81452-46-2

Basic information

• Product Name: 6-benzoyl-7-hydroxy-5-phenylbenzothiophene

Upstream product

• 21985-04-6 3-phenyl-1-(2-thienyl)-2-propyn-1-one 
• 861528-91-8 nitrobenzaldehyde 
• 99708-82-4 methyl 3-(p-toluenesulfenylmethyl)thiophene-2-carboxylate 
• 81458-99-3 methyl 3-(p-toluenesulfinylmethyl)thiophene-2-carboxylate 
• 614-47-1 1,3-diphenyl-propen-3-one 

Relevant articles and documents

Stitching Ynones with Nitromethanes: Domino Synthesis of Functionally Enriched Benzofurans and Benzothiophenes

A convenient one-pot benzannulation of regioisomeric 2- or 3-substituted furan and thiophene ynones with a range of nitromethanes has been discovered to directly access densely and diversely functionalized benzofurans and benzothiophenes. In this protocol, the nitro group in nitromethanes functions as recursive carbanion activator to setup tandem Michael addition-6π-electrocyclization, and its eventual sacrificial elimination facilitates aromatization and overall benzannulation. This benzannulation was also explored with furan/thiophene based o-halo ynones wherein a Michael addition-SNAr process operates and nitromethanes leave their imprint to deliver nitro substituted benzo-furans and -thiophenes.

SYNTHESIS OF QUINOLINE AND BENZOTHIOPHENE DERIVATIVES BY RING ANNELATION OF PYRIDINES AND THIOPHENES

Selected ortho-disubstituted pyridines and thiophenes react with Michael acceptors to give functionalized quinolines or benzothiophenes, respectively.