Translating the Enantioselective Michael Reaction to a Continuous Flow Paradigm with an Immobilized, Fluorinated Organocatalyst
作者:Irina Sagamanova、Carles Rodríguez-Escrich、István Gábor Molnár、Sonia Sayalero、Ryan Gilmour、Miquel A. Pericàs
DOI:10.1021/acscatal.5b01746
日期:2015.11.6
enantioselective, continuous flow processes allowing either the multigram synthesis of a single Michael adduct over a 13 h period or the sequential generation of a library of enantiopure Michael adducts from different combinations of substrates (13 examples, 16 runs, 18.5 h total operation). A customized in-line aqueous workup, followed by liquid–liquid separation in flow, allows for product isolation
制备了一种新型的聚合物负载的氟化有机催化剂,并以醛的对映选择性迈克尔加成到硝基烯烃中为基准。该系统已被证明是高效的,并且在多种基材上均显示出出色的选择性(er和dr)。详细的失活研究提供了宝贵的见识,因此可以大大延长这种固定化氨基催化剂的寿命。这些数据促进了对映选择性,连续流动过程的实施,允许在13小时内完成单个迈克尔加合物的多克合成,或从不同底物组合顺序生成对映纯迈克尔加合物的文库(13个实例,16次分析,总运行18.5小时)。定制的在线水溶液处理,