US PATENT SUBCLASS 564 / 133
.~.~.~ Preparing directly by amidation of -C(=O)X group, where X is O- or halogen


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564 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ AMINO NITROGEN CONTAINING (E.G., UREA, SULFONAMIDES, NITROSAMINES, OXYAMINES, ETC., AND SALTS THEREOF) {37}
123  DF  .~.~ Carboxamides (i.e., Q-CO-HNH, wherein Q is a substituent having carbon bonded directly to the carbonyl or is hydrogen and wherein any substituent replacing one or both hydrogens shown will be referred to as E) {14}
133.~.~.~ Preparing directly by amidation of -C(=O)X group, where X is O- or halogen {4}
134  DF  .~.~.~.~> Of carboxylic acid ester {1}
138  DF  .~.~.~.~> Of carboxylic acid {2}
142  DF  .~.~.~.~> Of carboxylic acid halide {1}
144  DF  .~.~.~.~> Of acyclic carboxylic acid anhydride


DEFINITION

Classification: 564/133

(under subclass 123) Processes wherein a carboxamide is formed by reaction of a carboxylic acid, salt, ester, acid halide, or anhydride with ammonia or an amino nitrogen containing compound.