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Tert-butyl 4-[(3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate → tert-butyl 4-[[(2Z)-2-(2H-indazol-3-ylmethylidene)-3-oxo-1-benzofuran-7-yl]methyl]piperazine-1-carboxylate

HRID 1749938
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HRID 1749938 반응식
[O:1]=[C:2]1[C:6]2[CH:7]=[CH:8][CH:9]=[C:10]([CH2:11][N:12]3[CH2:17][CH2:16][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:14][CH2:13]3)[C:5]=2[O:4][CH2:3]1.[NH:25]1[C:33]2[C:28](=[CH:29][CH:30]=[CH:31][CH:32]=2)[C:27]([CH:34]=O)=[N:26]1>CO.N1CCCCC1>[NH:25]1[C:33]2[C:28](=[CH:29][CH:30]=[CH:31][CH:32]=2)[C:27](/[CH:34]=[C:3]2\[O:4][C:5]3[C:10]([CH2:11][N:12]4[CH2:13][CH2:14][N:15]([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:16][CH2:17]4)=[CH:9][CH:8]=[CH:7][C:6]=3[C:2]\2=[O:1])=[N:26]1
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5

반응물 2

HCID 60155978Tert-butyl 4-[(3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylateHCID 178520025HCID 178520025, 화합물

생성물 1

HCID 178452293tert-butyl 4-[[(2Z)-2-(2H-indazol-3-ylmethylidene)-3-oxo-1-benzofuran-7-yl]methyl]piperazine-1-carboxylate수율 67%

시약·촉매·용매 2

HCID 8082Piperidine촉매HCID 887Methanol
용매

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온도
50 °C

실험 절차

A solution of tert-butyl 4-[(3-oxo-2,3-dihydrobenzofuran-7-yl)methyl]piperazine-1-carboxylate (0.0359 g, 0.108 mmol) in methanol (2 mL) was added with 1H-indazole-3-carboxaldehyde (0.0166 g, 0.113 mmol) and piperidine (5 drops), and the mixture was stirred at 50° C. for 2 hours. The reaction mixture was concentrated, and the resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate) to obtain tert-butyl (Z)-4-({2-[(1H-indazol-3-yl)methylene]-3-oxo-2,3-dihydrobenzofuran-7-yl}methyl)piperazine-1-carboxylate (0.0332 g, 67%).

후처리

  1. concentrationThe reaction mixture was concentrated
  2. customthe resulting residue was purified by silica gel column chromatography (hexane/ethyl acetate)

출처 및 근거

ORD 기록
ord-9865031ff541471b92a6cfebbfaeea30
출처 데이터셋
uspto-grants-2015_10
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US09156827B2

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