenzonitrile

試薬・触媒・溶媒 5

HCID 24463Copper sulfate pentahydrate触媒HCID 176Acetic Acid溶媒HCID 241Benzene溶媒HCID 962Water溶媒2 回HCID 1118Sulfuric Acid溶媒

実験手順

12 g of sodium nitrite was dissolved in 91 ml of sulfuric acid and cooled to 10° C or less, and then 100 ml of acetic acid was added. At 20 to 25° C, 39 g of the 2,6-difluoro-4-iodoaniline from Step 3 was added to the solution, and then the solution was agitated for one hour. A second solution was made by dissolving 37 g of copper sulfate pentahydrate in 91 ml of water to which was added 62 g of ice, and this solution was added to the first. A third solution containing 39 of potassium cyanide dissolved in 92 ml of water, 221 g of sodium bicarbonate, and 91 ml of benzene was added to the first solution, and a diazonium salt sulfuric acid solution was added therein. After agitation at room temperature for 3 hours, a sodium hydroxide aqueous solution was added to dissolve the crystals. After being extracted with chloroform, the crystals were washed three times alternating with a 10% sodium hydroxide solution and water. After distillation of the chloroform, the residue was extracted with hexane, and the hexane was distilled off. This residue was recrystallized with methanol to obtain 6.7 g of 1,3-difluoro-2-cyano-5-iodobenzene.

後処理

  1. temperaturecooled to 10° C or less
  2. additionthis solution was added to the first
  3. waitAfter agitation at room temperature for 3 hours
  4. dissolutionto dissolve the crystals
  5. extractionAfter being extracted with chloroform
  6. washthe crystals were washed three times
  7. distillationAfter distillation of the chloroform
  8. extractionthe residue was extracted with hexane
  9. distillationthe hexane was distilled off
  10. customThis residue was recrystallized with methanol

出典と根拠

ORDレコード
ord-cd3685bbd7bf4494a31e80b65999d87a
出典データセット
uspto-grants-1994_05
特許番号
US05314640

関連ノート

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