The synthesis of nitrogen containing heterocycles is of great importance in modern science,
owing to their valuable biological properties, and endocyclic hydrazinocycles are no …

Heterocycles with potential bioactive properties are of greater interest to researchers
engaged in the areas of natural product synthesis and heterocyclic methodology. Several …

In this paper the novel N-cycloalkyl-(cycloalkylaryl)-2-[(3-R-2-oxo-2H-[1, 2, 4] triazino [2, 3-c]
quinazoline-6-yl) thio] acetamides synthesis by aminolysis of activated by thionyl chloride or …

Background and Objective: It may seem that the reaction first performed over 120 years ago
is an out of date subject on which everything has been said and there is nothing left to be …

Abstract Potassium 8-R1-9-R2-10-R3-3-R-2-oxo-2H-[1, 2, 4] triazino [2, 3-c] quinazoline-6-
thiolates 2.1–2.26 were synthesized via cyclocondensation of 6-R-3-(3-R1-4-R2-5-R3 …

Pyrazole category with all derivatives have well-known with biological and industrial
applications. Pyrazole combined with other cycle (aliphatic or heterocycles) through one …

It has been shown that 2-aryl-[1, 2, 4] triazolo [1, 5-c]-quinazolines under the action of
nucleophilic agents (hydrazine hydrate, sodium hydroxide, sodium methoxide, hydrochloric …

It has been shown that heating of 3-R-[1, 2, 4] triazino [2, 3-c] quinazolin-2-ones with 5-fold
excess of hydrazine hydrate in propanol-2 gave the corresponding 3-(2-aminophenyl)-6-R …

Abstract Several novel 6-thio-3-R-2-oxo-2H-[1, 2, 4] triazino [2, 3-c] quinazoline-based
compounds containing an ω-(dialkylamino (heterocyclyl)] alkyl fragment were synthesized to …

The structural diversity of spiro heterocycles has achieved an extensive attention of organic
chemists due to their vast synthetic applications. Among these, spiropyrazolines are gaining …