2.2 Mechanism of the reactions0MeOLOMeOMeOMebaseROOMeROHR+?eHHhemiacetalOMeOMebaseRR0OMeOHHHOMe11
R H O MeO base R H O OMe H OMe R H OH OMe + OMe hemiacetal R H O OMe R H R O + OMe H O OMe H OMe base 11% 2.2#Mechanism#of#the#reac>ons#
OHMeOMeH+BOH + H+RFOHOHRHHHHOMeMe、+HH+OMeLH++H+OHROHRHHMeOH12
R H O H+ R H OH HOMe R H OH R H OH O Me H R H OH OMe + H+ R H OH OMe H+ H+ R H OH O Me H R H O + H MeOH R H O + H+ 12%
β-D-glucoseequilibrateda-D-glucoseH20H20solutionC6H1206C6H1206[α]-+52.70m.p.150om.p.146o[α]=+1go[α]=+112036%+64%βH30t5 CH3-1pentamethyl glucosetetramethyl glucoseD-glucoseAgOHC11H2206C10H2006C6H1206not oxidized byoxidized byoxidized byTollen'sreag.Tollen's reagentTollen'sreagent13
13%