Recently I am researching about METAL CHARGE-TRANSFER; VISIBLE-LIGHT; PHOTOREDOX CATALYSIS; DEHYDROGENATIVE LACTONIZATION; EFFECTIVE ALKYLATION; GAMMA-LACTONES; PYRIDINE RING; COMPLEXES; FUNCTIONALIZATION; CYCLIZATION, Saw an article supported by the JSPS KAKENHIMinistry of Education, Culture, Sports, Science and Technology, Japan (MEXT)Japan Society for the Promotion of ScienceGrants-in-Aid for Scientific Research (KAKENHI) [JP19H04578, JP18H04267, JP15H05808]. Published in AMER CHEMICAL SOC in WASHINGTON ,Authors: Shirase, S; Tamaki, S; Shinohara, K; Hirosawa, K; Tsurugi, H; Satoh, T; Mashima, K. The CAS is 2005-10-9. Through research, I have a further understanding and discovery of 6H-Benzo[c]chromen-6-one. Name: 6H-Benzo[c]chromen-6-one
We found that in situ generated cerium(IV) carboxylate generated by mixing the precursor Ce((OBu)-Bu-t)(4) with the corresponding carboxylic acids served as efficient photocatalysts for the direct formation of carboxyl radicals from carboxylic acids under blue light-emitting diodes (blue LEDs) irradiation and air, resulting in catalytic decarboxylative oxygenation of aliphatic carboxylic acids to give C-O bond-forming products such as aldehydes and ketones. Control experiments revealed that hexanuclear Ce(IV) carboxylate clusters initially formed in the reaction mixture and the ligand-to-metal charge transfer nature of the Ce(IV) carboxylate clusters was responsible for the high catalytic performance to transform the carboxylate ligands to the carboxyl radical. In addition, the Ce(IV) carboxylate cluster catalyzed direct lactonization of 2-isopropylbenzoic acid to produce the corresponding peroxy lactone and gamma-lactone via intramolecular 1,5-hydrogen atom transfer (1,5-HAT).
Name: 6H-Benzo[c]chromen-6-one. About 6H-Benzo[c]chromen-6-one, If you have any questions, you can contact Shirase, S; Tamaki, S; Shinohara, K; Hirosawa, K; Tsurugi, H; Satoh, T; Mashima, K or concate me.
Reference:
Article; Zhang, Jian; Shi, Dongdong; Zhang, Haifeng; Xu, Zheng; Bao, Hanyang; Jin, Hongwei; Liu, Yunkui; Tetrahedron; vol. 73; 2; (2017); p. 154 – 163;,
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics