Sodium Carbonate → 3-Chloro-4-(2-methyl-5-nitrophenyl)pyridine

HRID 13497

반응식

HRID 13497 반응식
Br[C:2]1[CH:7]=[C:6]([N+:8]([O-:10])=[O:9])[CH:5]=[CH:4][C:3]=1[CH3:11].O.[Cl:13][C:14]1[CH:15]=[N:16][CH:17]=[CH:18][C:19]=1B(O)O.C(=O)([O-])[O-].[Na+].[Na+]>C(COC)OC.O.[Pd](Cl)Cl.C1(P([C-]2C=CC=C2)C2C=CC=CC=2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2]>[Cl:13][C:14]1[CH:15]=[N:16][CH:17]=[CH:18][C:19]=1[C:2]1[CH:7]=[C:6]([N+:8]([O-:10])=[O:9])[CH:5]=[CH:4][C:3]=1[CH3:11]

참가 물질

7

반응물 3

HCID 10340Sodium CarbonateHCID 821892-Bromo-4-nitrotolueneHCID 179987563-Chloro-4-pyridineboronic acid hydrate

생성물 1

HCID 220408203-Chloro-4-(2-methyl-5-nitrophenyl)pyridine

시약·촉매·용매 3

HCID 178418228Bis(cyclopenta-1,4-dien-1-yl(diphenyl)phosphane);dichloropalladium;iron(2+)촉매HCID 962Water용매HCID 80711,2-Dimethoxyethane용매

반응 조건

온도
90 °C

실험 절차

Nitrogen was bubbled through a solution of 2-bromo-1-methyl-4-nitrobenzene (1 eq) in dimethoxyethane and water (3:1) for 0.5 h. Bis(diphenylphosphino)ferrocene Palladium(II)chloride (0.05 eq) followed by 3-chloro-4-pyridine boronic acid hydrate (1 eq) and sodium carbonate (3 eq) was added and the mixture was heated to 90° C. for 16 h under nitrogen. The reaction mixture was concentrated and partitioned between ethyl acetate and water. The organic layer was washed with brine and dried with sodium sulfate and concentrated. Purification on silica gel gave 3-chloro-4-(2-methyl-5-nitrophenyl)pyridine. MS: MH+=248.

후처리

  1. additionwas added
  2. concentrationThe reaction mixture was concentrated
  3. custompartitioned between ethyl acetate and water
  4. washThe organic layer was washed with brine
  5. dry with materialdried with sodium sulfate
  6. concentrationconcentrated
  7. customPurification on silica gel

출처 및 근거

ORD 기록
ord-b33daae7328346a6bc77c365a8963751
출처 데이터셋
uspto-grants-2010_06
특허 번호
US07728010B2

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