[EN] TOPOISOMERASE INHIBITORS WITH ANTIBACTERIAL AND ANTCANCER ACTIVITY [FR] INHIBITEURS DE LA TOPOISOMÉRASE AYANT UNE ACTIVITÉ ANTIBACTÉRIENNE ET UNE ACTIVITÉ ANTI-CANCÉREUSE
Reactions of dichlorotriphenylphosphorane with bis(trimethylsilyl) peroxide in the presence of some organic compounds have been found to give chlorinated products. Aromatic hydrocarbons bearing electron-donating substituents give the corresponding monochloroarenes, while an enol silyl ether is converted into α-chloro ketone. The mechanism is briefly discussed.
Friedel-Crafts Reaction of 1,3,5-Trialkylbenzenes with Sulfur Monochloride and<i>N</i>-Chlorodimethylamine
作者:Masaaki Yoshifuji、Susumu Tanaka、Naoki Inamoto
DOI:10.1246/bcsj.48.2607
日期:1975.9
The reaction of sulfurmonochloride gave 2,4,6-tri-t-butylchlorobenzene (3) from 1,3,5-tri-t-butylbenzene (1), but gave the corresponding sulfide and disulfide from mesitylene (2). The reaction of N-chlorodimethylamine gave 3, 2-chloro-3,5-di-t-butyltoluene and 2,4,6-trimethylchlorobenzene from 1, 3,5-di-t-butyltoluene and 2, respectively. The reaction of N-chlorodimethylamine with benzene gave chlorobenzene
An active, general, and long-lived palladium catalyst for Suzuki-Miyaura reactions of aryl and heteroaryl chlorides deactivated by steric hindrance, electron richness, and coordinating functional groups is reported. In reactions of arylbromide bearing two o-tert-butyl substituents, C(sp(3))-H arylation of the tert-butyl group, rather than the Suzuki-Miyaura reaction, proceeded in excellent yield. The key to the success of the reactions was the development of biphenylene-substituted dicyclohexylruthenocenylphosphine (CyR-Phos) as a supporting ligand.
Maerkl,G.; Merz,A., Tetrahedron Letters, 1971, p. 1269 - 1272