Shi, Wei-Min; Li, Xiao-Hua; Liang, Cui; Mo, Dong-Liang published an article in 2017, the title of the article was Base-Free Selective O-Arylation and Sequential [3,3]-Rearrangement of Amidoximes with Diaryliodonium Salts: Synthesis of 2-Substituted Benzoxazoles.COA of Formula: C13H8BrNO And the article contains the following content:
A variety of functionalized 2-substituted benzoxazoles, e.g. I, can be prepared in good yields from amidoximes and diaryliodonium salts by selective O-arylation and sequential [3,3]-rearrangement under metal-free conditions. O-arylation of amidoximes was promoted by 3 Å mol. sieves in the absence of a base and a sequential TFA-mediated [3,3]-rearrangement was used to synthesize 2-substituted benzoxazoles. Both of the O-aryl products and rearrangement products were compatible with a broad range of sensitive functional groups such as ester, aldehyde, nitro, vinyl, amine, and amide groups in addition to halides. A bidentate N-ligand with double benzoxazoles was prepared at gram-scale in two steps. The experimental process involved the reaction of 7-Bromo-2-phenylbenzo[d]oxazole(cas: 1268137-13-8).COA of Formula: C13H8BrNO
The Article related to arylation rearrangement amidoxime diaryliodonium salt, benzoxazole preparation, Heterocyclic Compounds (More Than One Hetero Atom): Oxazoles, Isoxazoles and other aspects.COA of Formula: C13H8BrNO
Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem