Question
Download Solution PDFThe major product formed in the following reaction is
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
The mechanism of the reaction follows Norrish Type-I and Type-II reaction.
Norrish Type-I reaction involves photochemical cleavage of \(\alpha,\beta\)-unsaturated ketone/aldehyde group where as Norrish Type-II proceeds via photochemical abstraction of \(\gamma\)-hydrogen.
Example:
Norrish Type-I:
Norrish Type-II
Explanation:
In this reaction photolysis of C-O bond occurs followed by removal of \(\gamma\)-hydrogen and then cyclisation.
Conclusion:
Therefore the correct option is option (4).
Last updated on Jun 5, 2025
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