US PATENT SUBCLASS 564 / 124
.~.~.~ Preparing directly from cyano containing compound

Current as of: June, 1999
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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}
124.~.~.~ Preparing directly from cyano containing compound {4}
125  DF  .~.~.~.~> From HCN or cyanogen
126  DF  .~.~.~.~> Catalytic hydration only of nitrile {2}
129  DF  .~.~.~.~> Acid hydrolysis only of nitrile
130  DF  .~.~.~.~> From acyclic nitrile {1}

DEFINITION

Classification: 564/124

(under subclass 123) Processes wherein a carboxamide is prepared directly from a cyano containing compound.

(1) Note. Processes which involve catalytic hydration or hydrolysis of nitriles combined with other chemical reactions, such as for example, reduction of a nitro group to an amine are placed in this subclass. Where the only reaction is catalytic hydration, see subclasses 126+; and where the only reaction is acid hydrolysis, see subclass 129, even if purification or recovery steps are included.