What is the expected major products of HCl addition to the alkene below. Arrange the following carbocations in the order of increasing stability least stable to most stable.
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Which of the following carbocations is expected to be most stable.
. In option B also after resonance the carbocation formed is directly attached to the nitro so it is also unstable. Which of the following compounds is the product of the reaction shown that displays rate configuration compared to the starting material. Arrange the following carbocations in the order of increasing stability least stable to most stable.
Tertiary Carbocation is the most stable due to hyperconjugation effect followed by secondary carbocation and then primary carbocation. There is no resonance nor inductive effect in methyl carbocation and thus it is the least stable among the following. Is CH3 a stable carbocation.
Furthermore if a carbocation has resonance it will be much more stable as well. Carbonation stability increases when resonance is involved in it more resonance more the carbonation is stable and here option D clearly show resonance as double Bond and ve charge are in conjugationhence it is more stable. Also option D is in conjugation with one double bond at a time only so it is least stable.
Which of the following carbocations is expected to be most stable. The order of stability is 3circ gt 2circ gt 1. A secondary allylic carbocation will be more stable than an aliphatic secondary allylic because it has the same moral support AND resonance.
The question is which among the fallen car walk then is the most stable part. Greater the number of resonating structures greater is the stability of carbocation. But the second one will have more hyper conjugating structures as greater number of alpha hydrogens are present.
Get Answer to any question just click a photo and upload the photo and get the answer completely free UPLOAD. Polar solvents stabilize the carbocation intermediate. Which of the following carbocations is most stable Benzyl carbocation Tropylium ion Allyl carbocation Phenyl carbocation 2 See answers Advertisement Advertisement koushiki200734 koushiki200734 Answer.
Hence the most stable carbocation is triphenyl methyl carbocation. C a b. The reaction mechanism is different in polar solvents than in nonpolar solvents.
We have simples Second we have C six S five CS two plus. - R groups also stabilize a carbocation. When the carbocation is attached to three carbons it is tertiary.
Organic Chemistry - Some Basic Principles And Techniques Chemistry Practice questions MCQs Past Year Questions PYQs NCERT Questions Question Bank Class 11 and Class 12 Questions NCERT Exemplar Questions and PDF Questions with answers solutions explanations NCERT reference and. Nice to be helped this one. Nonpolar solvents stabilize the carbocation intermediate.
Primary allylic carbocations typically rank at the same stability as a secondary carbocation. This car book today is the most stable mind because this car is the signal providing intel carved wooden in the signal profiled metal car boudin number of the ordinance are very high. The stability of a carbocation depends upon several factors-.
3o carbocation ie CH33C is the most stable carbocation. We must choose between 1. As CH3 is R group since it provides electron for delocalisation it will increase the stability of carbocation at ortho and para position whereas N O2 is R group it will decrease the stability of carbocation.
Answer this doubt. You must be signed in to discuss. Is most stable because R group present at por o position increases the stability of benzyl carbocation and R group decreases stability.
Option A is the correct. The correct option is C. The electrophile formed is CCl 2 Dichlorocarbene according to the following reaction.
Option A the carbocation is at para position wrt nitro group and even after resonance the carbocation forms at ortho position only. This browser does not support the video element. Is the least stable because it is a primary carbocation with no resonance stabilization.
The reaction proceeds via the moremost stable carbocation. The second one will be more stable. In an addition reaction to an alkene the π bond plays the role of.
A fragment of cyclopropane behaves like a double bond and therefore has a dancing resonance and therefore tri cyclopropane carbocation is the most stable carbocation. Therefore tertiary is more stable than secondary and more stable than primary. As we can see in option C and D are highly unstable.
Thus the most stable carbocations is shown in option A. But here it has to be explained on basis of hyper conjugation because the resonance due to the ring is same in both. Which one of the following carbocations is most stable.
Most Stable carbocation 44. -Alkyl group stabilizes carbocation by both the I effect and the hyper-conjugative effect. We usually first check for resonance as it is more effective.
Rank the following carbocations a -c in order of increasing stability from least stable to most stable. Me Me Me Me HH A B D httpsibbcoXKED1G6 OC Question Transcribed Image Text. Hence it is much more stable than benzyl carbocation.
The most stable carbocation from the following four A - D carbocations is CH D. 2 carbocation ie CH 3 CH CH 3 is more stable carbocation than 1 carbocation because 2 carbocation has more hyper conjunction effect ie it has 6 alpha hydrogen which is more stable. Is a little more stable because it is a secondary carbocation but it has no resonance stabilization.
-NO 2 group is meta-directing group therefore Less stable due to more e- withdrawing effect of -NO 2. Hence without analyzing the other carbocations it can be said that option A is the most stable carbocation-In addition the stability of B is due to resonance only. The more substituted connected to more carbons carbocation is the more stable it is.
Correct option is D group is benzene activator it is ortho para directing so it will reduce positive charge of carbocation at these positions and stablise carbocation. With respect to the previous question which carbocation A B C D or E is most likely to. Me Me Me Me A B D httpsibbcoXKFD1G6 OC.
In tertiary carbocations three alkyl groups are present. So the correct answer is Option B. The most stable carbocation among the following is NEET-2019 Odisha 1 CH -CH - CH orga Obtain.
CH3 CH 1 -CH2 3 CH2 CH-CH2 The most stable carbocation is CH3 4 CH3. Which one of the following carbocations as drawn is the most stable.
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