Assertion: aldohexose's group | /r/MadeOf | sulfuric acid
Facets:
value: preferably
type: MANNER
Source sentences:
text: The hydrolysis reaction is conducted by combining the 5-C-hydroxymethyl-D-aldohexose-based and a strong mineral acid or strong organic acid selected from the group consisting of sulfuric, hydrochloric, nitric, perchloric, and phosphoric acids, trifluoromethanesulfonic acid, methanesulfonic acid, and mixtures thereof (preferably sulfuric acid), at a molar ratio of from about 1:1 to about 1:10 (sugar:acid).
text: The invention also includes a method for converting the 5-C-hydroxymethylated compounds formed above to their anhydro bicyclic form by (1) hydrolyzing the 5-C-hydroxymethylated product described above with from about 1 to about 10 molar equivalents of a mineral acid or strong organic acid selected from the group consisting of sulfuric acid, nitric acid, hydrochloric acid, perchloric acid, phosphoric acid, methanesulfonic acid, trifluoromethanesulfonic acid, or mixture thereof, at a temperature from about 20° C. to the boiling point; and (2) removing any residual acid from the reaction solution.