Dichloromethane → 3-[3-(1,3-Dioxolan-2-yl)-1,2-benzisothiazol-5-yl]-1-methyl-6-(trifluoromethyl)uracil

HRID 49005

반응식

HRID 49005 반응식
BrC(Br)[C:3]1[C:7]2[CH:8]=[C:9]([N:12]3[C:17](=[O:18])[CH:16]=[C:15]([C:19]([F:22])([F:21])[F:20])[N:14]([CH3:23])[C:13]3=[O:24])[CH:10]=[CH:11][C:6]=2[S:5][N:4]=1.ClCCl.[CH3:29][O:30][CH2:31][O:32][CH3:33]>FC(F)(F)S([O-])(=O)=O.[Ag+].C(O)CO>[O:30]1[CH2:29][CH2:33][O:32][CH:31]1[C:3]1[C:7]2[CH:8]=[C:9]([N:12]3[C:17](=[O:18])[CH:16]=[C:15]([C:19]([F:21])([F:22])[F:20])[N:14]([CH3:23])[C:13]3=[O:24])[CH:10]=[CH:11][C:6]=2[S:5][N:4]=1

참가 물질

6

반응물 3

HCID 6344DichloromethaneHCID 8020DimethoxymethaneHCID 221198393-[3-(dibromomethyl)-1,2-benzisothiazol-5-yl]-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione

생성물 1

HCID 206342023-[3-(1,3-Dioxolan-2-yl)-1,2-benzisothiazol-5-yl]-1-methyl-6-(trifluoromethyl)uracil수율 17.5%

시약·촉매·용매 2

HCID 76223Silver(I) trifluoromethanesulfonate촉매4회HCID 174Ethylene Glycol용매3회

실험 절차

A mixture of 3-[3-(dibromomethyl)-1,2-benzisothiazol-5-yl]-1-methyl-6-(trifluoromethyl)-2,4(1H,3H)-pyrimidinedione (0.500 g, 10.0 mmol), silver trifluoromethanesulfonate (0.500 g, 19.5 mmol), ethylene glycol (5.00 ml), dichloromethane and dimethoxymethane is stirred three days at room temperature and treated with additional silver trifluoromethanesulfonate (0.300 g, 11.7 mmol). The resultant mixture is stirred one day at room temperature and treated with additional silver trifluoromethanesulfonate (0.400 g, 15.6 mmol) and ethylene glycol (1.00 ml), stirred another day at room temperature and treated again with silver trifluoromethanesulfonate (0.300 g, 11.7 mmol) and ethylene glycol (1.0 ml). After stirring an additional day the mixture is filtered. The filtrate is diluted with dichloromethane, washed with water, dried over anhydrous magnesium sulfate and concentrated in vacuo. The residue is triturated with hexanes-ethyl acetate to afford the title compound as a white solid (0.070 g, 17.5%, mp 213-216° C.) which is identified by NMR spectral analysis.

후처리

  1. stirringstirred another day at room temperature
  2. stirringAfter stirring an additional day the mixture
  3. filtrationis filtered
  4. additionThe filtrate is diluted with dichloromethane
  5. washwashed with water
  6. dry with materialdried over anhydrous magnesium sulfate
  7. concentrationconcentrated in vacuo
  8. customThe residue is triturated with hexanes-ethyl acetate

출처 및 근거

ORD 기록
ord-16b4da2259f54c529f075d0511a069de
출처 데이터셋
uspto-grants-2004_03
특허 번호
US06706663B2

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