JEE · NEET Previous Year Question
In an reaction on chiral centres, there is
Topic: NEET PYQ
Answer: A. Full step-by-step solution below.
- Ainversion more than retention leading to partial racemisation
- B100% retention
- C100% inversion
- D100% racemisation.
Correct answer: A
Solution
(a) The carbocation formed in the slow step beinghybridised is planar andattack of nucleophile may take place from either side resulting in amixture of products, one having the same configuration and other having inverted configuration. The isomer corresponding to inversion is presentin slight excess because also depends upon the degree of shielding of the front side of the reacting carbon.More Haloalkanes & Haloarenes PYQs
- Which of the following statements is true in case of alkyl halides?
- The correct order of the rate of the reaction for the following reaction with respect to nucleophiles is :…
- Identify the product obtained when bromoethane is heated with excess of alcoholic ammonia under pressure.
- Which of the correct option for the following reaction?…
- Which of the following halides undergoes hydrolysis on warming with water/aqueous ?