Process for preparing 2-vinyl oxazolines

Details Process for preparing 2-vinyl oxazolines Process for preparing 2-vinyl oxazolines

Filed on

1974-05-21

Date issued

1976-06-08

Examiner

Rush, Raymond V.

Patent Class

Chemistry of carbon compounds

SubClass

Miscellaneous organic carbon compounds

SubSubClass

C-metal

Other Related Categories

2604658R, C07D26312, C07D26314

Type

Patent

Status

active

Patent number

039622703

Description

ABSTRACT:
2-VINYL OXAZOLINES HAVING THE FORMULA ##EQU1## 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: ##EQU2## 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: ##EQU3## and/or 2-oxazolin-2-yl cyclobutane nitrile having the formula: ##EQU4## 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.

REFERENCES:
patent: 3505297 (1970-04-01), Sheetz et al.
patent: 3813378 (1974-05-01), Witte et al.
Purcell--C.A. 65, 12421f (1966).

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