Research speed reading in 2021. We’ll be discussing some of the latest developments in chemical about CAS: Quality Control of Methyl benzo[b]thiophene-2-carboxylate, C10H8O2S. A document type is Patent, introducing its new discovery., Quality Control of Methyl benzo[b]thiophene-2-carboxylate
The present invention provides a process for producing a 2-substituted benzo[b]thiophene, which is characterized by reacting a substituted or unsubstituted 2-halogenobenzaldehyde with sulfur and a compound represented by general formula (1) (wherein M represents an alkali metal; i represents an integer of 0 or 1; j represents an integer of 1 or more; and k represents an integer of 1-2 with a proviso that i+k=2), or with a compound of general formula (1) wherein j is 2 or more, in the presence of an aprotic polar solvent, and then reacting the reaction mixture with a compound represented by general formula (2) (wherein X represents a halogen atom; and R represents an acyl group, a substituted or unsubstituted alkoxycarbonyl group, a substituted or unsubstituted arylcarbonyl group or a cyano group) to give rise to intramolecular ring closure. The present process uses no unstable raw materials; enables production of an intended product in a simple operation at a high yield; and is very effective as a process for industrial production of 2-substituted benzo[b]thiophene.
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Reference:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem