HCID 18918301, 화합물 → Ethyl 3-(4-hydroxyphenoxy)butyrate

HRID 864863노트

반응식

HRID 864863 반응식
C([O:8][C:9]1[CH:23]=[CH:22][C:12]([O:13][CH:14]([CH3:21])[CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17])=[CH:11][CH:10]=1)C1C=CC=CC=1.[H][H]>C(O)C.[Pd]>[OH:8][C:9]1[CH:10]=[CH:11][C:12]([O:13][CH:14]([CH3:21])[CH2:15][C:16]([O:18][CH2:19][CH3:20])=[O:17])=[CH:22][CH:23]=1

참가 물질

5

반응물 2

HCID 18918301HCID 18918301, 화합물HCID 178418361HCID 178418361, 화합물

생성물 1

HCID 18918541Ethyl 3-(4-hydroxyphenoxy)butyrate수율 93.5%

시약·촉매·용매 2

HCID 23938Palladium촉매HCID 702Ethanol용매

실험 절차

To a solution of the product of step (i) (4.5 g) in absolute ethanol (200 ml) was added 10% palladium-on-charcoal catalyst (1.2 g) and the resulting suspension hydrogenated at ambient temperature and pressure until uptake of hydrogen ceased. The catalyst was removed by filtration through celite and the filtrate was concentrated in vacuo to give ethyl 3-(4-hydroxyphenoxy)butyrate as a low-melting crystalline solid (3.0 g) NMR (d6DMSO): δ1.25 (3H,t); 1.8-2.0 (2H,m); 2.5 (2H,t); 3.9 (2H,t); 4.1 (2H,q); 6.7 (4H,m); 8.8 (1H,br.s); m/e 224 (M)+.

후처리

  1. customhydrogenated at ambient temperature
  2. customThe catalyst was removed by filtration through celite
  3. concentrationthe filtrate was concentrated in vacuo

출처 및 근거

ORD 기록
ord-e22b9a3e3f6e40e198ef5a229e9e4fa1
출처 데이터셋
uspto-grants-1996_10
특허 번호
US05563141

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