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US 10,731,018 B2Granted
Antioxidant polydihydropyridazine and polypyridazine foams from 1,2,4,5-tetrazine
AssigneeArizona Board of Regents on Behalf of the University of Arizona
InventorsDouglas A. Loy, Robb E. Bagge, Wenmo Sun
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Abstract
Antioxidant polymer foams and uses thereof are described herein. These foams are synthesized using a Carboni-Lindsey reaction of 1,2,4,5-tetrazine with a polymer having alkenyl functional groups. The foams feature dihydropyridazine functional groups which can be oxidized to consume surrounding reactive oxidizing chemicals and are consequently antioxidant.
Claims8
A method for producing a tetrazine compound in a one-pot synthesis,
- wherein the tetrazine compound is a 1,2,4,5-tetrazine compound according to the formula:
- wherein the method comprises:
- a. adding a formamidine compound to a reaction vessel;
- b. adding a hydrazine compound to said reaction vessel;
- c. subsequently adding a nitrite compound to said reaction vessel;
- and
- d. subsequently adding an acid to said reaction vessel;
- wherein the formamidine compound, the hydrazine compound, the nitrite compound and the acid react to form the 1,2,4,5-tetrazine compound, wherein a molar ratio of the formamidine compound:
- the hydrazine compound:
- the nitrite compound of ranges from about 0.5-1.5:
- 1-3:
- 1-3, and wherein the method is effective for producing a reaction yield of the 1,2,4,5-tetrazine compound that is at least about 50%.
9 more elements
Dependencies are inferred from the claim text.