22985-90-6Relevant articles and documents
Effects of Lewis acids and bases on the carbotitanation of unsaturated hydrocarbons and ketones with η3-allyl(di-η5-cyclopentadienyl)titanium(III)
Eisch, John J.,Boleslawski, Marek P.
, p. C1 - C4 (1987)
The carbotitanating action of η3-allyl(di-η5-cyclopentadienyl)titanium(III) toward ethylene and other unsaturated hydrocarbons, such as trimethyl(phenylethynyl)silane, and toward ketones has been shown to be promoted by Lewis acids s
CBZ6 as a Recyclable Organic Photoreductant for Pinacol Coupling
Wang, Hua,Qu, Jian-Ping,Kang, Yan-Biao
supporting information, p. 2900 - 2903 (2021/05/05)
A recyclable organic photoreductant (1 mol % CBZ6)-catalyzed reductive (pinacol) coupling of aldehydes, ketones, and imines has been developed. Irradiated by purple light (407 nm) using triethylamine as an electron donor, a variety of 1,2-diols and 1,2-diamines could be prepared. The oxidation potential of the excited state of CBZ6 is established as -1.92 V (vs saturated calomel electrode (SCE)). The relative high reductive potential enables the reductive coupling of carbonyl compounds and their derivatives. CBZ6 can be prepared in gram scale and is acid/base- or air-stable. It could be applied in large-scale photoreductive synthesis and recovered in high yield after the reaction.
GaN nanowires as a reusable photoredox catalyst for radical coupling of carbonyl under blacklight irradiation
Botton, Gianluigi,Cen, Yunen,Cheng, Shaobo,Li, Chao-Jun,Liu, Mingxin,Mi, Zetian,Rashid, Roksana T.,Tan, Lida
, p. 7864 - 7870 (2020/08/19)
Employing photo-energy to drive the desired chemical transformation has been a long pursued subject. The development of homogeneous photoredox catalysts in radical coupling reactions has been truly phenomenal, however, with apparent disadvantages such as the difficulty in separating the catalyst and the frequent requirement of scarce noble metals. We therefore envisioned the use of a hyper-stable III-V photosensitizing semiconductor with a tunable Fermi level and energy band as a readily isolable and recyclable heterogeneous photoredox catalyst for radical coupling reactions. Using the carbonyl coupling reaction as a proof-of-concept, herein, we report a photo-pinacol coupling reaction catalyzed by GaN nanowires under ambient light at room temperature with methanol as a solvent and sacrificial reagent. By simply tuning the dopant, the GaN nanowire shows significantly enhanced electronic properties. The catalyst showed excellent stability, reusability and functional tolerance. All reactions could be accomplished with a single piece of nanowire on Si-wafer. This journal is
Efficient and Selective CO2 Reduction Integrated with Organic Synthesis by Solar Energy
Guo, Qing,Liang, Fei,Li, Xu-Bing,Gao, Yu-Ji,Huang, Mao-Yong,Wang, Yang,Xia, Shu-Guang,Gao, Xiao-Ya,Gan, Qi-Chao,Lin, Zhe-Shuai,Tung, Chen-Ho,Wu, Li-Zhu
supporting information, p. 2605 - 2616 (2019/10/09)
-
