Water → methyl (2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-propoxyiminoacetate

HRID 621039노트

반응식

HRID 621039 반응식
O.[CH3:2][O:3][C:4](=[O:15])[C:5](=[N:10][O:11][CH2:12][CH2:13][CH3:14])[C:6]([CH2:8]Cl)=O.[NH2:16][C:17]([NH2:19])=[S:18].C(=O)([O-])[O-].[K+].[K+]>C(O)C>[CH3:2][O:3][C:4](=[O:15])/[C:5](/[C:6]1[N:16]=[C:17]([NH2:19])[S:18][CH:8]=1)=[N:10]\[O:11][CH2:12][CH2:13][CH3:14]

참가 물질

6

반응물 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 2723790ThioureaHCID 542547764-Chloro-2-(n-propoxyimino)acetoacetic acid methyl ester

생성물 1

HCID 14230751methyl (2Z)-2-(2-amino-1,3-thiazol-4-yl)-2-propoxyiminoacetate

시약·촉매·용매 1

HCID 702Ethanol용매

반응 조건

온도
40 °C

실험 절차

To a mixture solution of 20 ml of water and 25 ml of ethanol are added 7.0 g of 4-chloro-2-(n-propoxyimino)acetoacetic acid methyl ester, 2.4 g of thiourea and 4.3 g of sodium acetate(trihydrate). The mixture is stirred for one hour at 40° C. The reaction mixture is, under cooling, adjusted to pH 6.5 with a saturated aqueous solution of potassium carbonate, followed by stirring for 30 minutes. The resulting crystals are collected by filtration, washed with water and isopropyl ether in this order, and dried to yield 2-(2-amino-4-thiazolyl)-(Z)-2-(n-propoxyimino)acetic acid methyl ester as crystals, m.p. 115°-116° C.

후처리

  1. temperatureunder cooling
  2. stirringby stirring for 30 minutes
  3. filtrationThe resulting crystals are collected by filtration
  4. washwashed with water and isopropyl ether in this order
  5. customdried

출처 및 근거

ORD 기록
ord-11d6ee7c50e648eca1000e890bba0e32
출처 데이터셋
uspto-grants-1989_04
특허 번호
US04822790

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