Dicyclohexylcarbodiimide → HCID 20096977、化合物

HRID 1769677ノート

反応式

HRID 1769677 の反応式
C1(N=C=NC2CCCCC2)CCCCC1.[CH3:16][C:17]1[CH:22]=[CH:21][CH:20]=[C:19]([CH3:23])[C:18]=1[NH:24][C:25]([CH2:27][N:28]1[CH2:33][CH2:32][N:31]([CH2:34][C:35]([OH:37])=[O:36])[CH2:30][CH2:29]1)=[O:26].[OH:38][CH:39]([C:50]1[CH:55]=[CH:54][C:53]([CH2:56][CH3:57])=[CH:52][CH:51]=1)[C:40]([C:42]1[CH:47]=[CH:46][C:45]([CH2:48][CH3:49])=[CH:44][CH:43]=1)=O.CN(C1C=CC=CN=1)C>CN(C)C=O.CN(C1C=CN=CC=1)C.C(OCC)(=O)C>[CH3:23][C:19]1[CH:20]=[CH:21][CH:22]=[C:17]([CH3:16])[C:18]=1[NH:24][C:25]([CH2:27][N:28]1[CH2:33][CH2:32][N:31]([CH2:34][C:35]([O:37][CH:40]([C:42]2[CH:43]=[CH:44][C:45]([CH2:48][CH3:49])=[CH:46][CH:47]=2)[C:39](=[O:38])[C:50]2[CH:51]=[CH:52][C:53]([CH2:56][CH3:57])=[CH:54][CH:55]=2)=[O:36])[CH2:30][CH2:29]1)=[O:26]

参加物

8

反応物 4

HCID 10868Dicyclohexylcarbodiimide2 回HCID 218852-DimethylaminopyridineHCID 150442041,2-Bis(4-ethylphenyl)-2-hydroxyethanoneHCID 20096955HCID 20096955、化合物

生成物 1

HCID 20096977HCID 20096977、化合物収率 27.5%

試薬・触媒・溶媒 3

HCID 142844-(Dimethylamino)pyridine触媒HCID 6228Dimethylformamide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

1,3-Dicyclohexylcarbodiimide (DCC; 0.81 g, 3.92 mmol) was added in one portion to a rapidly-stirred mixture of 4-[[[(2,6-dimethylphenyl)amino]carbonyl]methyl]-1-piperazineacetic acid (1.0 g, 3.27 mmol), 2-hydroxy-1,2-di-(4-ethylphenyl)ethanone (IX; 0.88 g, 3.27 mmol) and dimethylaminopyridine (DMAP: 40 mg) in anhydrous dimethylformamide (25 mL). After 2 hours at ambient temperature, an additional equivalent of DCC and DMAP were added. The mixture was stirred further for 22 hours at room temperature before it was heated to 70° C. for 6 hours. Upon cooling, the mixture was diluted with ethyl acetate, washed with saturated sodium bicarbonate solution and brine, dried and concentrated. Purification of the residue by flash chromatography on silica gel (gradient elution with 50% ethyl acetate in hexanes followed by ethyl acetate) afforded 0.50 g of the benzoin ester product (VI) as an off-white solid. The ester was used in subsequent reactions without additional purification.

後処理

  1. temperaturewas heated to 70° C. for 6 hours
  2. temperatureUpon cooling
  3. washwashed with saturated sodium bicarbonate solution and brine
  4. customdried
  5. concentrationconcentrated
  6. customPurification of the residue by flash chromatography on silica gel (gradient elution with 50% ethyl acetate in hexanes followed by ethyl acetate)

出典と根拠

ORDレコード
ord-2b6067b4442849ffa4efd1ab5df8312c
出典データセット
uspto-grants-1995_01
特許番号
US05382584

反応ノート

読み込み中…