Class
XII Chemistry
Important
Reactions used for Organic Chemistry Conversions
In
CBSE board exam, usually word problems (conversions) covering “Properties and
reactions of functional groups” carry a weightage of 5 marks. So, it is
important that this particular type of questions is not left out while
preparing for the exam. Usually, students are confused about how to solve
questions based on organic conversions. Here, below given are the conversions
in small logical chunks which are easy to remember.
Broadly
you can classify conversions into two types – aliphatic and aromatic.
1.
Aliphatic conversions:
a.
For stepping up the series: Stepping up the series means that the product has
one carbon more than that of reactant. For such a kind of conversion, convert
the given compound to an alkyl halide and then to a cyanide and then to the
required organic compound as asked in the question. This way, the product has
one carbon more than the reactant.
b.
For stepping down of series:
Stepping
down the series means that the product has one carbon less than that of
reactant. For such a kind of conversion, convert the given compound to an amide
and then let it undergo Hoffmann bromamide degradation reaction. Then you
convert it to the required product as asked in the question.
NOTE FOR ALL
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