On May 6, 2020, Jurrat, Mark; Pointer-Gleadhill, Benjamin J.; Ball, Liam T.; Chapman, Andy; Adriaenssens, Louis published an article.Application In Synthesis of 1,3-Diphenylurea The title of the article was Polyurethanes and Polyallophanates via Sequence-Selective Copolymerization of Epoxides and Isocyanates. And the article contained the following:
Aryl isocyanates are introduced as comonomers for ring opening copolymerization (ROCOP) with epoxides. Informed by studies of reaction kinetics, we show that divergent sequence selectivity for AB- and ABB-type copolymers can be achieved with a single dimagnesium catalyst. The resulting materials resp. constitute a new class of polyurethane (PU) and a new class of material featuring an unprecedented backbone structure, the polyallophanate (PA). The successful use of isocyanate comonomers in this way marks a new direction for the field of ROCOP, while providing distinct opportunities for expansion of PU structural diversity. Specifically, the methodol. reported herein delivers PUs featuring fully substituted (tertiary) carbamyl nitrogen atoms, a structural motif that is almost inaccessible via extant polymerization strategies. Thus, in one step from com. available comonomers, our methodol. expands the scope of ROCOP and gives access to diverse materials featuring both privileged (PU) and unexplored (PA) microstructures. The experimental process involved the reaction of 1,3-Diphenylurea(cas: 102-07-8).Application In Synthesis of 1,3-Diphenylurea
The Article related to polyurethane polyallophanate sequence copolymerization epoxide isocyanate, Chemistry of Synthetic High Polymers: Ring-Opening and Other Polymerizations and other aspects.Application In Synthesis of 1,3-Diphenylurea
Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics