Process for preparing 2-vinyl oxazolines

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

1975-08-26

1977-08-30

Daus, Donald G.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D26314, C07D26312

Patent

active

040454479

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.

REFERENCES:
patent: 3493635 (1970-02-01), Davi s et al.
patent: 3661922 (1972-05-01), Frump et al.

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