Class 12 Exam  >  Class 12 Questions  >  Whenreacts with KOH in presence of water (thr... Start Learning for Free
When  reacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:
  • a)
    R
  • b)
    S
  • c)
    Mixature of R and S
  • d)
    Partial S+ racemic mixture
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
Whenreacts with KOH in presence of water (through SN2 reaction mechani...
reactions involve inversion of configuration,as given compound has ‘R’ configuration, so product will be ‘S’
View all questions of this test
Explore Courses for Class 12 exam

Similar Class 12 Doubts

Read the passage given below and answer the following questions:Nucleophilic substitution reaction of haloalkane can be conducted according to both SN1 and SN2 mechanisms. However, which mechanism it is based on is related to such factors as the structure of haloalkane, and properties of leaving group, nucleophilic reagent and solvent. Influences of halogen: No matter which mechanism the nucleophilic substitution reaction is based on, the leaving group always leave the central carbon atom with electron pair. This is just the opposite of the situation that nucleophilic reagent attacks the central carbon atom with electron pair. Therefore, the weaker the alkalinity of leaving group is , the more stable the anion formed is and it will be more easier for the leaving group to leave the central carbon atom; that is to say, the reactant is more easier to be substituted. The alkalinity order of halogen ion is I− < Br− < Cl− < F− and the order of their leaving tendency should be I− > Br− > Cl− > F−. Therefore, in four halides with the same alkyl and different halogens, the order of substitution reaction rate is RI > RBr > RCl > RF. In addition, if the leaving group is very easy to leave, many carbocation intermediates are generated in the reaction and the reaction is based on SN1 mechanism. If the leaving group is not easy to leave, the reaction is based on SN2 mechanism. Influences of solvent polarity: In SN1 reaction, the polarity of the system increases from the reactant to the transition state, because polar solvent has a greater stabilizing effect on the transition state than the reactant, thereby reduce activation energy and accelerate the reaction. In SN2 reaction, the polarity of the system generally does not change from the reactant to the transition state and only charge dispersion occurs. At this time, polar solvent has a great stabilizing effect on Nu than the transition state, thereby increasing activation energy and slow down the reaction rate. For example, the decomposition rate (SN1) of tertiary chlorobutane in 25° water (dielectric constant 79) is 300000 times faster than in ethanol (dielectric constant 24). The reaction rate (SN2) of 2-bromopropane and NaOH in ethanol containing 40% water is twice slower than in absolute ethanol. In a word, the level of solvent polarity has influence on both SN1 and SN2 reactions, but with different results. Generally speaking, weak polar solvent is favorable for SN2 reaction, while strong polar solvent is favorable for SN1 reaction, because only under the action of polar solvent can halogenated hydrocarbon dissociate into carbocation and halogen ion and solvents with a strong polarity is favorable for solvation of carbocation, increasing its stability. Generally speaking, the substitution reaction of tertiary haloalkane is based on SN1 mechanism in solvents with a strong polarity (for example, ethanol containing water).Q. Polar solvents make the reaction faster as they

Read the passage given below and answer the following questions:Reductive alkylation is the term applied to the process of introducing alkyl groups into ammonia or a primary or secondary amine by means of an aldehyde or ketone in the presence of a reducing agent. The present discussion is limited to those reductive alkylations in which the reducing agent is hydrogen and a catalyst or "nascent" hydrogen, usually from a metalacid combination; most of these reductive alkylations have been carried out with hydrogen and a catalyst. The principal variation excluded is that in which the reducing agent is formic acid or one of its derivatives; this modification is known as the Leuckart reaction. The process of reductive alkylation of ammonia consists in the addition of ammonia to a carbonyl compound and reduction of the addition compound or its dehydration product. The reaction usually is carried out in ethanol solution when the reduction is to be effected catalytically:Since the primary amine is formed in the presence of the aldehyde it may react in the same way as ammonia, yielding an additional compound, a Schiff's base (RCH= NCH2R) and finally, a secondary amine. Similarly, the primary amine may react with the imine, forming an addition product which also is reduced to a secondary amine Finally, the secondary amine may react with either the aldehyde or the imine to give products which are reduced to tertiary amines.Similar reactions may occur when the carbonyl compound employed is a ketone.Q. The reaction of ammonia and its derivatives with aldehydes is called

Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer?
Question Description
Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 12. Download more important topics, notes, lectures and mock test series for Class 12 Exam by signing up for free.
Here you can find the meaning of Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice Whenreacts with KOH in presence of water (through SN2 reaction mechanism) than stereochemistry of product so formed will be:a)Rb)Sc)Mixature of R and Sd)Partial S+ racemic mixtureCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Class 12 tests.
Explore Courses for Class 12 exam
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev