NGHIÊN CỨU ỨNG DỤNG NHỰA TRAO ĐỔI ION TRONG PHÂN LẬP ACID SHIKIMIC TỪ ĐẠI HỒI [FULL]
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Hình 3.5 Acid shikimic thô.<br />
Hình 3.6 Acid shikimic tinh khi t.<br />
49<br />
Ki m tra ch<br />
ng s n ph m<br />
S n ph n hành ki m tra ch ng b ng các<br />
v IR, ph NMR. K t qu<br />
Acid<br />
C 7H 10O 5, MW 174,15)<br />
[3R-(3 ,4 ,5 )]-3,4,5-Trihydroxy-1-cyclohexen-1-carboxylic<br />
HO<br />
2<br />
3<br />
7<br />
COOH<br />
1<br />
4<br />
OH<br />
Index: -183,8°).<br />
6<br />
5<br />
OH<br />
(C=O acid ), 1645,28 (C=C anken )<br />
C<br />
(500 MHz,<br />
MeOD, ppm)<br />
184,3°C (Merck Index 183 - 184,5°C) [<br />
D 20 = -<br />
max (cm -1 ): 3477,66 3373,50 (OH), 1678,07<br />
1 H-NMR)<br />
1 H-<br />
13 C NMR 1 H NMR, ppm<br />
32]<br />
(75 MHz, D 2 O,<br />
ppm)<br />
1 130,72 129,8<br />
50<br />
m<br />
(500 MHz,<br />
MeOD, ppm)<br />
32]<br />
(300 MHz,<br />
D 2O, ppm)<br />
2 138,81 137,1 6,80 (t, 1H) 6,70 (m, 1H)<br />
3 72,74 75,1 4,37 (m, 1H) 4,30 (m, 1H)<br />
4 68,40 66,5 3,68 (dd, 1H) 3,67 (dd, 1H)<br />
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