US PATENT SUBCLASS 549 / 555
.~.~.~.~.~ Chalcogen and the hetero ring bonded directly to the same carbon (e.g., glycidyl ethers, etc.)

Current as of: June, 1999
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549 /   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) {2}
200  DF  .~.~ Oxygen containing hetero ring (e.g., dioxirane, etc.) {16}
512  DF  .~.~.~ The hetero ring is three-membered consisting of one oxygen and two carbons {7}
554  DF  .~.~.~.~ Chalcogen attached indirectly to the hetero ring by nonionic bonding {2}
555.~.~.~.~.~ Chalcogen and the hetero ring bonded directly to the same carbon (e.g., glycidyl ethers, etc.) {3}
556  DF  .~.~.~.~.~.~> Sulfur or -C(=X)-, wherein X is chalcogen, attached indirectly to the hetero ring by nonionic bonding {1}
558  DF  .~.~.~.~.~.~> Halogen attached indirectly to the hetero ring by nonionic bonding {1}
560  DF  .~.~.~.~.~.~> Carbocyclic ring containing

DEFINITION

Classification: 549/555

(under subclass 554) Compounds wherein chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) and the oxirane ring are both bonded directly to the same carbon.

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