Process for preparing 2-vinyl oxazolines
AssigneeBayer Aktiengesellschaft
InventorDieter Arlt
Life of this patent
Estimating the term…
Abstract
2-VINYL OXAZOLINES HAVING THE FORMULA ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4, which may be the same or different, each represents hydrogen, or an optionally substituted alkyl or aryl radical, Are prepared by reacting cyclobutane-1,2-dinitrile with an aminoethanol having the formula: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined at a temperature of from 90.degree. to 180.degree. C and, in a second stage, heating the resulting 1,2-bis-oxazolin-2-yl cyclobutane having the formula: ##STR3## and/or 2-oxazolin-2-yl cyclobutane nitrile having the formula: ##STR4## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are defined above, to a temperature of from 250.degree. to 600.degree. C.
Claims4
2-oxazoline-2-yl cyclobutane nitriles having the formula ##STR10## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, alkyl with up to 4 carbon atoms, hydroxy substituted alkyl with up to 4 carbon atoms, phenyl and substituted phenyl where the substituent is alkyl having 1 or 2 carbon atoms.
1,2-bis-oxazolin-2-yl cyclobutanes having the formula ##STR11## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, alkyl with up to 4 carbon atoms, hydroxy substituted alkyl with up to 4 carbon atoms, phenyl and substituted phenyl where the substituent is alkyl having 1 or 2 carbon atoms.
Dependencies are inferred from the claim text.