The reaction of stoichiometric amounts of dialkyl acetylenedicarboxylates with alkyl isocyanides and 5,5-diaryl thiohydantoins in toluene and catalytic amount of p-TSA afforded imidazo[2,1-b][1,3]thiazines in good overall yields

The adducts produced in the reaction between trialkyl phosphites and acetylenic esters were trapped by hydantoins to produce highly functionalized dialkyl 2-(2,5-dioxo-4,4-diphenylimidazolidin-1-yl) succinate in good yields.

A joint common course has been created as a result of a project of the “Stability Pact of South-Eastern Europe” and DAAD. It has been conducted in Novi Sad, Serbia, with graduate students, and in Tirana, Albania, with master students by teachers from Berlin and Novi Sad. In this paper, similar methods used in each of these courses, and outcomes reached by students are presented and compared wit...

The purpose of this work is synthesis and characterization pryridin-yl-borate esters investigation tribological performance as additive. syn-thesis dialkyl-(2-(pyridin-2-yl) ethyl) borate both in the literature novel dialkyl 2-(methyl (pyridin-2-yl) 2- (5-ethylpyridin-2-yl) ethyl were carried out. boron to be obtained characterized by using IR, 1H NMR,13C NMR spectroscopic methods well physical...

protonation of the highly reactive 1:l intermediate produced in the reaction between triphenylphosphine and dimethyl acetylenedicarboxylate by 2- hydroxyacetophenone leads to vinyltriphenylphosphonium salt, which undergoes aromatic electrophilic substitution reaction with the conjugate base to produce compounds 4,5, and 6 in 1 : 1.2:0.5 ratios

We propose to study the impact parameter dependence of the Λ/p ratio in Pb(160AGeV)+Pb reactions. The Λ/p ratio is a sensible tool to distinguish between hadronic cascade models and hydrodynamical models, which incorporate a QGP phase transition. E-mail: [email protected] e Fellow of the Josef Buchmann Foundation f Feodor Lynen Fellow of the Alexander v. Humboldt Foundation g ...