In a related process according to the invention for the preparation of a substituted amide, a compound containing an aliphatic carboxylic acid group and at least one substituent selected from alcohol and {HEAD ~ thiol groups} is reacted with {TAIL ~ carbonyl diimidazole} to convert the carboxylic acid group to a group of the formula: ##STR3## and the resulting compound is reacted with a compound or polymer containing at least one primary amine group to produce the substituted amide 
In a related process according to the invention for the preparation of a substituted amide , a compound containing an aliphatic carboxylic acid group and at least one substituent selected from alcohol and { HEAD ~ thiol groups } is reacted with { TAIL ~ carbonyl diimidazole } to convert the carboxylic acid group to a group of the formula : # # STR3 # # and the resulting compound is reacted with a compound or polymer containing at least one primary amine group to produce the substituted amide
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