US PATENT SUBCLASS 558 / 96
.~.~.~.~.~.~.~ Nitrogen containing compound utilized (e.g., pyridine, carbamates, urea, etc., utilized as catalysts, proton acceptors, etc.)

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

*  DD  ORGANIC COMPOUNDS (Class 532, Subclass 1) {21}
70  DF  .~ Phosphorus esters (i.e., compounds having the phosphorus ester group, wherein trivalent or pentavalent phosphorus and carbon are bonded directly to the same divalent chalcogen, and wherein the carbon may be single bonded to any atom but may be multiple bonded only to carbon) {18}
87  DF  .~.~ Processes {19}
89  DF  .~.~.~ Forming the phosphorus ester group {7}
90  DF  .~.~.~.~ Reactant having halogen attached directly to phosphorus by nonionic bonding {3}
92  DF  .~.~.~.~.~ And reactant having alcoholic or phenolic -XH group, wherein X is chalcogen (and wherein H of -XH may be replaced by substituted or unsubstituted ammonium, or by a Group IA or IIA light metal) {7}
95  DF  .~.~.~.~.~.~ The phosphorus in the reactant is trivalent {2}
96.~.~.~.~.~.~.~ Nitrogen containing compound utilized (e.g., pyridine, carbamates, urea, etc., utilized as catalysts, proton acceptors, etc.)

DEFINITION

Classification: 558/96

(under subclass 95) Processes in which a nitrogen containing

compound is utilized.

(1) Note. The nitrogen containing compound con be present as a catalyst, a proton acceptor, etc.