Part 8: MECHANISMS

Note that no other reagents are needed in order to complete any of these sequences, you should only be using what is there.



IMAGES WILL BE ADDED AS TIME ALLOWS
LAST UPDATE JAN 17th 2006


A
Acid catalysed hydrolysis of a cyclic acetal to the ketone and the corresponding 1,2-diol.  Note the base, B:, could be a water molecule, the conjugate base of the acid catalyst, a molecule of the acetal etc.  As a temporary solution, it would be very like the following....

B
Acid catalysed hydrolysis of an amide to the parent carboxylic acid and the corresponding alcohol. Here the benzene part has been abbreviated to "Ar".  Note the base, B:, could be a water molecule, the conjugate base of the acid catalyst or an ester molecule.
For an example see: /courses/351/Carey5th/Ch20/ch20-3-4-1.html

C
Preparation of an epoxide via an electrophilic addition to an alkene using a peracid.
For an example see : /courses/351/Carey5th/Ch06/ch6-9.html

D
Friedel-Crafts alkylation of an aromatic via an electrophilic aromatic substitution involving a carbocation rearrangement.
For an example see : /courses/351/Carey5th/Ch12/ch12-6.html

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