US PATENT SUBCLASS 548 / 314.1
.~.~.~.~.~.~.~.~ Acyclic chalcogen bonded directly at the 2- and at the 4- or 5- positions of each of the two diazole rings (e.g., N, N' methylene bis -hydantoin, 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}
100  DF  .~.~ Hetero ring is five-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazoles, etc.) {18}
300.1  DF  .~.~.~ 1,3-diazoles (including hydrogenated) {9}
311.1  DF  .~.~.~.~ Additional hetero ring attached directly or indirectly to the diazole ring by nonionic bonding (e.g., 1,3-dioxolan-2-yl methyl-imidazole, etc.) {5}
312.4  DF  .~.~.~.~.~ The additional hetero ring is a diazole ring (including hydrogenated) {1}
312.7  DF  .~.~.~.~.~.~ Plural 1,3-diazoles {4}
313.7  DF  .~.~.~.~.~.~.~ Ring nitrogens of two diazole rings attached directly to the same atom or chain, which chain may include a ring, by nonionic bonding {1}
314.1.~.~.~.~.~.~.~.~ Acyclic chalcogen bonded directly at the 2- and at the 4- or 5- positions of each of the two diazole rings (e.g., N, N' methylene bis -hydantoin, etc.)

DEFINITION

Classification: 548/314.1

(under subclass 313.7) Compounds wherein acyclic chalcogen

(i.e., oxygen, sulfur, selenium, or tellurium) is bonded directly at the 2- and at the 4- or 5- positions of each of the two diazole rings.

(1) Note. This subclass contains, for example: [figure]