On May 22, 2014, Mueller, Thomas Ernst; Guertler, Christoph; Basu, Susmit; Leitner, Walter published a patent.Formula: C11H9NO3 The title of the patent was Production of low and high molecular weight oxazolidinone compounds. And the patent contained the following:
The invention relates to a method for the production of oxazolidinone compounds, comprising the step of slowly reacting an isocyanate compound with an epoxide compound in the presence of a Lewis acid catalyst. The invention further relates to an oxazolidinone compound, obtainable by a method according to the invention, with a color as determined according to ASTM D1209 – 05 (2011) of ≤200 and a molar ratio of the oxazolidinone compound to isocyanurate byproduct o/i of ≥85/15. Lastly, the invention relates to an oligomeric or polymeric oxazolidinone compound, obtainable by a method according to the invention using an isocyanate compound with two or more NCO groups per mol. and an epoxide compound with two or more epoxy groups per mol., comprising at least two units derived from the isocyanate compound and at least two units derived from the epoxide compound, with a color as determined according to ASTM D1209 – 05 (2011) of ≤200. The experimental process involved the reaction of 2-(Oxiran-2-ylmethyl)isoindoline-1,3-dione(cas: 5455-98-1).Formula: C11H9NO3
The Article related to oxazolidinone derivative manufacture epoxide isocyanate reaction lewis acid catalyst, diepoxide diisocyanate copolymer manufacture lewis acid catalyst, discoloration prevention oxazolidinone derivative manufacture lewis acid reaction catalyst and other aspects.Formula: C11H9NO3
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics