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2-Isopropoxy-6-(trimethylstannyl)pyrazine → 3-(3-(6-isopropoxypyrazin-2-yl)-1-tosyl-1H-indol-5-yl)-1,2,4-oxadiazol-5-amine

HRID 634280
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인쇄 미리보기

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HRID 634280 반응식
I[C:2]1[C:10]2[C:5](=[CH:6][CH:7]=[C:8]([C:11]3[N:15]=[C:14]([NH2:16])[O:13][N:12]=3)[CH:9]=2)[N:4]([S:17]([C:20]2[CH:26]=[CH:25][C:23]([CH3:24])=[CH:22][CH:21]=2)(=[O:19])=[O:18])[CH:3]=1.[CH:27]([O:30][C:31]1[CH:36]=[N:35][CH:34]=[C:33]([Sn](C)(C)C)[N:32]=1)([CH3:29])[CH3:28]>CN(C=O)C.[Cu]I.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1>[CH:27]([O:30][C:31]1[N:32]=[C:33]([C:2]2[C:10]3[C:5](=[CH:6][CH:7]=[C:8]([C:11]4[N:15]=[C:14]([NH2:16])[O:13][N:12]=4)[CH:9]=3)[N:4]([S:17]([C:20]3[CH:26]=[CH:25][C:23]([CH3:24])=[CH:22][CH:21]=3)(=[O:19])=[O:18])[CH:3]=2)[CH:34]=[N:35][CH:36]=1)([CH3:29])[CH3:28]
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참가 물질

6

반응물 2

HCID 683280402-Isopropoxy-6-(trimethylstannyl)pyrazineHCID 683284823-(3-iodo-1-tosyl-1H-indol-5-yl)-1,2,4-oxadiazol-5-amine

생성물 1

HCID 683285133-(3-(6-isopropoxypyrazin-2-yl)-1-tosyl-1H-indol-5-yl)-1,2,4-oxadiazol-5-amine수율 59%

시약·촉매·용매 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)촉매
HCID 178418397
HCID 178418397, 화합물
촉매
HCID 6228Dimethylformamide용매

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온도
90 °C

실험 절차

Argon gas was bubbled through a solution of 3-(3-iodo-1-tosyl-1H-indol-5-yl)-1,2,4-oxadiazol-5-amine (250 mg, 0.52 mmol) and 2-isopropoxy-6-(trimethylstannyl)pyrazine (188 mg, 0.62 mmol) in dry DMF (2.5 mL) for 15 min. To the mixture was added CuI (99 mg, 0.52 mmol) and Pd(PPh3)4 (60 mg, 0.052 mmol) and argon gas was further bubbled for additional 15 min. The reaction was heated at 90° C. for 1 h then cooled to RT. The reaction was quenched with ice cold water. The resulting suspension was filtered and washed with water. The solid was purified with basic alumina column chromatography (eluent: 20% EtOAc in petroleum ether) to give 3-(3-(6-isopropoxypyrazin-2-yl)-1-tosyl-1H-indol-5-yl)-1,2,4-oxadiazol-5-amine (150 mg, 59%). MS (ESI, pos. ion) m/z: 491.1 (M+1).

후처리

  1. customwas further bubbled for additional 15 min
  2. temperaturethen cooled to RT
  3. customThe reaction was quenched with ice cold water
  4. filtrationThe resulting suspension was filtered
  5. washwashed with water
  6. customThe solid was purified with basic alumina column chromatography (eluent: 20% EtOAc in petroleum ether)

출처 및 근거

ORD 기록
ord-3dadf6a01d2842959f847e0ffd3f2fbc
출처 데이터셋
uspto-grants-2016_04
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09321756B2

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