1. Tardigrade
  2. Question
  3. Chemistry
  4. Consider the following reactions: (i) Glucose + ROH xrightarrow textdry HCl Acetal xrightarrow[(CH3CO)2O]x eq. of acetyl derivative (ii) Glucose xrightarrowNi/H2 A xrightarrow[(CH3CO)2O]y eq. of acetyl derivative (iii) Glucose xrightarrow[(CH3CO)2O]z eq. of acetyl derivative 'x', 'y' and 'z' in these reactions are respectively.

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Q. Consider the following reactions :
(i) Glucose $+ ROH \xrightarrow{\text{dry} HCl}$ Acetal
$\xrightarrow[(CH_3CO)_2O]{x \,eq. of}$ acetyl derivative
(ii) Glucose $ \xrightarrow{Ni/H_2} A \xrightarrow[(CH_3CO)_2O]{y\, eq. of}$ acetyl derivative
(iii) Glucose $\xrightarrow[(CH_3CO)_2O]{z\, eq. of}$ acetyl derivative
'x', 'y' and 'z' in these reactions are respectively.

JEE MainJEE Main 2020Biomolecules

Solution:

(i) Glucose + dry $HCl \xrightarrow{ROH} $ Acetal $\xrightarrow[(CH_3CO)_2O]{x\, Eq}$ acetyl derivative

(ii) Glucose $\xrightarrow{Ni/H_2} A \xrightarrow[(CH_3CO)_2O]{y\, Eq}$ Acetyl derivative

(iii) Glucose $\xrightarrow[(CH_3CO)_2O]{z\,Eq}$ Acetyl derivative

due to presence of $-OH$ group in Glucose the reaction is

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so for (i)

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