Water → 6-nitro-2,2-dimethyl-3-(N'-ethylureido)methyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran

HRID 1655389노트

반응식

HRID 1655389 반응식
[N+:1]([C:4]1[CH:5]=[CH:6][C:7]2[O:12][C:11]([CH3:14])([CH3:13])[C:10]([CH2:15][NH2:16])=[C:9]([N:17]3[CH:22]=[CH:21][CH:20]=[CH:19][C:18]3=[O:23])[C:8]=2[CH:24]=1)([O-:3])=[O:2].[CH2:25]([N:27]=[C:28]=[O:29])[CH3:26].O>ClCCl>[N+:1]([C:4]1[CH:5]=[CH:6][C:7]2[O:12][C:11]([CH3:13])([CH3:14])[C:10]([CH2:15][NH:16][C:28]([NH:27][CH2:25][CH3:26])=[O:29])=[C:9]([N:17]3[CH:22]=[CH:21][CH:20]=[CH:19][C:18]3=[O:23])[C:8]=2[CH:24]=1)([O-:3])=[O:2]

참가 물질

5

반응물 3

HCID 962WaterHCID 8022Ethyl isocyanateHCID 193870526-nitro-2,2-dimethyl-3-aminomethyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran

생성물 1

HCID 193869776-nitro-2,2-dimethyl-3-(N'-ethylureido)methyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran수율 55.8%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

A solution of 6-nitro-2,2-dimethyl-3-aminomethyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran (0.5 g, 1.53 mmol) in dichloromethane (10 ml) was stirred with ethyl isocyanate (0.12 ml, 1.53 mmol) at room temperature for two hours. Water was added and the organic phase separated, dried and evaporated to give crude product, which was chromatographed on silica gel, eluting with dichloromethane/methanol (95/5) to give 0.34 g of 6-nitro-2,2-dimethyl-3-(N'-ethylureido)methyl-4-(2-oxo-1,2-dihydropyridin-1-yl)-2H-1-benzopyran, m.p. 197° C.

후처리

  1. customthe organic phase separated
  2. customdried
  3. customevaporated
  4. customto give crude product, which
  5. customwas chromatographed on silica gel
  6. washeluting with dichloromethane/methanol (95/5)

출처 및 근거

ORD 기록
ord-12595719f9e64eb6ba684e50cbc8e970
출처 데이터셋
uspto-grants-1993_10
특허 번호
US05250547

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