20723-73-3Relevant academic research and scientific papers
Alkynyl-terminated zwitter-ionic compound and preparation method thereof
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Paragraph 0029-0031, (2020/07/15)
The invention relates to an alkynyl-terminated zwitter-ionic compound and a preparation method thereof. The alkynyl-terminated zwitter-ionic compound has the advantages of novel structure, high reaction activity and biodegradability, contains an active gr
Fluoride-Catalyzed Deblocking: A Route to Polymeric Urethanes
Sheri, Madhu,Choudhary, Umesh,Grandhee, Sunitha,Emrick, Todd
supporting information, p. 4599 - 4602 (2018/03/28)
We report a fluoride-catalyzed deblocking of urethanes as “blocked” isocyanates. Organic and inorganic sources of fluoride ion proved effective for deblocking urethanes and for converting polyurethanes to small molecules. Distinct from conventional deblocking chemistry involving organometallic compounds and high temperatures, the method we describe is metal-free and operates at or slightly above room temperature. The use of fluorescent blocking agents enabled visual and spectroscopic monitoring of blocking/deblocking reactions, and the selected conditions proved applicable to urethanes containing a variety of blocking groups. The method additionally enabled a one pot deblocking and polymerization with α,ω-diols. Overall, this deblocking/polymerization strategy offers a convenient and efficient solution to problems that have limited the breadth of applications of polyurethane chemistry.
Coating agent, an adhesive, and an elastomer sealant by use of copper perfluoroalkyne cricked chemistries of polyurethane nonazide-
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Paragraph 0092; 0093; 0094, (2017/02/28)
The present application is directed at the reaction product of an azide compound having two or more azide groups attached thereto and an alkyne compound having two or more alkyne groups attached thereto, wherein the azide and alkyne groups react in a 1,3-
