Sulfuric Acid → 6-Aminomethyl-3,4-diethoxy-2-fluorobenzonitrile sulfate

HRID 732251ノート

反応式

HRID 732251 の反応式
[CH2:1]([O:3][C:4]1[C:5]([F:17])=[C:6]([C:15]#[N:16])[C:7](=[CH:10][C:11]=1[O:12][CH2:13][CH3:14])[C:8]#[N:9])[CH3:2].[S:18](=[O:22])(=[O:21])([OH:20])[OH:19].COCCOC>[OH-].[Pd+2].[OH-].[C].C(N(CC)CC)C>[S:18]([OH:22])([OH:21])(=[O:20])=[O:19].[NH2:9][CH2:8][C:7]1[C:6]([C:15]#[N:16])=[C:5]([F:17])[C:4]([O:3][CH2:1][CH3:2])=[C:11]([O:12][CH2:13][CH3:14])[CH:10]=1

参加物

6

反応物 3

HCID 1118Sulfuric AcidHCID 80711,2-DimethoxyethaneHCID 229298414,5-Diethoxy-3-fluorophthalonitrile

生成物 1

HCID 866230016-Aminomethyl-3,4-diethoxy-2-fluorobenzonitrile sulfate収率 76%

試薬・触媒・溶媒 2

HCID 178502593HCID 178502593、化合物触媒HCID 8471Triethylamine溶媒2 回

反応条件

温度
-22 °C

実験手順

A mixture of 4,5-diethoxy-3-fluorophthalonitrile (2.34 g, 10 mol) prepared in Preparation Example 1, sulfuric acid (0.56 mL, 10 mol), 20% palladium hydroxide-carbon (0.59 g, 50% hydrate) (20% palladium-carbon powder, palladium hydroxide type (hydrate), N.E. Chemical Corporation) and 1,2-dimethoxyethane (23 mL) was stirred at −22° C. under hydrogen atmosphere (atmospheric pressure) for 24 hours. After insoluble matter in the reaction mixture was filtered off, the residue was washed with methanol (23 mL) and the combined filtrate was divided into five equal portions. After one of them was concentrated at room temperature under reduced pressure, 1,2-dimethoxyethane (9.2 mL) was added thereto, and the mixture was stirred. Then, triethylamine (0.56 mL, 4 mol) was added dropwise thereto and the mixture was stirred at room temperature for one hour. Precipitated crystals were filtered, washed with a 5% methanol-1,2-dimethoxyethane solution, and dried at room temperature under reduced pressure to give 0.59 g of the ½ triethylamine solvate of the title compound (yield: 76%) as dark white crystals.

後処理

  1. filtrationAfter insoluble matter in the reaction mixture was filtered off
  2. washthe residue was washed with methanol (23 mL)
  3. concentrationAfter one of them was concentrated at room temperature under reduced pressure, 1,2-dimethoxyethane (9.2 mL)
  4. additionwas added
  5. stirringthe mixture was stirred
  6. stirringthe mixture was stirred at room temperature for one hour
  7. customPrecipitated crystals
  8. filtrationwere filtered
  9. washwashed with a 5% methanol-1,2-dimethoxyethane solution
  10. customdried at room temperature under reduced pressure

出典と根拠

ORDレコード
ord-2f06102da0fb45d8831890ff6feb0c55
出典データセット
uspto-grants-2009_09
特許番号
US07585982B2

反応ノート

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