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2,5-二氢呋喃

CAS号1708-29-8

分子式C4H6O

分子量70.09

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  • Mass

    MS-NW-5071          
    2,5-dihydrofuran
    C4H6O               (Mass of molecular ion:     70)
    

       Source Temperature: 260 °C
       Sample Temperature: 190 °C
       Reservoir, 75 eV
    

          14.0       1.8
          15.0       3.5
          18.0       1.9
          25.0       1.0
          26.0       4.3
          27.0      12.2
          28.0       3.7
          29.0      18.8
          31.0       2.7
          37.0       5.9
          38.0      11.4
          39.0      83.7
          40.0      26.5
          41.0     100.0
          42.0      77.0
          43.0       3.6
          44.0       2.5
          50.0       1.7
          51.0       1.3
          68.0       3.5
          69.0      26.2
          70.0      91.3
          71.0       5.6
          72.0       1.7
    

400 MHz in CDCl3

90 MHz in CDCl3


  • 1H NMR 399.65 MHz
    C4 H6 O 0.05 ml : 0.5 ml CDCl3
    2,5-dihydrofuran
    ChemicalStructure
        Assign.     Shift(ppm)
    A 5.89 B 4.63

         Hz     ppm     Int.
    

       2359.38   5.904     39
       2358.28   5.901     40
       2356.81   5.898     55
       2354.00   5.891    529
       2351.32   5.884     70
       2349.98   5.881     55
       2348.75   5.878     50
       1857.30   4.648     54
       1856.32   4.645     56
       1852.66   4.636    711
       1851.68   4.634   1000
       1848.27   4.625     95
       1847.53   4.623     90
       1842.90   4.612     28
    


  • 1H NMR 89.56 MHz
    C4 H6 O 0.04 ml : 0.5 ml CDCl3
    2,5-dihydrofuran
    ChemicalStructure
        Assign.     Shift(ppm)
    A 5.885 B 4.636

         Hz     ppm     Int.
    

        531.50   5.935     22
        530.13   5.920     25
        528.69   5.904     83
        528.19   5.898    165
        527.38   5.889    421
        526.50   5.879    178
        524.69   5.859     41
        523.38   5.844     26
        522.06   5.830     30
        420.19   4.692     27
        419.31   4.682     25
        418.19   4.670     34
        415.81   4.643   1000
        414.94   4.634    938
        412.56   4.607     51
        411.38   4.594     30
        410.63   4.585     27
    

in CDCl3



KBr disc



liquid film



4880 A,200 M,liquid