The carbonyl    group   is  one of  the most    common  functional  groups  in  organic chemistry   for two
reasons.    First,  the carbonyl    is  a   component   of  many    different   functional  groups. In  addition    to
aldehydes   and ketones,    the carbonyl    is  found   in  carboxylic  acids,  esters, amides, anhydrides, and
several other   compounds.  More    importantly,    the carbonyl    has the unique  ability to  behave  as  either
a   nucleophile (as in  condensation    reactions)  or  an  electrophile    (as in  nucleophilic    addition
reactions). In  this    chapter,    we  will    investigate the overall properties  of  aldehydes   and ketones,    as
well    as  their   oxidation–reduction reactions   and electrophilic   properties. In  the following   chapter,    we
will    investigate their   nucleophilic    properties  through enolate chemistry.
                    
                      singke
                      (singke)
                      
                    
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