The ring closing olefine metathesis in protic solvents using a new ruthenium benzylidene complex is described.

The secondary parallel hypercalcemic effects associated with the treatment of several hyperproliferative diseases natural hormone 1α,25-dihydroxyvitamin D3 (calcitriol) and/or known active vitamin D metabolites and analogs, demand development efficient rapid methods for preparation receptor (VDR) ligands as new selective non-calcemic agonists. Here we describe an adaptable multigram-scale synth...

Protic ionic liquids (PILs) are a subgroup of ionic liquids and easily formed by proton transfer from a Brønsted acid to a Brønsted base. Two new crystalline aluminophosphates, [C5H16N2][Al(PO4)(HPO4)] (AlPO-PIL1) and [C5H16N2][Al2(OH)2 (PO4)2] (AlPO-PIL2), are successfully prepared for the first time from a protic ionic liquid, 3-dimethylaminopropylamine acetate. Their structures were determin...

The ionoSolv pretreatment is a new technique employing protic low-cost ionic liquids and has previously been applied to successfully fractionate switchgrass and the grass Miscanthus giganteus. This study investigates the effect of using the protic ionic liquid solution [N2220][HSO4]80% with two different acid/base ratios (1.02 and 0.98) at 120, 150 and 170 °C on the pretreatment outcome of the ...

We present a computational analysis of the short-range structure three protic ionic liquids based on strong organic acids: trifluoracetate, methanesulfonate, and triflate triethylammonium. Accurate ab initio computations carried out gas-phase dimers show that protonation triethylamine is spontaneous. have identified anion-cation binding motif due to presence hydrogen bond electrostatic interact...

In this paper, 2,3,3-trimethyl-3H-indolin was synthesized by phenylhydrazine and 3-methyl-2-butanone as raw materials in the acetic acid reacted with different nitrogenalkylating reagents. Semi mono-cyanine dye and semi dicyanine dye were prepared with the help of squaric acid diethyl ester. The spectral properties of the target products were checked. The results show that compared with symmetr...

A novel sulfonated diamine was synthesized from 1,4-bis(4-aminophenoxy) benzene [pBAB]. Sulfonated polyimides (SPIs) were synthesized from sulfonated pBAB, 1,4-bis(4-aminophenoxy-2-sulfonic acid) benzenesulfonic acid [pBABTS], various diamines and aromatic dianhydrides. Composite proton exchange membranes (PEMs) made of novel SPIs and a protic ionic liquid (PIL) 1-vinyl-3-H-imidazolium trifluor...

A mathematical model to explain cations’ solubility of both protic and aprotic ionic liquids in a wide range hydrochloric acid solutions has been developed. The concept this is based on an assumption the mineral extraction into organic phase, formation salt there between liquid cation chloride-anion due ions recombination partial back-extraction. proposed approach allows estimating correspondin...