Combining Ru-Catalyzed C–H Functionalization with Pd-Catalyzed Asymmetric Allylic Alkylation: Synthesis of 3-Allyl-3-aryl Oxindole Derivatives from Aryl α-Diazoamides
作者:Kosuke Yamamoto、Zafar Qureshi、Jennifer Tsoung、Guillaume Pisella、Mark Lautens
DOI:10.1021/acs.orglett.6b02423
日期:2016.10.7
Ruthenium-catalyzed C–H functionalization was successfully combined with palladium-catalyzed asymmetric allylic alkylation in one pot. The novel dual-metal-catalyzed reaction provides a variety of 3-allyl-3-aryl oxindoles from the corresponding α-diazoamides in up to 99% yield with up to 85% ee. The appropriate ligand choice is important to promote the sequential reaction, avoiding undesired metal
在一锅中,钌催化的CH官能团与钯催化的不对称烯丙基烷基化反应成功结合。新颖的双金属催化反应可从相应的α-重氮酰胺中以高达99%的收率和高达85%ee的产率提供各种3-烯丙基-3-芳基羟吲哚。适当的配体选择对于促进顺序反应,避免不希望的金属相互作用或配体交换很重要。