42592-07-4

Usage

InChI:InChI=1/C15H22N2O4/c1-9(2)20-14(18)16-12-7-6-11(5)13(8-12)17-15(19)21-10(3)4/h6-10H,1-5H3,(H,16,18)(H,17,19)

Upstream product

• 95-80-7 4-methylbenzene-1,3-diamine 
• 108-23-6 isopropyl chloroformate 
• 67-63-0 isopropyl alcohol 
• 584-84-9 2,4-Toluene diisocyanate 
• 6935-99-5 2,4-bis(methoxycarbonylamino)toluene 

Downstream Products

• 584-84-9 2,4-Toluene diisocyanate 

Relevant academic research and scientific papers

Synthesis and antitussive activity of obtucarbamate A derivatives

Obtucarbamate A was purified from Disporum cantoniense with good antitussive property. In present work, a series of obtucarbamate A derivatives were designed and synthesized from obtucarbamate A by microwave method, and their antitussive activity were evaluated. The results showed that the toluene diisocyanate was obtained with a yield of 95.1percent using a simple method, 1-methyl-2-pyrrolidinone as solvent, temperature of 190 °C, microwave irradiation at 60 W power for 30 min. All compounds have good antitussive activity, and small steric hindrance unsaturated groups of ester chains and amino groups favor activity. It is the first reported of obtucarbamate A derivatives used as antitussive, and the results provide a basis for the application of obtucarbamate derivatives as new antitussive.

Fluoride-Catalyzed Deblocking: A Route to Polymeric Urethanes

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.