An article Copper nitrate-mediated synthesis of 3-aryl isoxazolines and isoxazoles from olefinic azlactones WOS:000482917600008 published article about AMINO-ACIDS; 1,3-DIPOLAR CYCLOADDITION; SELECTIVE INHIBITOR; DIRECT CONVERSION; NITRILE OXIDES; ALKENES; ALKYNES; POTENT; DIPOLAROPHILES; CONSTRUCTION in [Lin, Yifan; Zhang, Ke; Gao, Mingchun; Jiang, Zheyi; Liu, Jiajie; Ma, Yurui; Wang, Haoyu; Tan, Qitao; Xiao, Junjie; Xu, Bin] Shanghai Univ, Qianweichang Coll, Sch Life Sci, Innovat Drug Res Ctr,Dept Chem, Shanghai 200444, Peoples R China; [Xu, Bin] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China in 2019.0, Cited 61.0. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7. Formula: C7H5NO4
A copper nitrate-mediated [2 + 2 + 1] cycloaddition reaction was developed for the expedient synthesis of pharmacologically interesting 3-aryl substituted isoxazolines and isoxazoles through C = C bond cleavage. Copper nitrate is employed as a reaction promoter and precursor of nitrile oxides. The given approach features a new mode of cycloaddition from olefinic azlactones, copper nitrate and unsaturated compounds with wide substrate scope, good functional group tolerance and operational simplicity.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem