US PATENT SUBCLASS 546 / 243
.~.~.~.~.~ At 2-position

Current as of: June, 1999
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546 /   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) {1}
1  DF  .~.~ Hetero ring is six-membered consisting of one nitrogen and five carbons {24}
184  DF  .~.~.~ Piperidines {8}
242  DF  .~.~.~.~ Chalcogen bonded directly to ring carbon of the piperidine ring {1}
243.~.~.~.~.~ At 2-position

DEFINITION

Classification: 546/243

At 2-position:

(under subclass 242) Compounds in which the chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) is bonded to the 2-position of the piperidine ring.

(1) Note. Examples of compounds provided for herein are: [figure] [figure] [figure]

SEE OR SEARCH THIS CLASS, SUBCLASS:

290, for tautomers of chalcogen double bonded directly to piperidine (i.e., chalcogen attached directly to pyridine or partially hydrogenated pyridine), e.g., [figure]