sulphuric acid adsorbed on silica gel is a practical and useful catalyst for acetylation of varius alcohols, phenols and amines.

Abstract The development of alternative benign reaction conditions to perform multicomponent reactions is an interesting and desirable strategy increase the sustainability organic synthesis. In this paper, we report a new version A 3 ‐coupling MCR for preparation differently substituted propargylamines starting from aldehydes, alkynes amines in acidic DES as media, under dielectric heating, pre...

An efficient synthesis of 3-substituted or 2,3-disubstituted 4(3H)-quinazolinones from benzoxazin-4-ones and primary amines under microwave irradiation in unsealed vessels is described.

objective: in order to investigate effects of different concentrations of poly amines sprimidin and putrescine on germination of arg cultivar under salinity stress. methods: this experiment was conducted as factorial based on completely randomized design with four replicates in agronomy and plant breeding laboratory, agricultural department, islamic azad university, varamin-pishva branch in spr...

The formation of C N bonds is one of the most important transformations in chemistry because nitrogen-containing compounds, particularly amines and their derivatives, are versatile building blocks for various organic molecules and essential precursors to a variety of biologically active compounds. Although several methods are known for the synthesis of C N bonds, preparation under mild and wast...

The one-pot synthesis of symmetrical triaryl amines using aryl halides and 5-Methyl-1,3,4-Thiadiazole-2-Amine as a nitrogen-transfer reagent is reported. Copper oxide nanoparticles that does not require the presence of any additional ligand, improved rate and facility of the synthesis of triaryl amines. The introduction of a new N-source, using green solvents PEG/H2O, normal atmospheric conditi...