The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 1-(Bromomethyl)-4-ethylbenzene( cas:57825-30-6 ) is researched.SDS of cas: 57825-30-6.Zhang, Ying-Qi; Zhu, Xin-Qi; Chen, Yang-Bo; Tan, Tong-De; Yang, Ming-Yang; Ye, Long-Wu published the article 《Synthesis of Isothiochroman-3-ones via Metal-Free Oxidative Cyclization of Alkynyl Thioethers》 about this compound( cas:57825-30-6 ) in Organic Letters. Keywords: isothiochromanone preparation metal free oxidative cyclization alkynyl thioether. Let’s learn more about this compound (cas:57825-30-6).
A novel Bronsted acid-catalyzed oxidative C-H functionalization of alkynyl thioethers has been developed. This method allows the practical synthesis of valuable isothiochroman-3-ones in mostly moderate to good yields under mild reaction conditions and features a broad substrate scope and wide functional group tolerance. Moreover, this metal-free oxidation can also be used to promote formal N-H insertion involving an unexpected 1,2-sulfur migration, affording useful 1,4-benzothiazin-3-ones.
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Reference:
Quinoxaline – Wikipedia,
Quinoxaline | C8H6N2 | ChemSpider