Toluene → Ethyl 4-iodo-2-methanesulfonylbenzoate

HRID 2411152노트

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HRID 2411152 반응식
Br[C:2]1[CH:12]=[CH:11][C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[C:4]([S:13]([CH3:16])(=[O:15])=[O:14])[CH:3]=1.[I-:17].[Na+].C1(C)C=CC=CC=1.CNCCNC>[Cu]I.O>[I:17][C:2]1[CH:12]=[CH:11][C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[C:4]([S:13]([CH3:16])(=[O:15])=[O:14])[CH:3]=1

참가 물질

7

반응물 4

HCID 1140TolueneHCID 5238Sodium IodideHCID 8070N,N'-DimethylethylenediamineHCID 59251585Ethyl 4-bromo-2-(methanesulfonyl)benzoate

생성물 1

HCID 71252507Ethyl 4-iodo-2-methanesulfonylbenzoate수율 64.5%

시약·촉매·용매 2

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매HCID 962Water용매

실험 절차

To a mixture of ethyl 4-bromo-2-methanesulfonylbenzoate (13.88 g), sodium iodide (13.54 g) and copper(I) iodide (4.30% g) were added toluene (46 mL) and N,N′-dimethylethylenediamine (4.86 mL), and the mixture was stirred with heating under reflux for 8 hr under a nitrogen stream. The reaction mixture was cooled, water was added, and the mixture was extracted with ethyl acetate. The solvent was evaporated from the organic layer, the obtained residue was purified by column chromatography (hexane:ethyl acetate) to give ethyl 4-iodo-2-methanesulfonylbenzoate (10.32 g). To a mixture of the obtained ethyl 4-iodo-2-methanesulfonylbenzoate (3.22 g), (R)-3-methylisothiazolidine 1,1-dioxide (1.23 g) described in Preparation Example 2, copper(I) iodide (4.30 g), N,N′-dimethylethylenediamine (0.92 mL) and potassium carbonate (2.52 g) was added toluene (9.2 mL), and the mixture was stirred with heating under reflux for 8 hr under a nitrogen stream. The reaction mixture was cooled, water was added, and the mixture was extracted with ethyl acetate. The solvent was evaporated from the organic layer, and the obtained residue was purified by column chromatography (hexane:ethyl acetate) to give the title compound (1.7 g).

후처리

  1. temperaturewith heating
  2. temperatureunder reflux for 8 hr under a nitrogen stream
  3. temperatureThe reaction mixture was cooled
  4. extractionthe mixture was extracted with ethyl acetate
  5. customThe solvent was evaporated from the organic layer
  6. customthe obtained residue was purified by column chromatography (hexane:ethyl acetate)

출처 및 근거

ORD 기록
ord-605a6b12b5d6475eb141675965b2cbbd
출처 데이터셋
uspto-grants-2014_08
특허 번호
US08816079B2

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