SDS of cas: 32305-98-9. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (((4R,5R)-2,2-Dimethyl-1,3-dioxolane-4,5-diyl)bis(methylene))bis(diphenylphosphine), is researched, Molecular C31H32O2P2, CAS is 32305-98-9, about Palladium-catalyzed asymmetric formal [3+2] cycloaddition of α-N-heterocyclic acrylates with vinyl epoxides for construction of isonucleoside analogs. Author is Huang, Ke-Xin; Xie, Ming-Sheng; Wang, Dong-Chao; Sang, Ji-Wei; Qu, Gui-Rong; Guo, Hai-Ming.
A highly efficient Pd-catalyzed asym. formal [3+2] cycloaddition using α-N-heterocyclic acrylates to react with vinyl epoxides has been achieved for the first time to access chiral functionalized THF skeletons (34 examples, up to 93% yield, >20 : 1 dr and 99% ee). Meanwhile, using a palladium/(S,S)-tBu-FOXAP catalyst or a palladium/(R)-Segphos catalyst, purine or pyrimidine isonucleoside analogs are constructed in high yields and stereoselectivity, resp. The com. availability of the catalysts, broad substrate scope and easy transformation of the products make this methodol. an attractive method in asym. synthesis.
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