QUESTION 17 Select the major product of the following reaction scheme: Reaction NaBHA Dilute HCI EtOH,...

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Answer 1

Answer #1

Option V. E is correct

Structure E is the major product

mechanism :- NaBH4 is a reducing agent so it's hydride will attack at the carbonyl carbon on lactone ,.now due to resonance the negative charge on oxygen delocalize so opening of ring occurs so since now the negative charge on oxygen so acidification by HCl hence product E obtained.

Dilute Ha Na BH4, EtOH, 25°C Ho I 2S c Mechanism :- H-BH in Lace Ho

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Answer 2

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