92582-17-7Relevant academic research and scientific papers
A novel hemilabile calix[4],quinoline-based P,N-ligand: Coordination chemistry and complex characterisation
Marson, Angelica,Ernsting, Johanneke E.,Lutz, Martin,Spek, Anthony L.,Van Leeuwen, Piet W. N. M.,Kamer, Paul C. J.
, p. 621 - 633 (2009)
The synthesis of the calix[4]arene-based P,N-ligand 3 (5,11,17,23-tetra- tert-butyl-25-[(2-quinolylmethyl)oxy]-26,27,28-(μ3- phosphorustrioxy)calix[4]arene), in which the nitrogen atom-containing moiety has been introduced at the lower rim of t
Olefination via Cu-Mediated Dehydroacylation of Unstrained Ketones
Dong, Guangbin,Xu, Yan,Zhou, Xukai
supporting information, p. 20042 - 20048 (2021/12/03)
The dehydroacylation of ketones to olefins is realized under mild conditions, which exhibits a unique reaction pathway involving aromatization-driven C-C cleavage to remove the acyl moiety, followed by Cu-mediated oxidative elimination to form an alkene between the α and β carbons. The newly adopted N′-methylpicolinohydrazonamide (MPHA) reagent is key to enable efficient cleavage of ketone C-C bonds at room temperature. Diverse alkyl- and aryl-substituted olefins, dienes, and special alkenes are generated with broad functional group tolerance. Strategic applications of this method are also demonstrated.
Radical Addition Enables 1,2-Aryl Migration from a Vinyl-Substituted All-Carbon Quaternary Center
Li, Zexian,Shi, Zhuangzhi,Wang, Minyan
, p. 186 - 190 (2020/11/02)
An efficient method for photocatalytic perfluoroalkylation of vinyl-substituted all-carbon quaternary centers involving 1,2-aryl migration has been developed. The rearrangement reactions use fac-Ir(ppy)3, visible light and commercially available fluoroalkyl halides and can generate valuable multisubstituted perfluoroalkylated compounds in a single step that would be challenging to prepare by other methods. Mechanistically, the photoinduced alkyl radical addition to an alkene leads to the migration of a vicinal aryl substituent from its adjacent all-carbon quaternary center with the concomitant generation of a C-radical bearing two electron-withdrawing groups that is further reduced by a hydrogen donor to complete the domino sequence.
