Carbon tetrabromide → (Z)-3-(2-Bromoethyl)-5-fluoro-2-methyl-1-(4-methylthiobenzylidene)indene

HRID 2371480노트

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HRID 2371480 반응식
[F:1][C:2]1[CH:3]=[C:4]2[C:8](=[CH:9][CH:10]=1)/[C:7](=[CH:11]\[C:12]1[CH:17]=[CH:16][C:15]([S:18][CH3:19])=[CH:14][CH:13]=1)/[C:6]([CH3:20])=[C:5]2[CH2:21][CH2:22]O.C(Br)(Br)(Br)[Br:25].C1(P(C2C=CC=CC=2)CCP(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C(Cl)Cl>[Br:25][CH2:22][CH2:21][C:5]1[C:4]2[C:8](=[CH:9][CH:10]=[C:2]([F:1])[CH:3]=2)/[C:7](=[CH:11]\[C:12]2[CH:17]=[CH:16][C:15]([S:18][CH3:19])=[CH:14][CH:13]=2)/[C:6]=1[CH3:20]

참가 물질

5

반응물 3

HCID 11205Carbon tetrabromideHCID 742671,2-Bis(diphenylphosphino)ethaneHCID 70229088(Z)-5-Fluoro-3-(2-hydroxyethyl)-2-methyl-1-(4-methylthiobenzylidene)indene

생성물 1

HCID 70230765(Z)-3-(2-Bromoethyl)-5-fluoro-2-methyl-1-(4-methylthiobenzylidene)indene

시약·촉매·용매 1

HCID 6344Dichloromethane용매

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온도
0 °C

실험 절차

To a solution of the alcohol from Step 1 (4.8 g, 14.7 mmol) and carbon tetrabromide (6.34 g, 19.1 mmol) in methylene chloride (100 mL) at 0° C. there was added, in portions, 1,2-bis(diphenylphosphino)ethane (6.34 g, 17.3 mmol). The mixture was stirred at 0° C. for 1 hour, and the solvent was evaporated. The residue was stirred in a mixture of ethyl acetate and water (150 mL each) for 30 minutes. After filtration, the organic portion of the filtrate was evaporated down and the crude product purified by column chromatography on silica gel using 10% ethyl acetate in hexane as eluent to afford pure title compound as a yellow oil which solidified on standing.

후처리

  1. customthe solvent was evaporated
  2. stirringThe residue was stirred in a mixture of ethyl acetate and water (150 mL each) for 30 minutes
  3. filtrationAfter filtration
  4. customthe organic portion of the filtrate was evaporated down
  5. customthe crude product purified by column chromatography on silica gel using 10% ethyl acetate in hexane as eluent

출처 및 근거

ORD 기록
ord-f6b88d6cc4cc46e0bcdf162717dc18f5
출처 데이터셋
uspto-grants-1992_03
특허 번호
US05093356

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