US PATENT SUBCLASS 558 / 337
.~.~.~.~ The organic compound contains halogen bonded directly to carbon

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}
332  DF  .~.~ Processes of attaching cyano to carbon by reaction of an inorganic cyanide with an organic compound (e.g., using HCN, cyanogen, metal cyanide, ammonium cyanide, cyanogen chloride, etc.) {10}
335  DF  .~.~.~ The organic compound contains an acyclic or alicyclic carbon to carbon double bond {6}
337.~.~.~.~ The organic compound contains halogen bonded directly to carbon

DEFINITION

Classification: 558/337

(under subclass 335) Processes wherein the organic campound contains carbon bonded directly to halogen.

(1) Note. An example of a process provided for herein is: the production of 1,4-dicyano-2-butene by the reaction of 1,4-dihalo-2-butene with hydrogen cyanide in the presence of a catalyst.