Search
CSV
RISVicarious nucleophilic substitution in nitro derivatives of imidazo[1,2-a]pyridine
Reactions of nitro derivatives of imidazo[1,2-a]pyridine with carbanions containing leaving groups and also with hydroxylamine in basic media give the products of vicarious nucleophilic substitution of hydrogen....
The synthesis of 1,2-Ethanediylbis (triphenylphosphonium) ditribromideas a New Brominating Agent in The Presence of Solvents and Under Solvent Free Conditions
Abstract1,2-Ethanediylbis(triphenylphosphonium) ditribromidewas quantitatively prepared and used for the bromination of anilines and phenols in the presence of a mixtured solvents system (DCM/MeOH 2:1) and also under solvent ...
Synthesis of the new heterocyclic system 7,8-dihydro-6H-benzotetrazolothiadiazine and derivatives
New N,N-disubstituted 7,7-dimethyl-7,8-dihydro-6H-benzotetrazolothiadiazine-9-amines were synthesized
from sodium 1-amino-1H-tetrazole-5-thiolate and 2-bromo-5,5-dimethylcyclohexane-1,3-dione in multiple steps. The ...
Synthesis of a novel fused tricyclic heterocycle, pyrimido[5,4- e ][1,4]thiazepine, and its derivatives
Sequential treatment of 5-bromo-2,4-dichloro-
6-(chloromethyl)pyrimidine with 2-aminothiophenol
and secondary amines afforded a series of 2-[(5-bromo-
2-chloro-6-aminopyrimidin-4-yl)methylthio]aniline ...
An efficient synthesis of imidazo[4,5-a]acridine-11-yl cyanides as new fluorescent heterocylic compounds
One of the most general mechanisms to transforming of δH-adducts into products of nucleophilic substitution of hydrogen is conversion of δH-adducts into nitroso compounds under proper conditions. This conversion occurs usually in protic solvents...