33863-82-0Relevant articles and documents
Acid-catalyzed ortho-alkylation of anilines with styrenes: An improved route to chiral anilines with bulky substituents
Cherian, Anna E.,Domski, Gregory J.,Rose, Jeffrey M.,Lobkovsky, Emil B.,Coates, Geoffrey W.
, p. 5135 - 5137 (2005)
(Chemical Equation Presented) Reaction of para-substituted anilines with styrene derivatives at elevated temperatures, when catalyzed by CF 3SO3H, results in highly chemoselective ortho-alkylation of the aniline. When R = H, dialkylation can be achieved by varying the ratio of styrene to aniline. Several different substituted anilines and styrenes were examined, and good yields (42-87%) were obtained, except in the case where electron-withdrawing substituents are present on the styrene.
Palladium supported on magnesium hydroxyl fluoride: An effective acid catalyst for the hydrogenation of imines and N-heterocycles
Agbossou-Niedercorn, Francine,Corre, Yann,Dongare, Mohan K.,Kemnitz, Erhard,Kokane, Reshma,Michon, Christophe,Umbarkar, Shubhangi B.
supporting information, p. 19572 - 19583 (2021/11/04)
Palladium catalysts supported on acidic fluorinated magnesium hydroxide Pd/MgF2-x(OH)x were prepared through precipitation or impregnation methods. Applications to the hydrogenation of various aldimines and ketimines resulted in good catalytic activities at mild temperatures using one atmosphere of hydrogen. Quinolines, pyridines and other N-heterocycles were successfully hydrogenated at higher temperature and hydrogen pressure using low palladium loadings and without the use of any acid additive. Such reactivity trend confirmed the positive effect of the Br?nsted and Lewis acid sites from the fluorinated magnesium hydroxide support resulting in the effective pre-activation of N-heterocycle substrates and therefore in the good catalytic activity of the palladium nanoparticles during the hydrogenations. As demonstrated in the hydrogenation of imines, the catalyst was recycled up to 10 times without either loss of activity or palladium leaching. This journal is
Iodine-mediated 1,2-aryl migration of primary benzhydryl amines
Chang, Junbiao,Du, Yangxu,Hao, Wei,Hou, Jiao,Lu, Qing,Yu, Wenquan
supporting information, p. 16223 - 16226 (2021/09/22)
An iodine-mediated 1,2-aryl migration reaction of primary benzhydryl amines under transition metal-free conditions has been achieved. The crude imines generated by this rearrangement reaction can be directly transformed into various aromatic secondary ami