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丁烯酮

产品名称 丁烯酮

CAS号78-94-4

分子式C4H6O

分子量70.09

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  • Mass

    MS-IW-3441          
    3-buten-2-one
    C4H6O               (Mass of molecular ion:     70)
    

       Source Temperature: 230 °C
       Sample Temperature: 160 °C
       Reservoir, 75 eV
    

          14.0       2.6
          15.0      10.2
          25.0       1.6
          26.0       8.5
          27.0      49.8
          28.0       2.5
          29.0       1.5
          37.0       3.0
          38.0       3.3
          39.0       6.6
          40.0       1.3
          41.0       5.7
          42.0      12.4
          43.0      83.2
          44.0       2.6
          49.0       1.8
          50.0       3.6
          51.0       1.9
          53.0       2.6
          55.0     100.0
          56.0       4.6
          69.0       1.2
          70.0      57.8
          71.0       2.8
          97.0       4.5
         140.0       1.5
    

90 MHz in CDCl3

parameter neat


  • 1H NMR 89.56 MHz
    C4 H6 O 0.04 ml : 0.5 ml CDCl3
    3-buten-2-one
    ChemicalStructure
        Assign.     Shift(ppm)
    A 6.298 B 6.211 C 5.908 D 2.286 J(A,B)=17.4HZ. J(A,C)=8.6HZ. J(B,C)=3.3HZ.

         Hz     ppm     Int.
    

        567.56   6.338     82
        560.81   6.262    124
        559.00   6.242    166
        557.44   6.225    195
        543.38   6.068     37
        534.13   5.964    131
        530.81   5.927     77
        525.56   5.869     77
        522.25   5.832     71
        204.75   2.287   1000
    


  • 1H NMR 300 MHz
    C4 H6 O neat
    3-buten-2-one
    ChemicalStructure
        Parameter     ppm  Hz
    D(A) 5.90 D(B) 6.27 D(C) 6.30 J(A,B) 1.27 J(A,C) 10.70 J(B,C) 18.70 D(D) 2.25 KOSSANYI,J. BULL.SOC.CHIM.FR. 1965, 704

         Hz     ppm     Int.
    

       1909.59   6.365     14
       1890.90   6.303    142
       1886.32   6.288    149
       1882.88   6.276    226
       1882.38   6.275    225
       1867.71   6.226     18
       1775.74   5.919     93
       1771.77   5.906     84
       1767.80   5.893     78
       1763.78   5.879     76
        675.01   2.250   1000
    

in CDCl3



CCl4 solution



liquid film





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