Palladium‐Catalyzed Asymmetric Allylic Alkylations with Toluene Derivatives as Pronucleophiles
作者:Jianyou Mao、Jiadi Zhang、Hui Jiang、Ana Bellomo、Mengnan Zhang、Zidong Gao、Spencer D. Dreher、Patrick J. Walsh
DOI:10.1002/anie.201509917
日期:2016.2.12
The first two highly enantioselective palladium‐catalyzed allylic alkylations with benzylic nucleophiles, activated with Cr(CO)3, have been developed. These methods enable the enantioselective synthesis of α‐2‐propenyl benzyl motifs, which are important scaffolds in natural products and pharmaceuticals. A variety of cyclic and acyclic allylic carbonates are competent electrophilic partners furnishing
前两种高度对映选择性的钯催化烯丙基烷基化与苄基亲核试剂,并用 Cr(CO) 3活化,已经开发出来。这些方法能够对映选择性合成 α-2-丙烯基苄基基序,这是天然产物和药物中的重要支架。各种环状和无环烯丙基碳酸酯是有效的亲电伙伴,使产品具有优异的对映选择性(高达 99% ee和 92% 产率)。该方法用于制备非甾体抗炎药类似物。