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2-Chlorobenzaldehyde → 2-[(2-chloro-phenyl)-hydroxy-methyl]-3-(2-methylsulfanyl-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one

HRID 1455259
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HRID 1455259 반응식
I[C:2]1[C:9](=[O:10])[N:5]2[CH2:6][CH2:7][CH2:8][N:4]2[C:3]=1[C:11]1[CH:16]=[CH:15][N:14]=[C:13]([S:17][CH3:18])[N:12]=1.C([Mg]Cl)(C)C.[Cl:24][C:25]1[CH:32]=[CH:31][CH:30]=[CH:29][C:26]=1[CH:27]=[O:28]>C1COCC1>[Cl:24][C:25]1[CH:32]=[CH:31][CH:30]=[CH:29][C:26]=1[CH:27]([OH:28])[C:2]1[C:9](=[O:10])[N:5]2[CH2:6][CH2:7][CH2:8][N:4]2[C:3]=1[C:11]1[CH:16]=[CH:15][N:14]=[C:13]([S:17][CH3:18])[N:12]=1
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참가 물질

5

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HCID 69962-ChlorobenzaldehydeHCID 575317902-iodo-3-(2-methylsulfanyl-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-oneHCID 178418918HCID 178418918, 화합물

생성물 1

HCID 575317942-[(2-chloro-phenyl)-hydroxy-methyl]-3-(2-methylsulfanyl-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one수율 58%

시약·촉매·용매 1

HCID 8028
Tetrahydrofuran
용매
2회

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온도
-40 °C

실험 절차

To a cold (−40° C.) suspension of 2-iodo-3-(2-methylsulfanyl-pyrimidin-4-yl)-6,7-dihydro-5H-pyrazolo[1,2-a]pyrazol-1-one, 21, (0.40 g, 1.07 mmol) in THF (3 mL) is added dropwise isopropyl-magnesium chloride (0.59 mL of a 2M solution in THF, 1.18 mmol). After stirring for 30 min at −40° C., a solution of 2-chlorobenzaldehyde (0.16 mL, 1.40 mmol) is added dropwise. The reaction mixture is allowed to warm to 0° C. over 1 h period. The mixture is quenched by pouring into aqueous saturated NH4Cl. The aqueous phase is extracted three times with EtOAc and the combined organic phases are dried (MgSO4), filtered and concentrated in vacuo. The crude residue is purified over silica (10% MeOH/chloroform) to afford 240 mg (58% yield) of desired product. 1H NMR (300 MHz, CDCl3) δ 8.56 (d, J=5.1 Hz, 1H), 7.78 (dd, J=7.2, 1.8 Hz, 1H), 7.34-7.18 (m, 2H), 7.01 (d, J=5.1 Hz, 1H), 6.21 (s, 1H), 4.20-4.01 (m, 5H), 2.80-2.70 (m, 2H), 2.58 (s, 3H); ESI+ MS: m/z (rel intensity) 371.1 (100, M++H).

후처리

  1. temperatureto warm to 0° C. over 1 h period
  2. customThe mixture is quenched
  3. additionby pouring into aqueous saturated NH4Cl
  4. extractionThe aqueous phase is extracted three times with EtOAc
  5. dry with materialthe combined organic phases are dried (MgSO4)
  6. filtrationfiltered
  7. concentrationconcentrated in vacuo
  8. customThe crude residue is purified over silica (10% MeOH/chloroform)

출처 및 근거

ORD 기록
ord-ead8f192c9114bf9a4d87d9af0f47149
출처 데이터셋
uspto-grants-2009_01
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07482356B2

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