IP Library › Granted Patent US 12,091,602
Granted Patent B2
US 12,091,602 · App. 17/504,307 · Granted Sep 17, 2024

Heteroaryl-thio-substituted pyrones

Inventors: Brent Shanks (Ames, IA); George A. Kraus (Ames, IA); William Bradley (Schaumburg, IL); Jiajie Huo (Boulder, CO); Kyle Podolak (Ames, IA)
Assignee: Iowa State University Research Foundation, Inc.
C09K15/30C07D213/70C07D233/84C07D235/28C07D249/12C07D277/36C07D285/125C07D405/12C07D409/12C07D417/12C09D5/086
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Quick Facts
Patent No.
US 12,091,602
App. No.
17/504,307
Granted
Sep 17, 2024
Kind
B2
Abstract

A heteroaryl-thio-substituted pyrone compound that is a heteroaryl-thio-substituted pyrone or a heteroaryl-thio-substituted coumarin. In various embodiments, the heteroaryl-thio-substituted pyrone compound or a reaction product thereof is a metal corrosion inhibitor.

Claims (10)

1. A heteroaryl-thio-substituted coumarin compound that is a heteroaryl-thio-substituted coumarin, wherein the heteroaryl-thio-substituted coumarin compound has a structure selected from the group consisting of:

2. The compound of claim 1 , wherein the heteroaryl-thio-substituted coumarin compound is at least 90 wt % pure.

3. A corrosion inhibition composition comprising the compound of claim 1 , wherein the corrosion inhibition composition inhibits corrosion of a metal.

4. The composition of claim 3 , wherein the composition is an aqueous composition comprising acid.

5. A method of forming the compound of claim 1 , the method comprising:

reacting bromine-substituted coumarin with a heteroaryl-thiol to form the heteroaryl-thio-substituted heteroaryl-thio-substituted coumarin of claim 1 .

6. The compound of claim 1 , wherein the heteroaryl-thio-substituted coumarin compound has the structure:

7. The compound of claim 1 , wherein the heteroaryl-thio-substituted coumarin compound has the structure:

8. The compound of claim 1 , wherein the heteroaryl-thio-substituted coumarin compound has the structure:

9. The compound of claim 1 , wherein the heteroaryl-thio-substituted coumarin compound has the structure:

Assignments (2)
CONFIRMATORY LICENSE Recorded Jan 12, 2022
From: IOWA STATE UNIVERSITY
To: UNITED STATES DEPARTMENT OF ENERGY
Reel/Frame 058719/0122 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 8, 2021
From: SHANKS, BRENT; KRAUS, GEORGE A; BRADLEY, WILLIAM; HUO, JIAJIE; PODOLAK, KYLE
To: IOWA STATE UNIVERSITY RESEARCH FOUNDATION, INC.
Reel/Frame 058332/0644 →
Continuity (2)
Provisional Application 63094579 · Oct 21, 2020
Related Publication 20220119709A1 · Apr 21, 2022