The base-catalyzed skeletal rearrangement of a thianaphthofluorene derivative was written by Cherry, W. H.;Davies, William;Ennis, B. C.;Porter, Quentin Noel. And the article was included in Australian Journal of Chemistry in 1967.Synthetic Route of C8H4Br2S This article mentions the following:
The Diels-Alder adduct of 3-vinylbenzo[b]thiophene and 1,4-naphthoquinone has been shown to undergo a novel base-catalyzed rearrangement, in which its partly hydrogenated 12-thianaphtho[2,3-a]fluorene structure is replaced by a 5-thianaphtho[2,3-b]fluorene (I) structure. 20 references. In the experiment, the researchers used many compounds, for example, 2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7Synthetic Route of C8H4Br2S).
2,3-Dibromobenzo[b]thiophene (cas: 6287-82-7) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. It has been used as a raw material for the synthesis of biologically active structures and is found in pharmaceuticals such as leukotriene synthesis inhibitors and antifungals, as well as in many natural products.Synthetic Route of C8H4Br2S
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem