Question

Account for the following:

What happens when D – glucose is treated with the following reagents

HNO₃

Answer 1

$$\begin{array}{c}\phantom{......}\mathrm{CHO}\phantom{.............}\mathrm{COOH}\phantom{.............}\mathrm{COOH}\phantom{......}\\ \phantom{...}|\phantom{..................}|\phantom{...................}|\phantom{........}\\ \phantom{.}(\mathrm{CHOH}){\phantom{A}}_4\stackrel{\mathrm{Oxidation}}{\to }(\mathrm{CHOH}){\phantom{A}}_4\stackrel{\mathrm{Oxidation}}{\leftarrow }(\mathrm{CHOH}){\phantom{A}}_4\\ \phantom{...}|\phantom{..................}|\phantom{...................}|\phantom{........}\\ \phantom{.....}\mathrm{CH}{\phantom{A}}_2\mathrm{OH}\phantom{...........}\underset{\underset{\mathrm{acid}}{\mathrm{Saccharic}}}{\mathrm{COOH}}\phantom{.............}\underset{\underset{\mathrm{acid}}{\mathrm{Gluconic}}}{\mathrm{CH}{\phantom{A}}_2\mathrm{OH}}\phantom{....}\end{array}$$