Novel BIPHEN H2 based P,S-bidentate phosphoramidite ligand in palladium-catalyzed asymmetric allylationстатья
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Дата последнего поиска статьи во внешних источниках: 15 декабря 2021 г.
Аннотация:The reaction of P,S-phosphoramidite bearing (Ra)-BIPHEN H2 core and exocyclic amino sulfide as the new ligand with [Pd(p-allyl)Cl]2 in the presence of AgBF4 yielded a cationic metallochelate [Pd(p-allyl)(L)]BF4. This new chiral inducer provided up to 90% ee in the Pd-mediated allylic substitution reaction of (E)-1,3-diphenylallyl acetate with various C- and N-nucleophiles. In the Pd-catalyzed amination of 2-diethoxyphosphoryl-1-phenylallyl acetate with aniline, ee values up to 57% were achieved.