A coupling reaction between cyclic N-acyliminium ions with organozinc reagents is described. The cyclic N-acyliminium ions, generated in situ from N-substituted-5-hydroxy-2-pyrrolidinones by treatment with BF3-etherate or ...

Abstract: Silver nanoparticles (AgNPs) are used for their powerful antibacterial e ect and their ability to adhere to surfaces due to their size; they are used in di erent areas of life, mainly in the area of health as ...

The synthesis of novel of 4,5,6,7-tetrahydrobenzoxazol-2-ones is herein reported. They were obtained in moderate to good yields by a highly regio- and stereoselective Diels-Alder cycloaddition of N-substituted exo-oxazolidin-2-one ...

Lemon essential oil (LEO) emulsions were prepared using mesquite gum (MG) - chia mucilage (CM) mixtures (90-10 and 80-20 MG-CM weight ratios) and MG as control sample, LEO emulsions were then spray dried for obtaining the ...

Debido a su amplio uso en hormonoterapia de sustitución, además de sus usos como promotor de crecimiento en la industria ganadera; el 17-β-estradiol es el fármaco esteroideo más prescrito alrededor del mundo, se reporta ...

La ocurrencia de la sucralosa (SUC) ha sido demostrada mediante la determinación de concentraciones en agua que van desde ng/L hasta 􏰀g/L. Un estudio previo realizado por nuestro grupo de investigación demostró que la ...

The biosynthesis of Pt-nanoparticles (Pt NPs) supported on bovine bone powder was conducted by an environmentally friendly method that consists on immersing bovine bone powder into a Pt4+ metal ion solution at room ...

Sucralose (SUC) is an organochlorine that is used as a common sweetener in different dietary products around the world. Its extended use and production have led to this product is released into the environment in concen- ...

The Madín Dam is a reservoir located in the municipalities of Naucalpan and Atizapa n, in the metropolitan area adjacent to Mexico City. The reservoir supplies drinking water to nearby communities and provides an area for ...

En este trabajo se desarrolló un sustrato en dos dimensiones de poliestireno basado en nanoestructuras de oro y de plata. Para obtener el sustrato en dos dimisiones primero se sintetizaron nanopartículas de oro y de plata. ...