Zhang, Su-Lei; Zhang, Wen-Wen; Li, Bi-Jie published the article 《Ir-Catalyzed Regio- and Enantioselective Hydroalkynylation of Trisubstituted Alkene to Access All-Carbon Quaternary Stereocenters》. Keywords: enamide preparation alkyne iridium catalyst regioselective enantioslective hydroalkynylation; homopropargyl amide preparation.They researched the compound: (R)-2,2′-Bis[bis(4-methoxy-3,5-dimethylphenyl)phosphino]-4,4′,6,6′-tetramethoxy)-1,1′-biphenyl( cas:1365531-93-6 ).SDS of cas: 1365531-93-6. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:1365531-93-6) here.
An unprecedented substrate-directed, iridium-catalyzed enantioselective hydroalkynylations of trisubstituted alkenes to form acyclic all-carbon quaternary stereocenter β to a nitrogen atom was reported. The hydroalkynylation of enamide occurred with unconventional selectivity, favoring the more hindered reaction site. Homopropargyl amides with β-stereocenters were prepared in high regio- and enantioselectivities. Combined exptl. and computational studies revealed the origin of the regio- and enantioselectivities.
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Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica