Electron withdrawing substituents at carbonyl carbon increase its
reactivity towards nucleophilic addition reactions.
Electron withdrawing substituents at carbonyl carbon increases its reactivity towards nucleophilic addition
______ ______ _____ ________ ___ ___ _____ ________ __________ _________.
______ ___ _______ _________ _____ ___.
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How free radicals are generated using redox reaction? Give at least two examples.
What are the major advantages of such reactions?
Taking suitable examples explain 1,3-dipolar cyclo-addition reactions.
Arrange the following in the increasing order of electrophilic substitution. Justify your answer.
Write the mechanism of Paterno-Buechi reaction.
Explain the following:
i) E2 elimination does not give rearranged product.
ii) E1 elimination does not involve isotope effect;
iii) Hofmann elimination gives less substituted alkene
iv) An anti elimination is faster than syn-elimination.
v) The elimination of HCl from chlorofumaric acid is 50 times faster than
chloromalic acid.
In Wittig reaction, the methyl, primary and secondary alkyl halide can be used to
prepare Wittig reagent (ylide) but not tertiary alkyl halide.
How are following compounds prepared using ethereal solution of diazomethane?
Write the mechanism of the reactions.
i) CH3CH2COOCH3
ii) CH3CH2OCH3