US PATENT SUBCLASS 558 / 87
.~.~ Processes

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.~.~ Processes {19}
88  DF  .~.~.~> Isomerization
89  DF  .~.~.~> Forming the phosphorus ester group {7}
122  DF  .~.~.~> Trivalent phosphorus converted into pentavalent phosphorus {3}
127  DF  .~.~.~> Forming a linkage wherein divalent chalcogen is bonded directly to two phosphori (e.g., forming the pyrophosphate linkage, etc.) {1}
129  DF  .~.~.~> Forming or utilizing an -O-O- or -S-S- group
130  DF  .~.~.~> Forming P-X-C(=X)- group, wherein the X's may be the same or different chalcogens and the phosphorus may be trivalent or pentavalent
131  DF  .~.~.~> Converting a phosphorus ester group to a P-XH group, wherein H of -XH may be replaced by substituted or unsubstituted ammonium or by a Group IA or IIA light metal, and wherein X is chalogen and P may be trivalent or pentavalent
132  DF  .~.~.~> Forming phosphorus to chalcogen bond
133  DF  .~.~.~> Replacing H of P-XH with substituted or unsubstituted ammonium, or with a Group IA or IIA light metal, and wherein X is chalcogen and P is trivalent or pentavalent
134  DF  .~.~.~> Substituting carbon for halogen, hydrogen, or metal bonded directly to the phosphorus {3}
138  DF  .~.~.~> Forming phosphorus to nitrogen bond
139  DF  .~.~.~> Forming a -C(=X)NHH or -N=C=O group, wherein X is chalcogen and substitution may be made for hydrogen only
140  DF  .~.~.~> Forming nonionic phosphorus to halogen bond
141  DF  .~.~.~> Halogenation of carbon
142  DF  .~.~.~> Forming carbon to carbon multiple bond
143  DF  .~.~.~> Utilizing oxirane ring containing compound
144  DF  .~.~.~> Reactant having halogen or nitrogen attached directly to phosphorus by nonionic bonding
145  DF  .~.~.~> Reactant having nitrogen attached indirectly to phosphorus by nonionic bonding
146  DF  .~.~.~> Purification or recovery {4}

DEFINITION

Classification: 558/87

(under subclass 70) Processes for the preparation of phosphorus ester compounds or for the treatment of these compounds.

SEE OR SEARCH THIS CLASS, SUBCLASS:

146, for processes of purification or recovery of phosphorus esters.