Triethylamine → 5-Amino-1-(2-ethylphenyl)-1H-pyrazole-4-carbonitrile

HRID 1434536

反応式

HRID 1434536 の反応式
Cl.[CH2:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[NH:10][NH2:11])[CH3:3].C(O[CH:15]=[C:16]([C:19]#[N:20])[C:17]#[N:18])C.C(N(CC)CC)C>C(O)C.ClCCl>[NH2:20][C:19]1[N:10]([C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[CH2:2][CH3:3])[N:11]=[CH:15][C:16]=1[C:17]#[N:18]

参加物

6

反応物 3

HCID 8471TriethylamineHCID 671522-(Ethoxymethylene)propanedinitrileHCID 27332092-Ethylphenylhydrazine Hydrochloride

生成物 1

HCID 121505585-Amino-1-(2-ethylphenyl)-1H-pyrazole-4-carbonitrile

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 6344Dichloromethane溶媒

反応条件

温度
60 °C

実験手順

A solution of 3.0 g (17.0 mmol) of 2-ethylphenylhydrazine hydrochloride and 2.12 g (17.0 mmol) of ethoxymethylenemalononitrile in 36 ml of ethanol is mixed with 7.1 ml (51.1 mmol) of triethylamine and heated at 60° C. until the reaction is complete according to a TLC check (about 30 min). For working up, the solvent is stripped off, and the residue is taken up in dichloromethane, washed with saturated sodium bicarbonate solution and dried over sodium sulphate. Concentration results in a crude product which is purified by column chromatography on silica gel (mobile phase dichloromethane with 0-10% methanol). 3.05 g (83.5% of theory) of the desired product are obtained.

後処理

  1. customis complete according to a TLC check (about 30 min)
  2. washwashed with saturated sodium bicarbonate solution
  3. dry with materialdried over sodium sulphate
  4. concentrationConcentration
  5. customresults in a crude product which
  6. customis purified by column chromatography on silica gel (mobile phase dichloromethane with 0-10% methanol)

出典と根拠

ORDレコード
ord-5b5cc3eef82b4f35b12de8a0f0d7a9a4
出典データセット
uspto-grants-2009_11
特許番号
US07615558B2

関連ノート

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