75474-00-9Relevant articles and documents
Green and Efficient: Iron-Catalyzed Selective Oxidation of Olefins to Carbonyls with O2
Gonzalez-De-Castro, Angela,Xiao, Jianliang
supporting information, p. 8206 - 8218 (2015/07/15)
A mild and operationally simple iron-catalyzed protocol for the selective aerobic oxidation of aromatic olefins to carbonyl compounds is described. Catalyzed by a Fe(III) species bearing a pyridine bisimidazoline ligand at 1 atm of O2, α- and β-substituted styrenes were cleaved to afford benzaldehydes and aromatic ketones generally in high yields with excellent chemoselectivity and very good functional group tolerance, including those containing radical-sensitive groups. With α-halo-substituted styrenes, the oxidation took place with concomitant halide migration to afford α-halo acetophenones. Various observations have been made, pointing to a mechanism in which both molecular oxygen and the olefinic substrate coordinate to the iron center, leading to the formation of a dioxetane intermediate, which collapses to give the carbonyl product. (Chemical Equation).
A facile synthesis of acid anhydrides
Dubey,Kumar, R. Vinod
, p. 1 - 3 (2007/10/03)
A facile synthesis of symmetric and unsymmetric acid anhydrides using phase-transfer catalysis is described. By this method different types of anhydrides can be obtained in high yields under mild conditions even on microscale levels.
NOVEL TRANSFORMATION OF ARENEDIAZONIUM SALTS TO ACID ANHYDRIDES UNDER PALLADIUM CATALYSIS
Kikukawa, Kiyoshi,Kono, Kiyoshi,Nagira, Kazuhiko,Wada, Fumio,Matsuda, Tsutomu
, p. 2877 - 2878 (2007/10/02)
Palladium catalyzed reaction of arenediazonium salts, carbon monoxide and sodium carboxylates gave mixed anhydrides, wich in turn could be converted to aromatic acid anhydrides in good yields.
