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  4. The number of aldol reaction (s) that occurs in the given transformation is <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/c-mstbbkfvqfowzjat.jpg />

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Q. The number of aldol reaction (s) that occurs in the given transformation is
Question

NTA AbhyasNTA Abhyas 2022

Solution:

In this sequence of reaction three times aldol reaction occurs first than cross Cannizaro reaction takes place as follows
$\left(\text{CH}\right)_{\text{3}} - \text{CHO} + \text{3HCHO} \overset{\left(\text{OH}\right)^{-}}{ \rightarrow } \left(\left(\text{(CH}\right)_{\text{2}} \text{OH)}\right)_{\text{3}} - \text{C} - \text{CHO}$
$\left(\left(\text{(CH}\right)_{\text{2}} \text{OH)}\right)_{\text{3}} - \text{C} - \text{CHO} \overset{\left(\text{OH}\right)^{-}}{ \rightarrow } \text{C} - \left(\left(\text{(CH}\right)_{\text{2}} \text{OH)}\right)_{\text{4}}$