Abstract This work presented the studies with natural zeolite—clinoptilolite as catalyst for isomerization of geraniol. During research, it turned out that studied process is much more complicated, and not only takes place in it, but also dehydration, oxidation, dimerization, cyclization fragmentation carbon chain. Geraniol an organic raw material which can be obtained by a chemical synthesis f...

As climate change progresses, there is an increasing interest on the use of non-conventional water sources such as brackish or saline waters. Nowadays, main threat in Europe detected these waterbodies nitrate contamination. Within multiple available methods studied for reduction, photocatalysis presents promising results, but this technology has not yet been tested water. This work tackles elim...

A straightforward chiral pool synthesis for a non-natural calystegin, 3-epi-B2, is described. Key steps of this synthesis include an ultrasound-assisted Zn-mediated tandem ring opening reaction followed by a Grubbs’ catalyst-mediated ring closure metathesis reaction. Compared to calystegin B2, the target compound is no longer an inhibitor for a β -glycosidase hence proving that an equatorial hy...

A mild and general protocol for the Pd(0)-catalyzed heteroannulation of o-bromoanilines and alkynes is described. Application of a Pd(0)/P((t)Bu)3 catalyst system enables the efficient coupling of o-bromoanilines at 60 °C, mitigating deleterious side reactions and enabling access to a broad range of useful unnatural tryptophans. The utility of this new protocol is demonstrated in the highly con...

The growth of carbon nanostructures from vegetable oils using a modified conventional approach is simple and environmentally friendly technology with controllable features. goal this study to develop process for making nanoparticles commercially available, low-cost oils. technique involves the controlled burning “Mustard”, “Olive”, “Linseed” traditional clay lamps collecting soot on ceramic pla...

A direct and scalable route to γ-keto-α,β-unsaturated esters, useful intermediates in medicinal chemistry and natural products synthesis, is reported. The key step involves the use of Grubbs' second-generation olefin metathesis catalyst for cross-metathesis of alkyl acrylates and 2° allylic alcohols. The metathesis step is followed by oxidation to give the desired products in high yield on scal...

A simple, efficient, rapid and transition metal-free methodology has been developed by utilizing vasicine (a natural product), as a catalyst for the synthesis of phenanthridinones and dihydrophenanthridines. The reaction proceeds through intramolecular C-H arylation with aryl halides in the presence of KOtBu as a base under microwave irradiation in sulfolane as a solvent. The reaction proceeds ...

This communication demonstrates the preparation, isolation, and full characterization of superelectrophilic salts based on amidine dications in organic solvent, as their triflate salts. These dications are highly activated toward regiospecific reaction with hydrogen gas under mild conditions in the presence of a metal catalyst (Pd/C), mimicking the behavior of the natural substrate, N(5),N(10)-...