The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.74808-09-6, Name is (2R,3R,4S,5R,6R)-3,4,5-Tris(benzyloxy)-6-((benzyloxy)methyl)tetrahydro-2H-pyran-2-yl 2,2,2-trichloroacetimidate, molecular formula is C36H36Cl3NO6. In a Article£¬once mentioned of 74808-09-6, 74808-09-6
Synthesis of bis(C-glycosyl)flavonoid precursors
Treatment of 3,5-dimethoxyphenol with one equivalent of O-glucosyl trichioroacetimidate I in the presence of TMSOTf as catalyst afforded, in a Fries-type reaction, C-glucosyl compound 4. Reaction of 4 with one equivalent of I or with one equivalent of O-galactosyl trichloroacetimidate 8 gave, under similar reaction conditions, bis(C-glycosyl) compounds 5 and 9, respectively. Hydrogenolytic O-debenzylation of 5 afforded 3,5-dimethoxy- 2,6-bis(beta-D-glucopyranosyl)phenol (6) in high yield. Due to hindered rotation around the C-glycosyl C-C bond, structural assignment was carried out by recording 1H NMR spectra at elevated temperatures.
Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.74808-09-6, you can also check out more blogs about74808-09-6
Reference£º
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics