Table 3. Relative Amount of Deoxyaldonic Acids in the Crude Products of Glucose Ammoxidation at 70 °C, 100 °C, and 140 °C (0.2 MPa O2, 3 h).
| relative
percentagea |
|||||
|---|---|---|---|---|---|
| Rt (min) | deoxyaldonic acids | 70 °C | 100 °C | 140 °C | |
| C3 | 11.87 | lactic acid (35) | 0.5 | 1.2 | 3.1 |
| C3 | 14.28 | 3-hydroxypropanoic acid (38) | 0.3 | 2.5 | 2.8 |
| C4 | 21.78 | 2,4-dihydroxybutyric acid (45) | 0.1 | 0.9 | 5.9 |
| C4 | 22.34 | 3,4-dihydroxybutyric acid (46) | 1.0 | 1.8 | 1.4 |
| C5 | 27.79 | 2-deoxypentonic acid (53) | 1.8 | 8.8 | 1.9 |
| C5 | 27.58 | 3-deoxypentonic acid, epimer I | 0.4 | 0.4 | 1.6 |
| C5 | 27.96 | 3-deoxypentonic acid, epimer II (54) | 0.8 | 0.8 | 1.5 |
| C6 | 32.14 | 3-deoxyhexonic acid, epimer I (60) | 0.7 | 0.5 | 1.4 |
| C6 | 32.25 | 3-deoxyhexonic acid, epimer II (61) | 1.3 | 5.4 | 24.7 |
| sum | 6.8 | 22.2 | 44.1 | ||
a
Values were calculated as ratio of the relative peak areas of aldonic acids and the internal standard phenyl α-glucoside (200 μg).