The Question of Orientation in the Introduction of the Triphenylmethyl Radical into Solvent Substrates of Toluene, Chlorobenzene and Methyl Benzoate. The Tritylation of Aromatic Rings Containing Deactivating Groups
With the aid of an azo directing group, Pd-catalyzed ortho-sp(2) C-H bond activation/functionalization of azoarenes with aryl acyl peroxides has been explored. This transformation provides easy access to regioselectively introducing acyloxyl and aryl groups into azoarenes by simply changing the reaction temperature and solvent.
C5-benzoxylation with benzoylperoxide produced a variety of potentially bioactive 8-arylcarboxamido-5-benzoyloxy quinoline derivatives. The efficiency of the reaction reflects from the wide substrate scope with electronic differentiation on carboxamide and acyl peroxide in addition to tolerance of halo substitutions on either of the aryls. The reaction is additive, silver free and proceeds without
The oxygenation of 8-aminoquinoline amides by benzoyl peroxide at the C5 position in water is developed in the absence of a transition metal catalyst, affording the desired products in moderate to good yields of up to 88%. Mechanism studies reveal that the reaction would involve a radical process.
Oxygenative cleavage of an inert CAr–NH2 bond with concomitant 1,2 amine migration in 8-aminoquinolinederivatives is reported in water at room temperature. The reaction is highly atom- and step-economical as both C- and N-containing fragments of the C–N bond cleavage are incorporated into the target molecule and is effected without the need for N-oxide. The reaction is scalable to gram level, and
据报道,在室温下,水中8-氨基喹啉衍生物中惰性C Ar -NH 2键的氧裂解伴随着1,2胺的迁移。该反应在原子和步骤上都是高度经济的,因为C–N键断裂的含C和N片段都掺入了目标分子中,并且不需要N氧化物即可进行。该反应可扩展至克级,并且该产物可用作偶联反应,催化中的配体和生物活性化合物的亲电子伴侣。
Aromatic triphenylmethylation reaction between benzoyl peroxides and triphenymethyl in aromatic solvents
derivatives by the reaction between benzoyl peroxides and triphenylmethyl in aromatic solvents has been studied. Triphenylmethylation of a solvent molecule is a reaction between benzoyloxy sigma complex and triphenylmethyl. This mechanism has been evidenced by the analysis of isomer ratios of o-, m-, and p-methoxytetraphenylmethanes. These isomer ratios were controlled by the ratios of isomeric benzoyloxy-anisole