Acetic Acid → Piperidine-1,3,3-tricarboxylic acid 1-(2,2,2-trichloroethyl) 3-benzyl 3-(3,3-dimethyl-2-oxobutyl)ester

HRID 2407497ノート

反応式

HRID 2407497 の反応式
[CH2:1]([O:8][C:9]([C:11]1([C:25]([OH:27])=[O:26])[CH2:16][CH2:15][CH2:14][N:13]([C:17]([O:19][CH2:20][C:21]([Cl:24])([Cl:23])[Cl:22])=[O:18])[CH2:12]1)=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].Br[CH2:35][C:36](=[O:41])[C:37]([CH3:40])([CH3:39])[CH3:38].C(O)(=O)C>CN(C)C=O>[CH3:38][C:37]([CH3:40])([CH3:39])[C:36](=[O:41])[CH2:35][O:26][C:25]([C:11]1([C:9]([O:8][CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)=[O:10])[CH2:16][CH2:15][CH2:14][N:13]([C:17]([O:19][CH2:20][C:21]([Cl:24])([Cl:22])[Cl:23])=[O:18])[CH2:12]1)=[O:27]

参加物

6

反応物 4

HCID 176Acetic AcidHCID 11430Potassium CarbonateHCID 21642BromopinacoloneHCID 67545923Piperidine-1,3,3-tricarboxylic acid 1-(2,2,2-trichloroethyl) 3-benzyl ester

生成物 1

HCID 67544698Piperidine-1,3,3-tricarboxylic acid 1-(2,2,2-trichloroethyl) 3-benzyl 3-(3,3-dimethyl-2-oxobutyl)ester

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

反応条件

温度
60 °C

実験手順

A mixture of piperidine-1,3,3-tricarboxylic acid 1-(2,2,2-trichloroethyl) 3-benzyl ester (3.9 g 8.8 mmol), potassium carbonate (1.83 g 13 mmol) and bromopinacolone (2.31 g 13 mmol) in N,N-dimethylformamide (55 mL) is heated at 60° C. for 2 h. The mixture is cooled back to room temperature, neutralized with acetic acid (13 mmol) and concentrated under reduced pressure. the residue is dissolved in ethyl acetate, washed with water and concentrated. Cristallization in diethyl oxide gives piperidine-1,3,3-tricarboxylic acid 1-(2,2,2-trichloroethyl) 3-benzyl 3-(3,3-dimethyl-2-oxobutyl)ester melting at 114° C.

後処理

  1. temperatureThe mixture is cooled back to room temperature
  2. concentrationconcentrated under reduced pressure
  3. dissolutionthe residue is dissolved in ethyl acetate
  4. washwashed with water
  5. concentrationconcentrated

出典と根拠

ORDレコード
ord-f4e866575fe042558d2586bb75feea1b
出典データセット
uspto-grants-2014_08
特許番号
US08809539B2

反応ノート

読み込み中…