Dicyclohexylcarbodiimide → HCID 20096977, 화합물

HRID 1769677노트

반응식

HRID 1769677 반응식
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]

참가 물질

8

반응물 4

HCID 10868Dicyclohexylcarbodiimide2회HCID 218852-DimethylaminopyridineHCID 150442041,2-Bis(4-ethylphenyl)-2-hydroxyethanoneHCID 20096955HCID 20096955, 화합물

생성물 1

HCID 20096977HCID 20096977, 화합물수율 27.5%

시약·촉매·용매 3

HCID 142844-(Dimethylamino)pyridine촉매HCID 6228Dimethylformamide용매HCID 8857Ethyl Acetate용매

실험 절차

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.

후처리

  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)

출처 및 근거

ORD 기록
ord-2b6067b4442849ffa4efd1ab5df8312c
출처 데이터셋
uspto-grants-1995_01
특허 번호
US05382584

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