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Dichloromethane → 2,3-dichloro-N-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]benzenesulfonamide

HRID 706768
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HRID 706768 반응식
[Cl:1][C:2]1[C:7]([Cl:8])=[CH:6][CH:5]=[CH:4][C:3]=1[S:9](Cl)(=[O:11])=[O:10].[CH3:13][C:14]1([CH3:28])[C:18]([CH3:20])([CH3:19])[O:17][B:16]([C:21]2[CH:26]=[CH:25][C:24]([NH2:27])=[CH:23][CH:22]=2)[O:15]1.C(Cl)Cl>N1C=CC=CC=1>[Cl:1][C:2]1[C:7]([Cl:8])=[CH:6][CH:5]=[CH:4][C:3]=1[S:9]([NH:27][C:24]1[CH:23]=[CH:22][C:21]([B:16]2[O:17][C:18]([CH3:20])([CH3:19])[C:14]([CH3:28])([CH3:13])[O:15]2)=[CH:26][CH:25]=1)(=[O:11])=[O:10]
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참가 물질

5

반응물 3

HCID 6344DichloromethaneHCID 27342222,3-Dichlorobenzene-1-sulfonyl chlorideHCID 27346204-(Tetramethyl-1,3,2-dioxaborolan-2-yl)aniline

생성물 1

HCID 586961462,3-dichloro-N-[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]benzenesulfonamide

시약·촉매·용매 1

HCID 1049Pyridine용매

실험 절차

The title compound was prepared by adding 2,3-dichloro-benzenesulfonyl chloride (11.2 g) and 4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)phenylamine (10.0 g) to a reaction vessel containing a magnetic stirring bar, followed by 200 ml dry DCM and 4.1 ml pyridine. The reaction mixture was stirred at RT for 20 h before being cooled on an ice-bath and quenched with 1M aqueous sodium hydroxide solution. The organic phase was separated and the aqueous phase acidified with 2M aqueous hydrochloric acid and extracted three times with EtOAc. The combined organic phases were washed with brine and dried over sodium sulfate and evaporated to afford the crude product. Purification by flash chromatography on silica gel using a mixture of EtOAc and heptane as the eluent afforded 2,3-dichloro-N-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-benzenesulfonamide as a colorless solid after evaporation of the solvents under reduced pressure. Yield: 15.11 g (77%).

후처리

  1. additioncontaining a magnetic stirring bar
  2. temperaturebefore being cooled on an ice-bath
  3. customquenched with 1M aqueous sodium hydroxide solution
  4. customThe organic phase was separated
  5. extractionextracted three times with EtOAc
  6. washThe combined organic phases were washed with brine
  7. dry with materialdried over sodium sulfate
  8. customevaporated
  9. customto afford the crude product

출처 및 근거

ORD 기록
ord-f9d1cea5f5ef4b0198460cfef7f9f7d6
출처 데이터셋
uspto-grants-2015_11
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09174993B2

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