29942-35-6Relevant academic research and scientific papers
A substituted tricyclohexylphosphane with “conformational lock”
Li, Tiejun,Liu, Ziyue,Tang, Wenjun,Zhao, Jianhong
, (2020/05/01)
A substituted tricyclohexylphosphane with “conformational lock”, tri(4-trans-(tert-butyl)cyclohexyl)phosphane L, has been designed and synthesized. The ligand has shown similar steric bulkiness and conformations to tricyclohexylphosphane at solid state. The comparable or slightly better performance of ligand L compared to PCy3 in Suzuki-Miyaura coupling has demonstrated the similar steric properties of two ligands in reaction and the effectiveness of the chair conformer of the cyclohexyl rings. The ineffectiveness of both L and PCy3 in palladium-catalyzed aminations has also manifested the weakness of such ligands and a sterically more bulky ligand is needed in order to develop a more efficient amination.
Photooxidation of triarylphosphines under aerobic conditions in the presence of a gold(iii) complex on cellulose extracted from Carthamus tinctorius immobilized on nanofibrous phosphosilicate
Sadeghzadeh, Seyed Mohsen,Zhiani, Rahele
, p. 1509 - 1516 (2019/01/24)
Triarylphosphines were converted to the corresponding oxides via photooxidation as a novel method. In this study, cellulose was extracted from the Carthamus tinctorius plant and then oxidized by sodium metaperiodate. A gold complex was supported on this natural cellulose. Then, a gold complex on natural cellulose supported on FPS (FPS/Au(iii)) was synthesized for the reduction of phosphine oxides to corresponding phosphines with remarkable chemoselectivity. The morphology of FPS led to higher catalytic activity. FPS/Au(iii) NPs were thoroughly characterized using TEM, FESEM, FTIR, TGA, and BET.
Visible light-induced 4-phenylthioxanthone-catalyzed aerobic oxidation of triarylphosphines
Ding, Aishun,Li, Shijie,Chen, Yang,Jin, Ruiwen,Ye, Cong,Hu, Jianhua,Guo, Hao
supporting information, p. 3880 - 3883 (2018/09/27)
We report herein a visible light-induced oxidation of triarylphosphines under aerobic condition with excellent functional group tolerance. In this transformation, the photo catalyst 4-phenylthioxanthone acted as a photosensitizer for the in situ generation of singlet oxygen. This new approach provided a cheaper and greener method for the preparation of phosphine oxide, showing great advantages in environmental protocols.
Eosin Y-catalyzed photooxidation of triarylphosphines under visible light irradiation and aerobic conditions
Zhang, Yanbin,Ye, Cong,Li, Shijie,Ding, Aishun,Gu, Guangxin,Guo, Hao
, p. 13240 - 13243 (2017/03/09)
We report herein a novel method for Eosin Y-catalyzed photooxidation of triarylphosphines under visible light irradiation and aerobic conditions. This new approach employed visible light as the energy source and air as the oxidant, showing great advantages in environmental benignness and operational easiness with a wide functional group tolerance.
