US PATENT SUBCLASS 568 / 716
.~.~.~.~ Phenols (H of -OH may be replaced by a Group IA or IIA light metal)


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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {4}
300  DF  .~ OXYGEN CONTAINING (E.G., PERCHLORYLBENZENE, ETC.) {11}
700  DF  .~.~ Hydroxy containing (H of -OH may be replaced by a Group IA or IIA light metal) {10}
715  DF  .~.~.~ Benzene ring containing {8}
716.~.~.~.~ Phenols (H of -OH may be replaced by a Group IA or IIA light metal) {14}
717  DF  .~.~.~.~.~> Polyphenols {4}
731  DF  .~.~.~.~.~> Additional ring containing {2}
749  DF  .~.~.~.~.~> Purification or recovery {10}
763  DF  .~.~.~.~.~> Polyhydroxy (H of -OH may be replaced by a Group IA or IIA light metal) {10}
774  DF  .~.~.~.~.~> Halogen containing {4}
780  DF  .~.~.~.~.~> Acyclic polycarbon hydrocarbyl group bonded directly to the benzene ring {4}
795  DF  .~.~.~.~.~> Preparing from aryl sulfonate
796  DF  .~.~.~.~.~> Preparing from compound which includes halogen bonded directly to a benzene ring {1}
798  DF  .~.~.~.~.~> Preparing by cleavage of hydroperoxide or other peroxide
799  DF  .~.~.~.~.~> Preparing by reduction or dehydrogenation (e.g., by hydrogenation, etc.)
800  DF  .~.~.~.~.~> Preparing by oxidation {3}
804  DF  .~.~.~.~.~> Preparing by methylation
805  DF  .~.~.~.~.~> Preparing by dealkylation
806  DF  .~.~.~.~.~> Preparing by pyrolysis (e.g., by cracking, etc.)


DEFINITION

Classification: 568/716

Phenols (H of -OH may be replaced by a group IA or IIA light metal:

(under subclass 715) Compounds wherein the -OH or -OM group is bonded directly to the benzene ring, forming a phenolic nucleus.