5-Bromopyrimidine → 2-Fluoro-5-(5-pyrimidinyl)-3-pyridinyl 2,3,4-tri-O-acetyl-5-thio-beta-D-xylo-pyranoside
Reaktionsgleichung
Br[C:2]1[CH:3]=[N:4][CH:5]=[N:6][CH:7]=1.[C:8]([O:11][C@@H:12]1[C@@H:26]([O:27][C:28](=[O:30])[CH3:29])[C@H:25]([O:31][C:32](=[O:34])[CH3:33])[CH2:24][S:23][C@H:13]1[O:14][C:15]1[C:16]([F:22])=[N:17][CH:18]=[C:19](Br)[CH:20]=1)(=[O:10])[CH3:9]>>[C:8]([O:11][C@@H:12]1[C@@H:26]([O:27][C:28](=[O:30])[CH3:29])[C@H:25]([O:31][C:32](=[O:34])[CH3:33])[CH2:24][S:23][C@H:13]1[O:14][C:15]1[C:16]([F:22])=[N:17][CH:18]=[C:19]([C:2]2[CH:3]=[N:4][CH:5]=[N:6][CH:7]=2)[CH:20]=1)(=[O:10])[CH3:9]Komponenten
3
Versuchsvorschrift
By carrying out the operation analogously to the first part of example 137, 5-(pinacolatoboryl)pyrimidine is prepared from 5-bromopyrimidine and is reacted immediately in the same reactor with 5-bromo-2-fluoro-3-pyridinyl 2,3,4-tri-O-acetyl-5-thio-β-D-xylopyranoside, obtained according to preparation VIII, under conditions analogous to those applied in the preparation of example 177. The expected product is thus obtained in the form of a yellow solid (yield=40%).
Aufarbeitung
- customobtained
- customthose applied in the preparation of example 177