The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 17, 1984
Filed:
Sep. 07, 1982
Mark E Kaiser, Midland, MI (US);
The Dow Chemical Company, Midland, MI (US);
Abstract
2-H-2-Oxazolines are prepared by contacting in liquid phase a N-(.beta.-hydroxyalkyl)formamide with a small but catalytic amount of an inorganic zinc salt at elevated temperatures. Similarly, 2-substituted-2-oxazolines are prepared by contacting N-(2-hydroxyalkyl)carboxamides with a small but catalytic amount of an inorganic zinc salt. As an example, 2-H-2-oxazoline was prepared in approximately 72 percent yield by warming a mixture of N-(.beta.-hydroxyethyl)formamide with a catalytic amount of zinc chloride at a temperature of from 180.degree. C. to 185.degree. C./50 mm Hg for 2.2 hours. In this reaction, the desired oxazoline product was recovered as a codistillate with water during the course of the reaction.