Hydroxyamine hydrochloride → 4-(2,4-Difluorobenzoyl)-1-formylpiperidine oxime

HRID 2417705ノート

反応式

HRID 2417705 の反応式
C([O-])(=O)C.[NH4+:5].[F:6][C:7]1[CH:22]=[C:21]([F:23])[CH:20]=[CH:19][C:8]=1[C:9]([CH:11]1[CH2:16][CH2:15][N:14]([CH:17]=O)[CH2:13][CH2:12]1)=[O:10].Cl.N[OH:26]>O.C(O)C>[F:6][C:7]1[CH:22]=[C:21]([F:23])[CH:20]=[CH:19][C:8]=1[C:9]([CH:11]1[CH2:16][CH2:15][N:14]([CH:17]=[N:5][OH:26])[CH2:13][CH2:12]1)=[O:10]

参加物

6

反応物 3

HCID 443297Hydroxyamine hydrochlorideHCID 517165Ammonium AcetateHCID 114141024-(2,4-Difluorobenzoyl)piperidine-1-carbaldehyde

生成物 1

HCID 867386014-(2,4-Difluorobenzoyl)-1-formylpiperidine oxime収率 75.5%

試薬・触媒・溶媒 2

HCID 702Ethanol溶媒HCID 962Water溶媒

実験手順

A solution of 12 g of ammonium acetate in 45 ml of water was added to a solution of 15 g of 4-(2,4-difluorobenzoyl)-1-formylpiperidine and 6 g of hydroxylamine hydrochloride in 35 ml of ethanol. The mixture was heated for 18 at 90°, with stirring. The solution was evaporated in vacuum until precipitation occurred. Water (500 ml) was added. The mixture was filtered, washed with 300 ml of water and dried in vacuum over phosphorous pentoxide to yield 12 g (75.5%) of product. Recrystallization from ethanol and water yielded the analytical sample, mp, 185°.

後処理

  1. temperatureThe mixture was heated for 18 at 90°
  2. customThe solution was evaporated in vacuum until precipitation
  3. additionWater (500 ml) was added
  4. filtrationThe mixture was filtered
  5. washwashed with 300 ml of water
  6. dry with materialdried in vacuum over phosphorous pentoxide

出典と根拠

ORDレコード
ord-8e4e48bb6a064989b3f33e3604aac118
出典データセット
uspto-grants-1984_09
特許番号
US04469869

反応ノート

読み込み中…