Abstract

AbstractThe structures of the adducts of 2‐butanone oxime (1) to different diisocyanates were determined by 1H NMR spectroscopy. The reaction of diisocyanate blocking is quantitative. The different adducts of 1 to 4,4′‐methylenediphenyl isocyanate (2), 2‐methyl‐1,4‐phenylene and 2‐methyl‐1,3‐phenylene diisocyanates (8 and 10) and to the isocyanate resulting from α‐hydro‐ω‐hydroxypoly(oxytetramethylene) and an excess of 2, dissociate upon heating to reform the starting materials. The residual water in the NMR solvent reacts partially with the regenerated diisocyanates to give primary amines and then ureas.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.