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Vanillin → Ethyl 1-{4-[(4-formyl-2-methoxyphenoxy)methyl]-5-methyl-1,3-thiazol-2-yl}piperidine-4-carboxylate

HRID 2221639
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인쇄 미리보기

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HRID 2221639 반응식
Cl[CH2:2][C:3]1[N:4]=[C:5]([N:9]2[CH2:14][CH2:13][CH:12]([C:15]([O:17][CH2:18][CH3:19])=[O:16])[CH2:11][CH2:10]2)[S:6][C:7]=1[CH3:8].[O:20]=[CH:21][C:22]1[CH:30]=[CH:29][C:27]([OH:28])=[C:24]([O:25][CH3:26])[CH:23]=1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[CH:21]([C:22]1[CH:30]=[CH:29][C:27]([O:28][CH2:2][C:3]2[N:4]=[C:5]([N:9]3[CH2:14][CH2:13][CH:12]([C:15]([O:17][CH2:18][CH3:19])=[O:16])[CH2:11][CH2:10]3)[S:6][C:7]=2[CH3:8])=[C:24]([O:25][CH3:26])[CH:23]=1)=[O:20]
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참가 물질

6

반응물 4

HCID 1183VanillinHCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 23076563Ethyl 1-(4-chloromethyl-5-methyl-1,3-thiazol-2-yl)piperidine-4-carboxylate

생성물 1

HCID 86605740Ethyl 1-{4-[(4-formyl-2-methoxyphenoxy)methyl]-5-methyl-1,3-thiazol-2-yl}piperidine-4-carboxylate수율 83.1%

시약·촉매·용매 1

HCID 962
Water
용매

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온도
90 °C

실험 절차

A mixture of ethyl 1-(4-chloromethyl-5-methyl-1,3-thiazol-2-yl)piperidine-4-carboxylate (1.48 g), vanillin (0.75 g), anhydrous potassium carbonate (0.68 g) and N,N-dimethylformamide (50 mL) was stirred at 90° C. for 2 hrs. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography and eluted with ethyl acetate-hexane (1:3, v/v) to give ethyl 1-{4-[(4-formyl-2-methoxyphenoxy)methyl]-5-methyl-1,3-thiazol-2-yl}piperidine-4-carboxylate as colorless crystals (1.70 g, yield 83%). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 97-98° C.

후처리

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated
  5. washeluted with ethyl acetate-hexane (1:3

출처 및 근거

ORD 기록
ord-02f4c8a4706546ea8a995bbe86189186
출처 데이터셋
uspto-grants-2008_05
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US07368578B2

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