a highly efficient, simple and green solvent-free protocol for the preparation of poly-substituted quinolines via friedländer hetero-annulation reaction between 2-aminoaryl ketones and carbonyl compounds in the presence of silica-supported p2o5 (p2o5 / sio2) is described. in this method, the title compounds are obtained in high to excellent yields and in short reaction times.

In this context, (Caffeine)(tetrahydroborato)zinc complex as white stable reducing agents [Zn(BH 4 ) 2 (caf)], has been prepared by complexation of one equimolar amounts of zinc tetrahydroborate and one equimolar amounts of caffeine at room temperature. Also, [Zn(BH 4 ) 2 (caf) ]has been used for reduce of a variety of carbonyl compounds such as aldehydes, ketones, α, βunsaturated carbonyl comp...

The single electron transfer (SET) reactivity of metal alkyls and hydrides is currently receiving growing attention [1-3]. Thus, it has been demonstrated that aluminum species AIX3 (X = R [4], H [5], Cl [6]) can react with reducible carbonyl compounds to form aluminium containing radical complexes [4-6]. Besides carbonyl compounds, certain N-heterocycles can also be used as electron transfer su...

Introduction Conclusions References

Treatment of benzotrifluorides with sodium dispersion in the presence bis(pinacolato)diboron results diborative reduction to yield corresponding diborylbenzylsodium species. The anionic species react not only reactive organic halides but also aromatic carbonyl compounds alkenylboron via Peterson-type olefination. success generation lies immediate capture initially formed unstable difluorobenzyl...

Abstract Reduction reactions of unsaturated compounds are fundamental transformations in synthetic chemistry. In this context, the reduction polarized double bonds such as carbonyl or C=C motifs can be achieved by hydrogenation reactions. We describe here a highly chemoselective Mn(I)-based PNP pincer catalyst for hydrosilylation aldehydes and ketones employing polymethylhydrosiloxane (PMHS) in...