US PATENT SUBCLASS 540 / 539
.~.~.~.~.~ Reactant contains a cyano group


Current as of: June, 1999
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540 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
1  DF  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS {6}
484  DF  .~.~ The hetero ring contains seven members including nitrogen and carbon {14}
485  DF  .~.~.~ Chalcogen double bonded directly to a ring carbon adjacent to the ring nitrogen (e.g., caprolactam, etc.) {15}
538  DF  .~.~.~.~ Cyclization to form the hetero ring {1}
539.~.~.~.~.~ Reactant contains a cyano group


DEFINITION

Classification: 540/539

(under subclass 538) Processes wherein a reactant contains a cyano group (i.e., -CN).