Nitrogen → N-(2',6'-difluoro-5-nitrobiphenyl-3-yl)acetamide

HRID 64136

반응식

HRID 64136 반응식
Br[C:2]1[CH:3]=[C:4]([NH:11][C:12](=[O:14])[CH3:13])[CH:5]=[C:6]([N+:8]([O-:10])=[O:9])[CH:7]=1.N#N.[F:17][C:18]1[CH:23]=[CH:22][CH:21]=[C:20]([F:24])[C:19]=1B(O)O.C(=O)([O-])[O-].[Na+].[Na+]>COCCOC.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.C1C=CC(P(C2C=CC=CC=2)[C-]2C=CC=C2)=CC=1.Cl[Pd]Cl.[Fe+2]>[F:17][C:18]1[CH:23]=[CH:22][CH:21]=[C:20]([F:24])[C:19]=1[C:2]1[CH:7]=[C:6]([N+:8]([O-:10])=[O:9])[CH:5]=[C:4]([NH:11][C:12](=[O:14])[CH3:13])[CH:3]=1

참가 물질

7

반응물 4

HCID 947NitrogenHCID 10340Sodium CarbonateHCID 27343362,6-Difluorophenylboronic acidHCID 10658908N-(3-bromo-5-nitrophenyl)acetamide

생성물 1

HCID 117777574N-(2',6'-difluoro-5-nitrobiphenyl-3-yl)acetamide수율 94%

시약·촉매·용매 2

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

실험 절차

A solution of N-(3-bromo-5-nitrophenyl)acetamide of Example 1(c) (20 g, 77 mmol) in 1,2-dimethoxyethane (250 ml) was degassed by N2 bubbling for 5 min. 2,6-Difluorophenylboronic acid (14.6 g, 92.4 mmol, 1.2 eq.) was added and the mixture was degassed for another 5 min. Pd(dppf)Cl2 (6.28 g, 7.7 mmol, 0.1 eq.) and aqueous sodium carbonate (24.49 g, 231 mmol, 3.0 eq.) were added and the procedure of Example 1(d) was followed. The crude residue of the product was purified by column chromatography (60-120 silica gel, 30% ethyl acetate in hexane) to give the product in 94% yield (21.2 g). LC-MS (ESI): Calculated mass: 292.24; Observed mass: 293.1 [M+H]+ (rt: 1.49 min).

후처리

  1. customthe mixture was degassed for another 5 min
  2. customThe crude residue of the product was purified by column chromatography (60-120 silica gel, 30% ethyl acetate in hexane)
  3. customto give the product in 94% yield (21.2 g)
  4. custom293.1 [M+H]+ (rt: 1.49 min)

출처 및 근거

ORD 기록
ord-0ae67e8e08ca44d498ab0dcc2f7cbd43
출처 데이터셋
uspto-grants-2016_09
특허 번호
US09447091B2

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