Acylation of aromatic compounds by acid anhydrides using Preyssler's anion [NaP5W30O110]14- and heteropolyacids as green catalysts
نویسندگان
چکیده
منابع مشابه
Reusable Silica supported Perchloric acid and potassium bisulphate as green catalysts for thiocyanation of aromatic compounds under solvent free conditions
Reusable silica supported perchloric acid and potassium bisulphate have been prepared and explored as green catalysts for thiocyanation of aromatic compounds under conventional and solvent free microwave assisted conditions. The microwave assisted protocol exhibited remarkable rate accelerations and offered selective thiocyanation of aromatic and hetero aromatic compounds in good yields. Reacti...
متن کاملfriedel–crafts acylation of aromatic compounds
an efficient method for the friedel–crafts acylation of a wide range of aromatic compounds in good to excellent yields under solvent-free conditions, using iron zirconium phosphate (zpfe) was investigated. the catalyst is easy to prepare and shows interesting catalytic properties. the catalyst was characterized by some instrumental techniques such as xrd, icp-oes, sem and tem. a wide variety of...
متن کاملHeteropolyacids as green and reusable catalysts for the synthesis of 3,1,5-benzoxadiazepines.
Synthesis of 3,1,5-benzoxadiazepines from the condensation of o-phenylenediamine (o-PDA) and acyl chlorides in the presence of a catalytic amount of various heteropolyacids (HPAs) is reported.
متن کاملGreen Synthesis of Schiff Bases by Using Natural Acid Catalysts
The utilization of green chemistry techniques are dramatically reduces chemical wastes and reaction time as recently have been proven in several organic syntheses and chemical transformations. To illustrate these advantages in the synthesis of organic heterocycles, various environmentally benign protocols that involve greener alternatives have been studied. The objective of present research wor...
متن کاملSolvent-free direct ortho C-acylation of phenolic systems by methanesulfonic acid as catalyst
The use of methanesulfonic acid as a Brønsted acid for direct ortho-acylation of phenols and naphthols proves to be a convenient, more general and direct route to various hydroxyaryl ketones. The route is regioselective, leading to ortho C-acylated products in satisfactory to high yields in most cases. The solvent free reactions described below exhibited environmentally benign in terms of faste...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: PJCT
سال: 2011
ISSN: 1899-4741,1509-8117
DOI: 10.2478/v10026-011-0017-6