An article Isocyanide-based MCRs: Diastereoselective cascade synthesis of perfluoroalkylated pyrano[3,4-c]pyrrole derivatives WOS:000640184500004 published article about EXO SELECTIVITY; ALDER; CONSTRUCTION; HETEROCYCLES; INHIBITORS in [Yang, Shanxue; Fan, Zhenhua; Han, Jing; Chen, Jie; He, Weimin; Zhang, Hui; Cao, Weiguo] Shanghai Univ, Innovat Drug Res Ctr, Dept Chem, Shanghai 200444, Peoples R China; [Yao, Lan] Shanghai Blood Ctr, Inspect Dept, Shanghai 200051, Peoples R China; [Deng, Hongmei; Shao, Min; Zhang, Hui] Shanghai Univ, Lab Microstruct, Instrumental Anal & Res Ctr, Shanghai 200444, Peoples R China; [Cao, Weiguo] Chinese Acad Sci, Shanghai Inst Organ Chem, Key Lab Organofluorine Chem, Shanghai 200032, Peoples R China in 2021.0, Cited 39.0. Formula: C8H7NO3. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6
The highly diastereoselective synthesis of perfluoroalkyl-containing pyrano[3,4-c]pyrroles has been accomplished via a cascade process involving Michael addition, Passerini-type reaction, Mumm rearrangement and an oxo-Diels-Alder reaction. This domino transformation of isocyanides, methyl perfluoroalk-2-ynoates and 3-aroyl (or heteroyl) acrylic acids proceeded smoothly at room temperature and led to the formation of the highly diastereoselective target compounds with high functional-group compatibility in good to excellent yields.
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Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem