RESUMO
An efficient and selective electrosynthesis of phenols and anilines from arylboronic acids in aqueous ammonia is achieved in an undivided cell. By simply changing the concentration of aqueous ammonia and the anode potential, good yields of phenols and anilines can be obtained chemoselectively with high reaction rates. We propose that anodic oxidation could have played an important role in these transformations.
Assuntos
Compostos de Anilina/síntese química , Ácidos Borônicos/química , Cobre/química , Técnicas Eletroquímicas , Fenóis/síntese química , Aminação , Compostos de Anilina/química , Hidroxilação , Estrutura Molecular , Fenóis/químicaRESUMO
In the presence of p-toluenesulfonic acid and iodine, styrene derivatives undergo head-to-tail dimerization followed by trapping with nitriles to yield the corresponding Ritter-type products.
Assuntos
Acetamidas/síntese química , Ácidos/química , Alcenos/química , Iodo/química , Compostos de Vinila/química , Acetamidas/química , Catálise , Dimerização , Modelos Moleculares , Estrutura Molecular , EstereoisomerismoRESUMO
An efficient synthesis of alkenes from epoxides in a mixture of saturated aqueous NH(4)Br and tetrahydrofuran (8:1) has been developed in an undivided cell fitted with a pair of zinc electrodes, and it is proposed that the reaction is mediated by Zn(0) with a hierarchically organized nanostructure.