Ivanovich, Ryan A.; Polat, Dilan E.; Beauchemin, Andre M. published an article in 2017, the title of the article was Oxygen-Substituted Isocyanates: Blocked (Masked) Isocyanates Enable Controlled Reactivity.COA of Formula: C9H11NO2 And the article contains the following content:
Oxygen-substituted isocyanates (O-isocyanates) are rare isocyanates with a reported propensity to trimerize, a side-reaction that severely limited their use in synthesis. Herein, the development of blocked (masked) O-isocyanate precursors that form this reactive intermediate in situ provide controlled reactivity, allowing the first examples of cascade reactions involving O-isocyanates. Complex hydroxylamine-derived hydantoins and dihydrouracil compounds can be rapidly assembled from α- and β-amino esters, illustrating the convenience of masked O-isocyanates as hydroxylamine derived building blocks. Evidence for the intermediacy of an O-isocyanate intermediate is provided. The experimental process involved the reaction of Methyl N-Methylanthranilate(cas: 85-91-6).COA of Formula: C9H11NO2
The Article related to hydantoin preparation, dihydrouracil preparation, amino ester isocyanate cyclization, Heterocyclic Compounds (More Than One Hetero Atom): Imidazoles and other aspects.COA of Formula: C9H11NO2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics