diameter of about 70 A is observed on the Pd(nano)/HT surface by transmission electron microscopy analysis. These hydrotalcite-supported metal catalysts can effectively promote alpha-alkylation reactions of various nitriles with primary alcohols or carbonylcompounds through tandem reactions consisting of metal-catalyzed oxidation and reduction, and an aldol reaction promoted by the base sites of the
Towards organo-click reactions: development of pharmaceutical ingredients by using direct organocatalytic bio-mimetic reductions
作者:Dhevalapally B. Ramachary、G. Babul Reddy
DOI:10.1039/b612611a
日期:——
Economic and environmentally friendly bio-mimetic one-pot three and four-component Knoevenagel–hydrogenation (K–H), five-component Knoevenagel–hydrogenation–alkylation (K–H–A) and six-component Knoevenagel–hydrogenation–alkylation–Huisgen cycloaddition (K–H–A–HC) reactions of aldehydes, CH-acids, o-phenylenediamine, alkyl halides and azides using proline, proline–metal carbonate and proline–metal carbonate–CuI-catalysis, respectively have been developed. Many of K–H and K–H–A compounds have direct application in pharmaceutical chemistry.
Boots,S.G.; Cheng,C.C., Journal of Heterocyclic Chemistry, 1967, vol. 4, p. 272 - 283
作者:Boots,S.G.、Cheng,C.C.
DOI:——
日期:——
3-Butyl-1-methylimidazolinium borohydride ([bmim][BH4])—a novel reducing agent for the selective reduction of carbon–carbon double bonds in activated conjugated alkenes
A novel ionic reducing reagent, 3-butyl-1-methylimidazolium borohydride ([bmim][BH4]), was synthesized and successfully used for the selective reduction of carbon–carbondoublebonds in conjugated alkenes as well as the α,β-carbon–carbon doublebonds in highly activated α,β,γ,δ-unsaturated alkenes. The reagent can be regenerated and reused several times without losing its activity.