A catalyst, solvent, work-up and column free synthesis of chromenopyranpyrazoles via multicomponent cascade reaction has been achieved with high stereoselectivity. This novel reaction creates two N–C, two C–C and one O–C bonds through a domino process for the construction of three new rings and three contiguous stereogenic centers.
通过多组分级联反应,实现了具有高立体选择性的苯并
吡喃并
吡唑的催化、溶剂、工作液和无柱合成。这种新颖的反应通过多米诺效应,形成了两个N-C、两个C-C和一个O-C键,构建了三个新环和三个连续的立体中心。