An article Copper(II)-Promoted Oxidation/[3+2]Cycloaddition/Aromatization Cascade: Efficient Synthesis of Tetrasubstituted NH -Pyrrole from Chalcones and Iminodiacetates WOS:000478839800009 published article about FACILE SYNTHESIS; CYCLOADDITION; DERIVATIVES; KETONES; LAMELLARINS; ALKALOIDS; STRATEGY; CATALYST; ACCESS in [Lin, Zhang-qi; Li, Chao-dong; Zhou, Zi-chun; Xue, Shuai; Gao, Jian-rong; Ye, Qing; Li, Yu-jin] Zhejiang Univ Technol, Coll Chem Engn, Hangzhou 310014, Zhejiang, Peoples R China in 2019.0, Cited 67.0. The Name is 1-(4-Nitrophenyl)ethanone. Through research, I have a further understanding and discovery of 100-19-6. Safety of 1-(4-Nitrophenyl)ethanone
A simple and highly efficient method for the preparation of tetrasubstituted NH-pyrrole from a wide range of chalcones and diethyl iminodiacetates via a Cu(OAc)(2)-promoted oxidation/[3+2]cycloaddition/aromatization cascade reaction has been developed. This reaction proceeds through dehydrogenations, deamination, and oxidative cyclization, affording the corresponding products in good to excellent yields. This convenient methodology for constructing tetrasubstituted NH-pyrroles has several advantages over existing methods, such as the use of easily accessible chalcones and readily available diethyl iminodiacetates, and mild reaction conditions. A wide range of substrates are tolerated.
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Reference:
Benzodioxan,
,1,4-Benzodioxane | C8H8O2 – PubChem