US PATENT SUBCLASS 548 / 567
.~.~.~.~ The nitrogen is bonded directly to -C(=X)-, wherein X is chalcogen (e.g., 2 benzamidomethyl - pyrrolidines, etc.)

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {1}
*  DD  .~ HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) {4}
400  DF  .~.~ Hetero ring is five-membered consisting of one nitrogen and four carbons (e.g., halopyrrolidines, etc.) {20}
566  DF  .~.~.~ Nitrogen attached indirectly to the five-membered hetero ring by acyclic nonionic bonding {2}
567.~.~.~.~ The nitrogen is bonded directly to -C(=X)-, wherein X is chalcogen (e.g., 2 benzamidomethyl - pyrrolidines, etc.) {1}
568  DF  .~.~.~.~.~> Hydrogen or acyclic carbon bonded directly to the -C(=X)- (e.g., 2 pyrrolidine acrylamide, etc.)

DEFINITION

Classification: 548/567

(under subclass 566) Compounds wherein a group, in which X is chalcogen (i.e. oxygen, sulfur, selenium, or tellurium), is bonded directly to the nitrogen.

(1) Note. An example of a compound provided for herein is: [figure]