SDS of cas: 62-23-7. About 4-Nitrobenzoic acid, If you have any questions, you can contact Li, L; Zhu, XQ; Zhang, YQ; Bu, HZ; Yuan, P; Chen, JY; Su, JY; Deng, XM; Ye, LW or concate me.
An article Metal-free alkene carbooxygenation following tandem intramolecular alkoxylation/Claisen rearrangement: stereocontrolled access to bridged [4.2.1] lactones WOS:000461509800030 published article about GOLD-CATALYZED SYNTHESIS; EFFICIENT SYNTHESIS; CHIRALITY TRANSFER; CYCLIZATION; YNAMIDES; CYCLOISOMERIZATION; CYCLOADDITION; CONSTRUCTION; CARBON; ACID in [Li, Long; Zhu, Xin-Qi; Zhang, Ying-Qi; Bu, Hao-Zhen; Yuan, Peng; Ye, Long-Wu] Xiamen Univ, Coll Chem & Chem Engn, Key Lab Chem Biol Fujian Prov, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China; [Chen, Jinyu; Su, Jingyi; Deng, Xianming] Xiamen Univ, Sch Life Sci, State Key Lab Cellular Stress Biol, Xiamen 361102, Fujian, Peoples R China; [Ye, Long-Wu] Chinese Acad Sci, Shanghai Inst Organ Chem, State Key Lab Organometall Chem, Shanghai 200032, Peoples R China; [Ye, Long-Wu] Nankai Univ, State Key Lab Elementoorgan Chem, Tianjin 300071, Peoples R China in 2019.0, Cited 78.0. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7. SDS of cas: 62-23-7
Alkene carbooxygenation has attracted considerable attention over the past few decades as this approach provides an efficient access to various oxygen-containing molecules, especially the valuable O-heterocycles. However, examples of catalytic alkene carbooxygenation via a direct C-O cleavage are quite scarce, and the C-O cleavage in these cases is invariably initiated by transition metal-catalyzed oxidative addition. We report here a novel Bronsted acid-catalyzed intramolecular alkoxylation-initiated tandem sequence, which represents the first metal-free intramolecular alkoxylation/Claisen rearrangement. Significantly, an unprecedented Bronsted acid-catalyzed intramolecular alkene insertion into the C-O bond via a carbocation pathway was discovered. This method allows the stereocontrolled synthesis of valuable indole-fused bridged [4.2.1] lactones, providing ready access to biologically relevant scaffolds in a single synthetic step from an acyclic precursor. Moreover, such an asymmetric cascade cyclization has also been realized by employing a traceless chiral directing group. Control experiments favor the feasibility of a carbocation pathway for the process. In addition, biological tests showed that some of these newly synthesized indole-fused lactones exhibited their bioactivity as antitumor agents against different breast cancer cells, melanoma cells, and esophageal cancer cells.
SDS of cas: 62-23-7. About 4-Nitrobenzoic acid, If you have any questions, you can contact Li, L; Zhu, XQ; Zhang, YQ; Bu, HZ; Yuan, P; Chen, JY; Su, JY; Deng, XM; Ye, LW or concate me.
Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem