US PATENT SUBCLASS 558 / 363
.~.~.~.~.~ Organic phosphorus compound utilized

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}
303  DF  .~ Nitriles (i.e., compounds having cyano bonded directly to carbon, which carbon may be single bonded to any atom but may be multiple bonded only to carbon) {21}
357  DF  .~.~ Processes of forming carbon to carbon bond between carbons of two organic reactants {12}
360  DF  .~.~.~ The carbon to carbon bond forms between plural molecules of identical nitrile reactants (e.g., dimerization, etc.) {1}
361  DF  .~.~.~.~ The reactant is an acyclic nitrile containing carbon to carbon unsaturation (e.g., dimerization or oligomerization of acrylonitrile, etc.) {3}
363.~.~.~.~.~ Organic phosphorus compound utilized

DEFINITION

Classification: 558/363

(under subclass 361) Processes wherein there is utilized an organic phosphorus compound.

(1) Note. An example of a process provided for herein is: the production of 2- methyleneglutaronitrile by the dimerization of acrylonitrile in the presence of tricyclohexylphosphine.