Method for producing nitriles by elimination of water from aldehyde oximes with alkylphosphonic anhydrides
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 29, 2008
Grant Date -
Feb 7, 2008
app pub date -
Jun 4, 2005
filing date -
Jun 19, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention relates to a method for producing the nitrites of formula: R.sup.1--CN by reacting aldehyde oximes (R.sup.1CN.dbd.N--OH) with cyclic alkylphosphonic anhydrides at a temperature ranging from -100 to +120.degree. C., wherein R.sup.1 represents H, a linear or branched C.sub.1-C.sub.12 alkyl group, a C.sub.3-C.sub.10 cycloalkyl, alkenyl or an aryl or heteroaryl group. The cyclic phosphonic anhydride preferably used is a 2,4,6-substituted 1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide of formula (I), wherein R' independently represents allyl, aryl or open-chain or branched C.sub.1 to C.sub.12 alkyl groups. Optionally, the reaction can be carried out in the presence of a tertiary amine base NR.sup.2.sub.3 ##STR00001##
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully