Comment by Chakravarthy Kalyan on Number of sterioisomers of...
I wrote only those that are optically active and have omitted meso and duplicates in my answer. However , I am well aware of these.I corrected my mistake.
View ArticleComment by Chakravarthy Kalyan on Why does phenolphthalein form in this...
from 4 to 5 , Cl para to hydroxyl group is undergoing nucleophillic aromatic substitution. Aryl halides are known to undergo nucleophillic aromatic substitution if nitro group is at ortho or para...
View ArticleComment by Chakravarthy Kalyan on Counting number of acidic-H in a molecule
@Rahul verma if two keto groups are in two 6 membred rings seperated by a carbon bonded to these two rings , the two keto groups may not be in the same plane.
View ArticleComment by Chakravarthy Kalyan on How to compare the rate of decarboxylation?
Compound 1 undergoes decarboxylation via vinologous intermediate. The intermediate is a vinyl alcohol. Not a carbanion. The comparision is akin to bananas and apples.
View ArticleComment by Chakravarthy Kalyan on Is a Methoxy group meta directing in this...
@Waylander , understood that Methoxy group activates ring. But electrophillic attack at meta gives an intermediate that is relatively unstable. Since intermediate is unstable , can EAS occur ?
View ArticleComment by Chakravarthy Kalyan on Why are two three-membered rings preferred...
Three membred ring is formed faster due to proximity effect.
View ArticleComment by Chakravarthy Kalyan on Is azonine planar?
Please check the following link en.m.wikipedia.org/wiki/Azonine . It clearly states , this molecule is planar.
View ArticleComment by Chakravarthy Kalyan on Disubstituted cyclic alcohols - looking for...
Sad to see loong's work not acknowledged.
View ArticleComment by Chakravarthy Kalyan on Dehydration reaction of an alcohol,...
Agree with @orthocresol .Further , what is the book & author ?
View ArticleComment by Chakravarthy Kalyan on Acidification of a vicinal diol
Steo 1 should be cyclopropane ring collapse, after protonation to give alkene and ketone. Step 2: Protonation of alkene keading to stable tertiary carbocation. Step 3 : carbocation as electrophile...
View ArticleComment by Chakravarthy Kalyan on Internal Electrophilic Aromatic Reaction in...
@shukraditya bose , reaction scheme and page number with edition eoukd help in answering. And circumastance of reaction can be understood.
View ArticleComment by Chakravarthy Kalyan on Will...
I realize now that configuration at 3rd carbon will not change. While tautomerism can occur between 1st a d 2nd carbon. Good work guys, thankyou.
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Answer by Chakravarthy Kalyan for Redox reactions redefined
As per IUPAC gold book , reduction and oxidation are defined as follows$^1$$^2$. A reduced species can be formed also through the gain of electrons (either at the negative electrode in a cell or...
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Answer by Chakravarthy Kalyan for What is non-hückel double bond of Aromaticity?
In the given molecule Pyrene , the π bond shown in green is in cross conjugation (shown in green in figure 1). This bond( figure 2) is excluded from interaction with rest of conjugated system. Hence ,...
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Answer by Chakravarthy Kalyan for Number of optically active compounds among...
Ozonolysis of the given compound gives $\ce{I}$ , $\ce{II}$ , $\ce{III}$ and $\ce{IV}$.$\ce{I}$ and $\ce{II}$ are Homomers and have same configuration "S" and therefore identical (as shown in the...
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Answer by Chakravarthy Kalyan for Radical monobromination of cycloalkane
The radical monobromination of bicyclo[2.2.1] heptane could give $\ce{1}$ ,$\ce{2}$ and $\ce{3}$.However , $\ce{2}$ and $\ce{3}$ , are unstable .On observing $\ce{2}$ , planar radical at bridgehead is...
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What is the major product obtained on acidification of substituted epoxide?
The problemSource : MS Couhan (problems in organic chemistry . Chapter: Alcohols , phenols and ethers).My ThoughtsIf I proceed along $\ce{path 1}$ , $\ce1a$ is formed . It is unstable due to inductive...
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Answer by Chakravarthy Kalyan for Which of the Following is Optically Active?
I am quoting from IUPAC GOLD book$^1$ .Meso-compound : A term for the achiral member(s) of a set of diastereoisomers which also includes one or more chiral members. For example:There is a plane of...
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Answer by Chakravarthy Kalyan for Which is more basic: 1,2‐dihydropyridine or...
In compound $\ce{A}$ , lone pair on $\ce{N}$ is in conjugation with two $\ce pi$ bonds (as shown below). Therefore this lone pair is delocalized (resonance structures in the figure below) to a greater...
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