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RISSynthesis of some derivatives of pyrimido[5,4-e]tetrazolo[5,1-c][1,2,4]triazine; a novel heterocyclic system
Several new derivatives of pyrimido[5,4-e]tetrazolo[5,1-c][1,2,4]triazine have been synthesised through the reaction of 5-hydrazinyl-1H-tetrazole with 5-bromo-2,4-dichloro-6-methylpyrimidine in CHCl3 solution at ambient ...
Nano-sized La0.5Ca0.5CoO3-mediated reduction by NaBH4 of aryl nitriles to bis-(benzyl)amines
Nano-sized La0.5Ca0.5CoO3 perovskite, which was produced via the sol-gel method, was an efficient heterogeneous catalyst in combination with NaBH4 for the rapid chemoselective reduction of aryl nitriles to bis-(benzyl)amines ...
An Alternative Regioselective Approach for the Synthesis of Highly Functionalized Derivatives of Pyrazolo[5,1-b]purine Scaffold
A straightforward approach for the regioselective synthesis of highly functionalized pyrazolo[5,1-b]purine
from the annulation of 6-bromo-3-cyano-2-(ethylthio)-5-methyl-7-oxo-6,7-dihydropyrazolo[1,5-a]pyrimidine
with ...
Synthesis of hydroxyl terminated nano-PAMAM dendrimer and its pharmaceutical evaluations
Nano dendrimers are a branch of nano particle group that are interested in variety of fields [1]. Because of their ability to confinement of molecules in their branches or ability to connection with the functional surface ...
Efficient and Versatile Acetylation of Diverse Alcohols and Phenols with Acetic Anhydride Catalyzed by Fe2O3 Nanoparticles 3
Alcohols and phenols protection is one of the most broadly used reactions in organic synthesis [1,2] and can be normally obtain by acylation with anhydrides or acyl chlorides in the presence of tertiary amine bases like ...
Reduction of Nitrile Containing Compounds To Primary and Secondary Amines by NaBH and Nano Catalyst La 0.5 Ca 0.5 CoO 3 4
Background: One of the commonly utilized method for the conversion of nitriles to amines is the hydrogenation in the presence of a transition metal as catalyst at elevated temperature and pressure.[1] On the other hand, ...
An efficient method for the conversion of aldehydes to nitriles in the presence of sulfamic acid as catalyst
Nitriles are useful functional groups in synthetic organic chemistry. The most common and well-known
procedure for the preparation of nitriles is the nucleophilic displacement of substrates with suitable ...
Synthesis of Novel Derivatives of Pyrazolo[5,1-b]purine: A Straightforward Approach
Introduction: Purine is a privileged nitrogen-containing heterocycle which exists in various bioactive compounds. The biological importance of purines has led to an interest in synthesis of them with pharmaceutical properties ...