Tetrafluoroboric acid →

HRID 257647

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HRID 257647 반응식
[CH3:1][Mg]Br.[CH3:4][C:5]([C:8]1[O:9][C:10]2[C:11](=[CH:15][C:16]3[CH2:17][CH2:18][CH2:19][N:20]4[C:25]=3[C:24]=2[CH2:23][CH2:22][CH2:21]4)[C:12](=O)[CH:13]=1)([CH3:7])[CH3:6].[F:26][B-:27]([F:30])([F:29])[F:28].[H+]>CCOCC.O1CCCC1.O>[F:26][B-:27]([F:30])([F:29])[F:28].[CH3:4][C:5]([CH:8]1[CH:13]=[C:12]([CH3:1])[C:11]2=[CH:15][C:16]3[CH2:17][CH2:18][CH2:19][N:20]4[C:25]=3[C:24]([CH3+:23][CH2:22][CH2:21]4)=[C:10]2[O:9]1)([CH3:7])[CH3:6]

참가 물질

6

반응물 3

HCID 28118Tetrafluoroboric acidHCID 1978368311-[1,1-dimethylethyl]-9-oxo-2,3,6,7-tetrahydro-1H,5H-[1]benzopyrano[6,7,8-ij]quinolizineHCID 178418573HCID 178418573, 화합물2회

생성물 0

아직 생성물 데이터가 없습니다.

시약·촉매·용매 3

HCID 962Water용매HCID 3283Diethyl Ether용매2회HCID 8028Tetrahydrofuran용매

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온도
0 °C

실험 절차

Methyl magnesium bromide (5.0 mL of a 3.0M solution in ether, 15 mmol) was added dropwise at 0° C. to a solution of 11-[1,1-dimethylethyl]-9-oxo-2,3,6,7-tetrahydro-1H,5H-[1]benzopyrano[6,7,8-ij]quinolizine (2.68 g, 9.03 mmol, prepared in Example 34 above) in dry tetrahydrofuran (10 mL) and the solution was allowed to stand at room temperature for about 17 hours. The reaction mixture was then cooled again to 0° C. and more methyl magnesium bromide (1 mL of a 3M solution in ether, 3 mmol) was added dropwise. The reaction mixture was allowed to attain room temperature and stirred for a further 8 hours, after which time the reaction mixture was poured into tetrafluoroboric acid (44 mL of a 4.4% solution in water) and the resultant mixture was extracted with dichloromethane. The organic phase was separated and dried over sodium sulfate. Removal of solvent, followed by trituration of the residue with ethyl acetate and filtration, gave 11-[1,1-dimethylethyl]-9-methyl-2,3,6,7-tetrahydro-1H,5H-[1]benzopyrano[6,7,8-ij]quinolizinium tetrafluoroborate (1.49 g, 44% yield) as a red solid which melted at 168°-170° C. The structure of this compound was confirmed by mass spectroscopy and by 1H and 13C NMR spectroscopy.

후처리

  1. customto attain room temperature
  2. extractionwas extracted with dichloromethane
  3. customThe organic phase was separated
  4. dry with materialdried over sodium sulfate
  5. customRemoval of solvent
  6. filtrationfollowed by trituration of the residue with ethyl acetate and filtration

출처 및 근거

ORD 기록
ord-2194203e73fa4736b97d85650fec57bc
출처 데이터셋
uspto-grants-1993_11
특허 번호
US05262549

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