US PATENT SUBCLASS 558 / 355
.~.~ Isomerization processes (e.g., double bond shift, cis-trans isomerism, 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}
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}
355.~.~ Isomerization processes (e.g., double bond shift, cis-trans isomerism, etc.) {1}
356  DF  .~.~.~> Isomerization of reactants containing plural cyano groups

DEFINITION

Classification: 558/355

Processes under subclass wherein there occurs transformation or rearrangement of the elements of a starting compound without the addition or removal of any elements.

(1) Note. Examples of processes provided for herein are: (1) the catalytic isomerization of 2-methyl-3- butenenitrile to 3-pentenenitrile, (2) isomerizing 3-pentenenitrile to 4- pentenenitrile, and (3) isomerizing trans-2-penteneitrile to cis-2- pentenenitrile.