Diels-Alder reactions of 2(1H)-quinolones having an electron-withdrawing group at the 4-position with 1,3-butadiene derivatives were carried out to give the phenanthridones richly functionalized under the conditions of atmospheric and high pressure. Furthermore, the reactivities of 4-substituted 2(1H)-quinolones acting as a dienophile were examined using MO calculation.

To accelerate reactive events in molecular dynamics simulations we introduce a general bias potential scheme which depends only on the electronic degrees of freedom of the reactive system. This electronic reaction coordinate, which is expressed in terms of a penalty function of the one-electron orbital energies, has been applied to study different reaction pathways of s-cis-butadiene. Three dif...

Composites of styrene-butadiene-styrene (SBS) block copolymer with multiwall carbon nanotubes (MWCNT) were processed by solution casting in order to investigate the influence of filler content, the different ratio of styrene/butadiene in the copolymer and the architecture of the SBS matrix on the electrical, mechanical and electro-mechanical properties of the composites. It was found that fille...

We first found experimentally a cycloaddition reaction of a molecule on a symmetry Si pair, 1,3-butadiene on the Si adatom pair of Si(111)7x7, while up to now only asymmetric Si pairs were reported to be involved in cycloaddition reactions on Si surfaces. As the symmetry of a Si pair is expected to influence significantly a cycloaddition product and a reaction pathway, the [4+2]-like cycloaddit...

Abstract The attempted syntheses of 3,4‐dimethylborole derivatives further bearing bulky SiMe 2 t‐ Bu groups in 2,5‐position are reported. Isolation base‐stabilized adducts to the chloroborole were achieved. respective free borole was found be unstable and revealed 1,3‐hydrogen atom shift isomerization a 1‐bora‐1,3‐butadiene with an s‐trans orientation lacking cyclic conjugation π‐system. Compu...

The possibility of using the cation-exchange resin Lewatit K2420 as a catalyst for synthesis 1,3-butadiene from isopropyl alcohol and formaldehyde solution in one technological stage has been shown. regularities process have established influence form (a cyclic trimer 1,3,5-trioxane 37% water) on composition reaction mass yield main by-products assessed. It shown that heterogeneous showed catal...

The monitoring of the Volatile Organic Compounds (VOCs) in atmosphere is great significance for reducing chemical pollution, warning fires, and improving air quality. Among VOCs, 1,3-butadiene essential to monitor as a carcinogenic environmental pollutant. space-based detection was made possible by recently development infrared satellites advances spectroscopic techniques. In this work, based o...