US PATENT SUBCLASS 562 / 18
.~.~.~.~.~ Preparing from a compound having a nitrogen containing hetero ring


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



562 /   HD   ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {41}
8  DF  .~ Phosphorus acids or salts thereof (i.e., compounds having -XH, wherein X is chalcogen, attached directly to phosphorus by nonionic bonding and wherein the hydrogen may be replaced by a substituted or unsubstituted ammonium or by a group IA or IIA light metal) {7}
11  DF  .~.~ Nitrogen attached indirectly to the phosphorus by nonionic bonding {3}
16  DF  .~.~.~ The nitrogen and the phosphorus are bonded directly to the same carbon {1}
17  DF  .~.~.~.~ The nitrogen is bonded to an additional acyclic carbon or acyclic carbon chain, to which a -C(=X)X- group is bonded directly, wherein the X's are the same or diverse chalcogen {1}
18.~.~.~.~.~ Preparing from a compound having a nitrogen containing hetero ring


DEFINITION

Classification: 562/18

(under subclass 17) Processes whereby a compound which contains a nitrogen-heterocyclo is utilized in the preparation.