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Assertion (A): The following intramolecu...

Assertion (A): The following intramolecular aldol reaction occurs.

Reason (R ): The carbanion does not add to C-4 because a strained four-membered ring would result.

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Assertion (A): The following intramolecular aldol reaction occurs.

Reason (R ): `(CHO)` is a better acceptor than `(C==O)`.

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Intramolecular aldol condensation : The aldol condensation also offer a convenient way to synthesize molecules with five and six membered ring.This can be done by an intramolecular aldol condensation using a dialdehyde, a keto aldehyde or a diketone as the substrate.The major product is formed by the attack of the enolate from the ketone side of the molecule that adds to the aldehyde group.The reason the aldehyde group undergoes addition preferentially may arise from the greater reactivity of aldehyde towards nucleophilic addition.In reaction of this type five membered rings from far more readily than seven membered rings and six membered rings are more favourable than four or eight membered rings when possible. Which of the following compound on reaction with O_3//Zn, H_2O followed by aq. NaOH//Delta will form

Intramolecular aldol condensation : The aldol condensation also offer a convenient way to synthesize molecules with five and six membered ring.This can be done by an intramolecular aldol condensation using a dialdehyde, a keto aldehyde or a diketone as the substrate.The major product is formed by the attack of the enolate from the ketone side of the molecule that adds to the aldehyde group.The reason the aldehyde group undergoes addition preferentially may arise from the greater reactivity of aldehyde towards nucleophilic addition.In reaction of this type five membered rings from far more readily than seven membered rings and six membered rings are more favourable than four or eight membered rings when possible. The true statement about the major product of CH_3-oversetOoverset(||)C-CH_2-CH_2-CH_2-CH_2-oversetoverset(O)(||)C-H in reaction with aq.NaOH followed by heating is.

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In the following questions, a statement of assertion (A) is following by a statement of reason (R ) A : In Hunsidiecker reaction, alkyl chlroide is formed poor yield. R : in this reaction , carbanion is formed as an intermediate.

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Assertion (A): The following intramolecular aldol reaction occurs. Reason (R ): The carbanion does not add to C-4 because a strained four-membered ring would result.

In the following questions, a statement of assertion (A) is following by a statement of reason (R )
A : In Hunsidiecker reaction, alkyl chlroide is formed poor yield.
R : in this reaction , carbanion is formed as an intermediate.

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