Water → 2-Chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)-3-(difluoromethoxy)pyridin-4-amine

HRID 407219

반응식

HRID 407219 반응식
Br[C:2]1[N:7]=[C:6]([Cl:8])[C:5]([O:9][CH:10]([F:12])[F:11])=[C:4]([NH2:13])[CH:3]=1.[Cl:14][C:15]1[CH:20]=[CH:19][C:18](B2OCCCO2)=[C:17]([F:27])[C:16]=1[O:28][CH3:29].[F-].[Cs+].O>COCCOC.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[Cl:8][C:6]1[C:5]([O:9][CH:10]([F:12])[F:11])=[C:4]([NH2:13])[CH:3]=[C:2]([C:18]2[CH:19]=[CH:20][C:15]([Cl:14])=[C:16]([O:28][CH3:29])[C:17]=2[F:27])[N:7]=1

참가 물질

7

반응물 4

HCID 962WaterHCID 25953Cesium fluorideHCID 577824192-(4-Chloro-2-fluoro-3-methoxyphenyl)-1,3,2-dioxaborinaneHCID 866754046-Bromo-2-chloro-3-(difluoromethoxy)pyridin-4-amine

생성물 1

HCID 866754052-Chloro-6-(4-chloro-2-fluoro-3-methoxyphenyl)-3-(difluoromethoxy)pyridin-4-amine수율 84.2%

시약·촉매·용매 2

HCID 178418476HCID 178418476, 화합물촉매HCID 80711,2-Dimethoxyethane용매

실험 절차

6-Bromo-2-chloro-3-(difluoromethoxy)pyridin-4-amine (368 mg, 1.346 mmol), 2-(4-chloro-2-fluoro-3-methoxyphenyl)-1,3,2-dioxaborinane (395 mg, 1.615 mmol), PdCl2(PPh3)2 (47.2 mg, 0.067 mmol), and CsF (409 mg, 2.69 mmol) were combined in DME (2 mL) and H2O (2 mL) and heated in a Biotage microwave reactor at 110° C. for 15 min. The cooled reaction mixture was partitioned between EtOAc and H2O. The organic phase was dried, concentrated onto silica gel, and purified by flash chromatography (SiO2, EtOAc/hexane gradient). This process yielded the title compound as a white solid (0.4 g, 84%): mp 152-154° C.; 1H NMR (300 MHz, DMSO-d6) δ 7.63-7.50 (m, 1H), 7.42 (dd, J=8.7, 1.6, 1H), 7.16 (d, J=1.8, 1H), 7.02 (t, J=73.4, 1H), 6.70 (s, 2H), 3.93 (d, J=0.8, 3H); ESIMS m/z 354 ([M+H]+), 352 ([M−H]−).

후처리

  1. customThe cooled reaction mixture
  2. customwas partitioned between EtOAc and H2O
  3. customThe organic phase was dried
  4. concentrationconcentrated onto silica gel
  5. custompurified by flash chromatography (SiO2, EtOAc/hexane gradient)

출처 및 근거

ORD 기록
ord-67c9ae402d9048d795b7fd9de05e6325
출처 데이터셋
uspto-grants-2014_06
특허 번호
US08754229B2

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