What are the limitations of Friedel-Crafts alkylation?
Limitations of Friedel-Crafts alkylations:
- The halide must be either an alkyl halide. Vinyl or aryl halides do not react (their intermediate carbocations are too unstable).
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Match the following ions with their correct pKa values and give reasons for your answer:
Column I, Ion Column II, pKa
What are the limitations of Friedel-Crafts alkylation?
Draw cis and trans- isomers of 1,3-cyclobutanedicarboxylic acid. Comment on the dipole moment of these isomers.
Write the mechanism for the Haloform reaction.
Give the IUPAC names of the following compounds:
(i) 
(ii) 
(iii) BCH 2CH2CH2OH
Why do nitro compounds dissolve in sodium hydroxide?
Explain the following:
(i) Alkanes with odd number of carbon atoms have low melting point than those with an even number.
(ii) Wurtz reaction is not very useful when two different alkyl halides are used.