Phthalimide → trans-N-[3-(1H-pyrazol-1-yl)cyclopentyl]phthalimide

HRID 655150노트

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HRID 655150 반응식
[N:1]1([C@@H:6]2[CH2:10][CH2:9][C@H:8](O)[CH2:7]2)[CH:5]=[CH:4][CH:3]=[N:2]1.[C:12]1(=[O:22])[NH:16][C:15](=[O:17])[C:14]2=[CH:18][CH:19]=[CH:20][CH:21]=[C:13]12.CC(OC(/N=N/C(OC(C)C)=O)=O)C.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1COCC1.O>[N:1]1([C@H:6]2[CH2:10][CH2:9][C@H:8]([N:16]3[C:15](=[O:17])[C:14]4=[CH:18][CH:19]=[CH:20][CH:21]=[C:13]4[C:12]3=[O:22])[CH2:7]2)[CH:5]=[CH:4][CH:3]=[N:2]1

참가 물질

7

반응물 4

HCID 6809PhthalimideHCID 11776TriphenylphosphineHCID 5363146Diisopropyl azodicarboxylateHCID 67133889cis-3-(1H-pyrazol-1-yl)cyclopentanol

생성물 1

HCID 67133690trans-N-[3-(1H-pyrazol-1-yl)cyclopentyl]phthalimide수율 52.4%

시약·촉매·용매 2

HCID 962Water용매HCID 8028Tetrahydrofuran용매

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온도
0 °C

실험 절차

A solution of cis-3-(1H-pyrazol-1-yl)cyclopentanol (5.01 g, 32.9 mmol) in THF (150 mL) was cooled to 0° C. and treated with phthalimide (5.33 g, 36.2 mmol), diisopropylazodicarboxylate (7.1 mL, 36.1 mmol) and triphenylphosphine (9.48 g, 36.1 mmol). The reaction mixture was stirred at 0° C. for 4 h. The reaction mixture was poured water and then extracted with EtOAc. The organic layer was dried over anhyd Na2SO4 followed by the removal of solvent. The crude product was purified by column chromatography (Chromatrex, Hexane/EtOAc=5/1) to yield trans-N-[3-(1H-pyrazol-1-yl)cyclopentyl]phthalimide (4.85 g, 52%) as a colorless powder.

후처리

  1. extractionextracted with EtOAc
  2. dry with materialThe organic layer was dried over anhyd Na2SO4
  3. customfollowed by the removal of solvent
  4. customThe crude product was purified by column chromatography (Chromatrex, Hexane/EtOAc=5/1)

출처 및 근거

ORD 기록
ord-ba091a7c1c0f4b9cbcd287eff98e2698
출처 데이터셋
uspto-grants-2011_12
특허 번호
US08071591B2

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