The reduction of aromatic and aliphatic nitro groups to anilines and amines is performed with good yield and selectivity in short reaction times. A mixture of sodium hypophosphite and phosphinic acid is used in the presence of a heterogeneous catalyst 2.5 mol% of Pd/C (5%) in a biphasic water/2-MeTHF system.
The present invention relates to small molecule compounds and their use as HDAC inhibitors and in the treatment of various diseases, such as cancer. The present invention further relates to methods of synthesizing the compounds and methods of treatment. H-L(HA), H is a head group selected from (head group 1), (head group 2), (head group 3), (head group 4), (head group 5) and (head group 6).
New insights into the catalytic reduction of aliphatic nitro compounds with hypophosphites under ultrasonic irradiation
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