Question

Cyclization of gluconolactone occurs via which of the following mechanisms: a. C5-OH serving as a nucleophile for attach of C1-aldehyde b. C1-carboxylic acid serving in nucleophilic attack of C5-OH C. C5-OH serving in nucleophilic attack of C1-carboxylic acid d. C5-OH serving as a nucleophile for attach of C2-ketone e. C6-OH serving in nucleophilic attack of C1-carboxylic acid

Answer 1

GLUCONIC ACID GLUCONO LACTONE COOH 4-c-on no-c-H Ho Lou HO V 1-c-OH , n-c-on do Ou is Now we have to see the mechanism of how - glueonic acid is converted to glucono lactone:

Cook e On on no "Tom EL Hó OH On glucono lactone : The ...s or serving as nucleophile attack at e-1 - carboxylic acid Gluconolactone is an ester of glucomic acid classified as an aldonic acid that cyclises to produce c. 1 oxidised derivative of glucose .

20. ой oxidising ио OM c-1 br cyclised gluconolactone