CHEM 245 Lecture Notes - Lecture 10: Methanol, Acetic Anhydride, Anomer
8 Mar 2016
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Lab day and time: wednesday and friday 11am 2pm. Abstract-including weight (g) of product obtained, % yield and melting point of material. Overall reaction scheme showing formula weights and molecular formulae of organic substrates. Detailed reaction mechanism- it is ok to represent. Glucose as roh and use that in your mechanism rather than glucose itself (too many oh groups) Experimental procedure- it is ok to say that the experiment was carried out according to the procedure in the lab manual and list any changes to this procedure. D-glucose pentaacetate was formed through the acetylation of a-d-glucose. The percent yield was 92% with a final mass of 1. 814 grams of b-d-glucose pentaacetate from that starting mass of 0. 911g a-d-glucose. The observed melting point of b-d-glucose was 129. 5-130. 1 degrees celsius. Some examples of monosaccharides include glucose, fructose, and glyceraldehyde. In a solution, they exist in equilibrium as an open chained or cyclic hemiacetal structures.
