4-Amino-3-hydroxypyridine → N,N-Diethyl-N'-(3-hydroxypyridin-4-yl)methanimidamide

HRID 362192

반응식

HRID 362192 반응식
[NH2:1][C:2]1[CH:7]=[CH:6][N:5]=[CH:4][C:3]=1[OH:8].CO[CH:11](OC)[N:12]([CH2:15][CH3:16])[CH2:13][CH3:14]>C1(C)C=CC=CC=1>[CH2:13]([N:12]([CH:11]=[N:1][C:2]1[CH:7]=[CH:6][N:5]=[CH:4][C:3]=1[OH:8])[CH2:15][CH3:16])[CH3:14]

참가 물질

4

반응물 2

HCID 27624194-Amino-3-hydroxypyridineHCID 12747026N-(Dimethoxymethyl)-N-ethylethanamine

생성물 1

HCID 15380930N,N-Diethyl-N'-(3-hydroxypyridin-4-yl)methanimidamide수율 61.5%

시약·촉매·용매 1

HCID 1140Toluene용매

실험 절차

A mixture of 4-amino-3-pyridinol (3.90 g), N,N-diethylformamide dimethyl acetal (11.68 g) and toluene (20 mL) was heated under nitrogen for 2 hours. The solution was concentrated under reduced pressure. The resulting liquid was filtered through silica gel with 10% ethanol in tetrahydrofuran to give a solid. Recrystallization of the purified product from ethyl acetate/hexanes afforded 4.21 g of crystalline solid, m.p. 104°-106° C.

후처리

  1. temperaturewas heated under nitrogen for 2 hours
  2. concentrationThe solution was concentrated under reduced pressure
  3. filtrationThe resulting liquid was filtered through silica gel with 10% ethanol in tetrahydrofuran
  4. customto give a solid
  5. customRecrystallization of the purified product from ethyl acetate/hexanes

출처 및 근거

ORD 기록
ord-dde421b6039e4c96ad8bffc105b8387a
출처 데이터셋
uspto-grants-1999_02
특허 번호
US05869480

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