Tetrahydrofuran → 2-(3-Chloropyridin-4-yl)-5-(trifluoromethylthio)benzoxazole

HRID 2094405노트

반응식

HRID 2094405 반응식
[Cl:1][C:2]1[CH:22]=[N:21][CH:20]=[CH:19][C:3]=1[C:4]([NH:6][C:7]1[CH:12]=[C:11]([S:13][C:14]([F:17])([F:16])[F:15])[CH:10]=[CH:9][C:8]=1[OH:18])=O.O1CCCC1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.N(C(OCC)=O)=NC(OCC)=O>C1(C)C=CC=CC=1>[Cl:1][C:2]1[CH:22]=[N:21][CH:20]=[CH:19][C:3]=1[C:4]1[O:18][C:8]2[CH:9]=[CH:10][C:11]([S:13][C:14]([F:17])([F:16])[F:15])=[CH:12][C:7]=2[N:6]=1

참가 물질

6

반응물 4

HCID 8028TetrahydrofuranHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 66881883HCID 66881883, 화합물

생성물 1

HCID 668809412-(3-Chloropyridin-4-yl)-5-(trifluoromethylthio)benzoxazole수율 93.9%

시약·촉매·용매 1

HCID 1140Toluene용매

실험 절차

To a mixture of 0.64 g of 3-chloro-N-[2-hydroxy-5-(trifluoromethylthio)phenyl]isonicotinamide, 6 ml of tetrahydrofuran and 0.53 g of triphenylphosphine, 0.87 g of 40% toluene solution of diethyl azodicarboxylate was added dropwise at room temperature and stirred for 1.5 hours. The reaction mixture was concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.57 g of 2-(3-chloropyridin-4-yl)-5-(trifluoromethylthio)benzoxazole (hereinafter, referred to as “active compound 77”).

후처리

  1. additionwas added dropwise at room temperature
  2. concentrationThe reaction mixture was concentrated under reduced pressure

출처 및 근거

ORD 기록
ord-8949887ad79649cf8812fc17a7fb2ca8
출처 데이터셋
uspto-grants-2013_05
특허 번호
US08445522B2

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