An article Ligand-Free Copper(I)-Catalyzed Benzylic Acyloxylation of 2-Alkylpyridines under Aerobic Conditions WOS:000461844000005 published article about C-H FUNCTIONALIZATION; GAMMA-C(SP(3))-H BONDS; C(SP(3))-H BONDS; ALLYLIC ESTERS; ACETOXYLATION; ALKANES; ACIDS; ESTERIFICATION; OXYGENATION; ACTIVATION in [Cheng, Li; Sun, Yuqian; Wang, Wenrong; Yao, Changsheng; Li, Tuan-Jie] Jiangsu Normal Univ, Jiangsu Key Lab Green Synthet Chem Funct Mat, Sch Chem & Mat Sci, Xuzhou 221116, Jiangsu, Peoples R China in 2019.0, Cited 58.0. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7. HPLC of Formula: C7H5NO4
A ligand-free copper(I)-catalyzed benzylic acyloxylation of 2-alkylpyridines with carboxylic acids was realized by using 1.0 atm of O-2 as a green oxidant. The transformation provided a facile access to a wide range of N-heterocyclic esters through C-O bond formation, with broad substrate scope and good functional group tolerance. Preliminary mechanistic investigations showed that this protocol included a radical process.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem