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2,3-二溴丙酸甲酯

产品名称 2,3-二溴丙酸甲酯

CAS号1729-67-5

分子式C4H6Br2O2

分子量245.9

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  • Mass

    MS-NW-5856          
    methyl 2,3-dibromopropionate
    C4H6Br2O2           (Mass of molecular ion:    244)
    

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

          14.0       1.4
          15.0      51.6
          25.0       2.7
          26.0      17.1
          27.0      59.8
          28.0       4.1
          29.0       6.2
          30.0       2.0
          31.0       4.2
          39.0       2.5
          41.0       6.0
          42.0       1.1
          43.0       4.8
          45.0       2.5
          53.0       2.7
          54.0       1.5
          55.0      37.7
          56.0       1.8
          58.0       2.2
          59.0      82.5
          60.0       1.8
          79.0       2.3
          80.0       3.0
          81.0       2.4
          82.0       2.9
          85.0       2.3
          93.0       2.0
          94.0       1.8
          95.0       9.5
          96.0       1.6
          97.0       8.4
         105.0      15.0
         106.0      21.3
         107.0      15.4
         108.0      21.0
         121.0      12.6
         123.0      18.0
         125.0       6.8
         133.0       6.2
         135.0       6.3
         137.0       3.0
         139.0       3.0
         164.0       1.1
         165.0     100.0
         166.0       5.6
         167.0      95.3
         168.0       5.0
         185.0      11.6
         186.0       1.0
         187.0      23.1
         189.0      10.8
         213.0       2.7
         215.0       4.7
         217.0       2.4
    

90 MHz in CDCl3

parameter in CDCl3


  • 1H NMR 89.56 MHz
    C4 H6 Br2 O2 0.04 ml : 0.5 ml CDCl3
    methyl 2,3-dibromopropionate
    ChemicalStructure
        Assign.     Shift(ppm)
    A *1 4.452 B *1 3.919 C 3.844 D 3.697 J(A,B)=10.8HZ. J(A,D)=4.8HZ. J(B,D)=9.8HZ.

         Hz     ppm     Int.
    

        407.69   4.553     62
        402.94   4.500     76
        396.94   4.433     93
        392.19   4.380    109
        362.56   4.049     74
        352.75   3.939    135
        351.81   3.929     41
        344.38   3.846   1000
        342.00   3.819    124
        336.25   3.755    123
        331.50   3.702    118
        326.50   3.646     60
        321.69   3.592     44
    


  • 1H NMR 300 MHz
    C4 H6 Br2 O2 0.04 ml : 0.5 ml CDCl3
    methyl 2,3-dibromopropionate
    ChemicalStructure
        Parameter     ppm  Hz
    D(A) 4.452 D(B) 3.919 D(C) 3.697 J(A,B) -10.75 J(A,C) 4.75 J(B,C) 9.81 D(D) 3.844

         Hz     ppm     Int.
    

       1343.56   4.479     77
       1338.80   4.463     80
       1332.82   4.443     88
       1328.06   4.427     91
       1186.15   3.954     77
       1176.34   3.921    111
       1175.45   3.918     81
       1165.61   3.885     91
       1153.20   3.844   1000
       1116.00   3.720     98
       1111.24   3.704     95
       1106.20   3.687     74
       1101.43   3.671     70
    

in CDCl3



liquid film



4880 A,200 M,liquid