Rao, Maddali L. N. published the artcileChemo-selective Synthesis of 4-Chloro-3-(arylethynyl)coumarins and their Synthetic Transformations, Recommanded Product: 4,4′-Dimethyldiphenyl, the publication is Asian Journal of Organic Chemistry (2021), 10(11), 2944-2949, database is CAplus.
A study describing the chemoselective reactivity of 4-chloro-3-(2,2-dibromovinyl)-2H-chromen-2-ones with triarylbismuth reagents in the synthesis of 4-chloro-3-(arylethynyl)coumarins under Pd-catalyzed conditions were presented. A viable Pd-catalyzed protocol for the chemoselective cross-coupling reactivity of the 3-gem-dibromide in comparison to the 4-chloro substituent in coumarin substrates was developed. The synthetic scope of 4-chloro-3-(arylethynyl)coumarins with reactive 4-chloro substituent was further demonstrated in the synthesis of 2-(arylethynyl)benzofurans, 4-(N-heteroaryl)-3-(arylethynyl)coumarins, and 4-methoxy-3-(p-tolylethynyl)coumarin under different reaction conditions.
Asian Journal of Organic Chemistry published new progress about 613-33-2. 613-33-2 belongs to catalysis-chemistry, auxiliary class Benzene, name is 4,4′-Dimethyldiphenyl, and the molecular formula is C14H14, Recommanded Product: 4,4′-Dimethyldiphenyl.
Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia