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4-Nitrophenyl chloroformate → (S)-3,5-dichloro-4-(2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-((4-nitrophenoxy)-carbonyloxy)ethyl)pyridine 1-oxide

HRID 1776461
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HRID 1776461 반응식
[Cl:1][C:2]1[CH:3]=[N+:4]([O-:27])[CH:5]=[C:6]([Cl:26])[C:7]=1[CH2:8][C@@H:9]([C:11]1[CH:16]=[CH:15][C:14]([O:17][CH:18]([F:20])[F:19])=[C:13]([O:21][CH2:22][CH:23]2[CH2:25][CH2:24]2)[CH:12]=1)[OH:10].[C:28](Cl)(=[O:39])[O:29][C:30]1[CH:35]=[CH:34][C:33]([N+:36]([O-:38])=[O:37])=[CH:32][CH:31]=1>CN(C1C=CN=CC=1)C.C(Cl)Cl>[Cl:1][C:2]1[CH:3]=[N+:4]([O-:27])[CH:5]=[C:6]([Cl:26])[C:7]=1[CH2:8][C@@H:9]([C:11]1[CH:16]=[CH:15][C:14]([O:17][CH:18]([F:20])[F:19])=[C:13]([O:21][CH2:22][CH:23]2[CH2:25][CH2:24]2)[CH:12]=1)[O:10][C:28]([O:29][C:30]1[CH:31]=[CH:32][C:33]([N+:36]([O-:38])=[O:37])=[CH:34][CH:35]=1)=[O:39]
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참가 물질

5

반응물 2

HCID 821294-Nitrophenyl chloroformateHCID 71092687(S)-3,5-dichloro-4-(2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-hydroxyethyl)pyridine 1-oxide

생성물 1

HCID 86679418(S)-3,5-dichloro-4-(2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-((4-nitrophenoxy)-carbonyloxy)ethyl)pyridine 1-oxide수율 77%

시약·촉매·용매 2

HCID 142844-(Dimethylamino)pyridine촉매
HCID 6344
Dichloromethane
용매

실험 절차

(S)-3,5-dichloro-4-(2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-hydroxyethyl)pyridine 1-oxide (1.5 g, 3.57 mmol), and DMAP (0.436 g, 3.57 mmol) were dissolved in DCM (50 ml), and 4-nitrophenyl carbonochloridate (0.863 g, 4.28 mmol) was added portion wise. The mixture was stirred at RT overnight. After 18 hours, the solvent was evaporated and the crude purified by silica gel flash chromatography (petroleum ether:EtOAc 3:7) affording (S)-3,5-dichloro-4-(2-(3-(cyclopropylmethoxy)-4-(difluoromethoxy)phenyl)-2-((4-nitrophenoxy)carbonyloxy)-ethyl)pyridine 1-oxide (1.609 g, 2.75 mmol, 77% yield, MS/ESI+ 585 [MH]+).

후처리

  1. waitAfter 18 hours
  2. customthe solvent was evaporated
  3. customthe crude purified by silica gel flash chromatography (petroleum ether:EtOAc 3:7)

출처 및 근거

ORD 기록
ord-86340182ee184b998b841d69a3ccf07f
출처 데이터셋
uspto-grants-2016_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09265768B2

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