A divergent and selective synthesis of isomeric benzoxazoles from a single N-Cl imine was written by Chen, Cheng-yi;Andreani, Teresa;Li, Hongmei. And the article was included in Organic Letters in 2011.Application In Synthesis of 2,5-Dimethylbenzoxazole This article mentions the following:
A divergent and regioselective synthesis of either 3-substituted benzoisoxazoles or 2-substituted benzoxazoles from readily accessible ortho-hydroxyaryl N-H ketimines is described. The reaction proceeds in two distinct pathways through a common N-Cl imine intermediate: (a) N-O bond formation to form benzoisoxazole under anhydrous conditions and (b) NaOCl mediated Beckmann-type rearrangement to form benzoxazole, resp. The reaction path also depends on the electronic nature of the aromatic ring, with the electron-rich aromatic rings favoring the rearrangement and the electron-deficient rings favoring the N-O bond formation. A Beckmann-type rearrangement mechanism via net [1,2]-aryl migration for the formation of 2-substituted benzoxazole is proposed. In the experiment, the researchers used many compounds, for example, 2,5-Dimethylbenzoxazole (cas: 5676-58-4Application In Synthesis of 2,5-Dimethylbenzoxazole).
2,5-Dimethylbenzoxazole (cas: 5676-58-4) belongs to benzoxazole derivatives. Benzoxazole derivatives have gained a lot of importance in the past few years because of their use in intermediates for the preparation of new biological materials. In the past years, numerous benzoxazole derivatives have been synthesised and evaluated for their biological potential.Application In Synthesis of 2,5-Dimethylbenzoxazole
Referemce:
Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem