Didehydroisobenzofuran: A New Reactive Intermediate for Construction of Isoacenofuran was written by Matsuoka, Suguru;Jung, Sunna;Miyakawa, Kaoru;Chuda, Yu;Sugimoto, Ryo;Hamura, Toshiyuki. And the article was included in Chemistry – A European Journal in 2018.Formula: C10H8Br2O4 This article mentions the following:
An efficient generation method of didehydroisobenzofuran, a new heteroaryne species, was developed by bromine/lithium exchange of the dibromoisobenzofuran. The reactive intermediate, thus generated, was trapped by appropriate arynophile to give the [2+2], [2+3], and [2+4] cycloadducts, resp. Moreover, the reaction could be applied to the syntheses of isoanthracenofurans (anthra[2,3-c]furans), a new class of heteroacenes, with isoelectoronic structure to the corresponding acenoheteroles (anthra[2,3-b]furans). In the experiment, the researchers used many compounds, for example, Dimethyl 4,5-dibromophthalate (cas: 859299-66-4Formula: C10H8Br2O4).
Dimethyl 4,5-dibromophthalate (cas: 859299-66-4) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. One prominent application of synthetic organobromine compounds is the use of polybrominated diphenyl ethers as fire-retardants, and in fact fire-retardant manufacture is currently the major industrial use of the element bromine.Formula: C10H8Br2O4
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary