Estelle Metay

Selective Catalytic Oxidation of Diglycerol The selective oxidation of α,α-diglycerol was studied using oxygen as a clean oxidant in the presence of a palladium / neocuproine complex. After optimization of the reaction parameters, the mono-oxidation product was obtained with 93% NMR yield (up to 76% isolated yield). The product was named “diglycerose” considering that it mainly exists as a cyclic hemi-ketal form. You have access to this article Please wait while we load your content...

The -alkylation of acetophenone with benzyl alcohol through borrowing hydrogen has been studied using nickel catalysis. Ni/SiO2-Al2O3 was found to be the best catalyst for this transformation and the corresponding alkylated acetophenone was obtained with 93% isolated yield. Following the objectives of clean and sustainable chemistry, the reaction occurs under solvent-free conditions and requires only a catalytic amount of base.

This work describes an efficient process for reduction of nitro compounds to the corresponding amines with a catalytic amount of Pd/C (0.6%mol), a mixture of sodium hypophosphite and hypophosphorous acid as reducing agent in H2O/2-MeTHF at 60?C. The reaction was optimized under silent conditions. The conditions for the in-situ production of H2 using the mixture NaH2PO2/H3PO2 were studied. The influence of ultrasonic activation was investigated both in terms of efficiency and kinetics.