632-50-8Relevant articles and documents
The synthesis of 3,3,4,4-tetraphenyl-2-butanone from 1,1-diphenylacetone
Zieger, Herman E.,Tsang, Choi Han,Malik, Mohammed,Todaro, Louis J.
, p. 4845 - 4848 (2002)
The preparation of 3,3,4,4-tetraphenyl-2-butanone by treatment of 1,1-diphenylacetone(1,1-DPA) with potassium-t-butoxide or lithium diisopropyl amide in THF at 0°C followed by heating with a diphenylmethylhalide is described. A single crystal X-ray analys
Kinetic Properties of Caged Ambident Radicals Formed in the Thermolyses of Nitrones
Villarreal, Jose A.,Grubbs, Edward J.
, p. 260 - 265 (1981)
Thermal decompositions of N-benzhydryl-α,α-diphenylnitrone (1) and the para-tetradeuterated analogue 1-d4 in several solvents are reported.Mass spectral analyses of recovered nitrones and/or O-benzhydryl ethers were performed.These data are combined with previously reported spectroscopic rate constants for the decomposition of 1 to evaluate the true carbon-nitrogen homolysis rate constant and the relative rate constants for (a) geminate radical recombination at the iminoxy nitrogen, (b) irreversible recombination at oxygen, and (c) diffusion of the solvent-caged radicals.
Designed electron-deficient gold nanoparticles for a room-temperature Csp3-Csp3coupling reaction
Yu, Qiu-Ying,Su, Hui,Zhai, Guang-Yao,Zhang, Shi-Nan,Sun, Lu-Han,Chen, Jie-Sheng,Li, Xin-Hao
supporting information, p. 741 - 744 (2021/02/06)
Stille cross-coupling reactions catalysed by an ideal catalyst combining the high activity of homogeneous catalysts and the reusability of heterogeneous catalysts are of great interest for C-C bond formation, which is a widely used reaction in fine chemistry. Despite great effort to increase the utilization ratio of surface metal atoms, the activity of heterogeneous catalysts under mild conditions remains unsatisfactory. Herein, we design a proof-of-concept strategy to trigger the room-temperature activity of heterogeneous Au catalysts by decreasing the electron density at the interface of a rationally designed Schottky heterojunction of Au metals and boron-doped carbons. The electron-deficient Au nanoparticles formed as a result of the rectifying contact with boron-doped carbons facilitate the autocleavage of C-Br bonds for highly efficient C-C coupling reactions of alkylbromides and allylstannanes with a TOF value of 5199 h-1 at room temperature, surpassing that of the state-of-the-art homogeneous catalyst. This journal is
Photodriven Dehydrogenative Homocoupling of Benzylic C-H Bonds Forming Strained C-C Bonds
Ishida, Naoki,Son, Mingon,Kawasaki, Tairin,Ito, Misato,Murakami, Masahiro
supporting information, p. 2067 - 2070 (2021/10/14)
A photoinduced dehydrogenative homocoupling reaction of alkylarenes is reported. Gaseous hydrogen is evolved as the sole byproduct and neither oxidants nor hydrogen acceptors are required. The present reaction offers an environmentally benign and atom-economical means for forming sterically strained C-C single bonds. It also gives a remarkable example of photodriven reactions overcoming a considerable rise in energy.