Palladium-Catalyzed Asymmetric Suzuki–Miyaura Cross Coupling with Homochiral Phosphine Ligands Having Tetrahydro-1H-imidazo[1,5-a]indole Backbone
作者:Yasuhiro Uozumi、Yutaka Matsuura、Toshimasa Suzuka、Takayasu Arakawa、Yoichi Yamada
DOI:10.1055/s-0036-1589407
日期:——
nyltetrahydro-1H-imidazo[1,5-a]indol-1-one, bearing PPh2, P(t-Bu)2, and P(c-Hex)2 groups were designed and prepared with a view toward using them in aqueous heterogeneous asymmetric Suzuki–Miyaura biaryl coupling. The asymmetric coupling of 2-substituted 1-iodonaphthalenes and 2-substituted naphthalen-1-ylboronic acid took place in water under heterogeneous conditions in the presence of 10 mol% palladium
笔者想用这篇文章来教授迪特尔·恩德斯在他70之际个生日。 抽象的 两亲性聚苯乙烯-聚乙二醇树脂负载的手性咪唑并吲哚膦(PS-PEG-L *),(3 R,9a S)-2-芳基-3-(2-二烷基膦基)苯基四氢-1 H-咪唑[1 ,5-一个]吲哚-1-酮,轴承PPH 2,P(吨-Bu)2和P(c ^ -六角)2个基团被设计,并用制备视图朝向在含水多相不对称铃木-宫浦联芳基使用它们耦合。2-取代的1-碘萘和2-取代的萘-1-基硼酸在不均匀条件下于水中在10摩尔%的PS-PEG-L * -Pd络合物钯存在下进行不对称偶联,生成多达94个(的%eeS)-2,2′-二取代的1,1′-联萘基。 两亲性聚苯乙烯-聚乙二醇树脂负载的手性咪唑并吲哚膦(PS-PEG-L *),(3 R,9a S)-2-芳基-3-(2-二烷基膦基)苯基四氢-1 H-咪唑[1 ,5-一个]吲哚-1-酮,轴承PPH 2,P(吨-Bu)2和P(c