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Taking into account the stability of var...

Taking into account the stability of various cycloalkanes and carbocations, as well as the rules governing mechanisms of carbocation rearrangements, what is the most likely product of this reaction ?

A

B

C

D

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The correct Answer is:
B
Ring expansion take place.
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Carbocations are species in which central carbon carries positive charge. If the charge on the carbocations gets cocentrated or lo-calized the carbocation becomes unstable. The two factors which account for stability of carbocations are inductive effect and hyper conjugation (no bond resonance). Inductive effect is minor factor and hyper conjugation is major factor. Which is most stable carbocation

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Carbonyl compounds give different oxidation products with different reagents .Several oxidising agents can be used to oxidise carbonyy compounds .Ammonical silver nitate (tollens reagent ) oxidises aliphatic as well as aromatic aldehydes . R-CHO overset("Tollens reagents ") to R-COOh +Ag (silver mirror ) strong oxidatising agents like KMnO_4 //H^+ ,HNO_3 ,K_2 Cr_2 O_7 //H^+ oxidise Aldehydes as well as ketons . open chain ketons in oxidation give mixture of two carbonylic acids . oxidation as well as ketons of unsymmetrical ketons takes place according to popoff's rule .According to this rule alpha - carbon whose bond breaks in oxidation always belongs to the alkyl group which has more number of carbons which of the following is most reactive towards oxidation ?

Carbonyl compounds give different oxidation products with different reagents .Several oxidising agents can be used to oxidise carbonyy compounds .Ammonical silver nitate (tollens reagent ) oxidises aliphatic as well as aromatic aldehydes . R-CHO overset("Tollens reagents ") to R-COOh +Ag (silver mirror ) strong oxidatising agents like KMnO_4 //H^+ ,HNO_3 ,K_2 Cr_2 O_7 //H^+ oxidise Aldehydes as well as ketons . open chain ketons in oxidation give mixture of two carbonylic acids . oxidation as well as ketons of unsymmetrical ketons takes place according to popoff's rule .According to this rule alpha - carbon whose bond breaks in oxidation always belongs to the alkyl group which has more number of carbons the reagent which oxidise only aliphatic ketone is :

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MS CHOUHAN-HYDROCARBONS (ALKENES)-LEVEL-2
  1. Taking into account the stability of various cycloalkanes and carbocat...

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  2. In each reagent box write a letter designating the best reagent and co...

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  3. Propene (CH3 – CH = CH2) can be transformed to compounds (a to j) list...

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  4. In each reaction box write a single letter designating the best reagen...

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  5. Match the reagents a-j with products A-J. There is one best product fo...

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  6. Match the column :

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  7. Match the column I with column II and with column III (Matrix).

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  8. Match the column I and II.

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  9. Sum of molecular mass of A, B, C, D (i.e. A+B + C + D) is equal to :

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  10. underset("(all isomers) ")(C2FClBrl) underset(Ni) overset(H2)to (A)(ex...

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  11. Match the following columns

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  12. Vladimir Markovnikov rule : Alkenes undergo electrophilic addition rea...

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  13. Vladimir Markovnikov rule : Alkenes undergo electrophilic addition rea...

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  14. Vladimir Markovnikov rule : Alkenes undergo electrophilic addition rea...

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  15. Vladimir Markovnikov rule : Alkenes undergo electrophilic addition rea...

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  16. Vladimir Markovnikov rule : Alkenes undergo electrophilic addition rea...

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  17. Vladimir Markovnikov rule : Alkenes undergo electrophilic addition rea...

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  18. CH3 - CH2-CH=CH2+CH2 OH overset(H^(o+))to CH3-CH2- underset(OCH3) un...

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  19. CH3 - CH2-CH=CH2+CH2 OH overset(H^(o+))to CH3-CH2- underset(OCH3) un...

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  20. CH3 - CH2-CH=CH2+CH2 OH overset(H^(o+))to CH3-CH2- underset(OCH3) un...

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  21. CH3 - CH2-CH=CH2+CH2 OH overset(H^(o+))to CH3-CH2- underset(OCH3) un...

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