US PATENT SUBCLASS 548 / 347.1
.~.~.~.~ One double bond between ring members of the diazole ring (i.e., imidazoline)

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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}
347.1.~.~.~.~ One double bond between ring members of the diazole ring (i.e., imidazoline) {4}
348.1  DF  .~.~.~.~.~> Nitrogen attached indirectly to the diazole ring by acyclic nonionic bonding {1}
350.1  DF  .~.~.~.~.~> Chalcogen attached indirectly to the diazole ring by acyclic nonionic bonding (e.g., hydroxyalkyl glyoxalidine, etc.) {3}
354.1  DF  .~.~.~.~.~> Benzene ring bonded directly to the diazole ring
355.1  DF  .~.~.~.~.~> Benzene ring and the diazole ring are bonded to the same acyclic carbon atom or carbon chain

DEFINITION

Classification: 548/347.1

(under subclass 300.1) Compounds wherein the 1,3-diazole contains one double bond between its ring members.

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

(2) Note. The 1,3-diazoles provided for in this subclass are generally referred to as 2- imidazolines, 4,5-dihydroimidazoles, or dihydroglyoxalines.