MHT CET 2024 Chemistry question

Identify the carbon atoms of glucose and of fructose forming glycosidic bond in sucrose

(A)C-1 of -glucose and C-2 of -fructoseCorrect
(B)C-1 of -glucose and C-2 of -fructose
(C)C-2 of -glucose and C-2 of -fructose
(D)C-3 of -glucose and C-1 of -fructose

Answer: (A)

Solution

Sucrose is a disaccharide made of -D-glucopyranose and -D-fructofuranose. The glycosidic (-1,-2) linkage joins C-1 of -D-glucose (its anomeric carbon, from the aldehyde group) to C-2 of -D-fructose (its anomeric carbon, from the ketone group). Because both

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Question ID VK-094859