Answer to Question #196253 in Organic Chemistry for Lorena Siviero

Question

I need the schemes and names of the following reactions:

• Alpha-D-galactopyranose with methanol (in the presence of HCl gas)
• Beta-D-ribofuranose with ethylamine
• Oxidation of D-mannose by: a) Cu(OH)2; b) bromine water; c) diluted nitric acid

Answer 1

D-Glucose reacts with anhydrous methyl alcohol in the presence of dry HCl gas to form both α-methyl D-glucopyranoside and β-methyl D-glucopyranoside.