Pyrazoline is an important heterocyclic compound in organic and pharmaceutical industry.
The pyrazoline-based compounds are intensively used in medicines and agricultural …

This study has designed an efficient stepwise synthesis to produce some new pyrazoline
derivatives that contains azo and benzyloxy linkages. The Synthesis route was initiated by …

Background: Pyrazolines and azo-pyrazolines are influential groups of heterocyclic
compounds with two nitrogen atoms inside the five-membered ring. They play an important …

In this work, some of heterocyclic compounds derived from naproxen acid were prepared
and characterized, and their biological activity was evaluated. Naproxen acid chloride (N3) …

In the present study; 5-(4-chlorophenyl azo)-2-hydroxy acetophenone (1) was prepared by
diazotization of 4-chloro aniline and its coupling reaction with 2-hydroxy acetophenone, then …

The title compounds were synthesized by condensation of ethyl acetoacetate, urea and
substituted benzaldehydes resulting pyrimidinones and in treating with hydrazine hydrate …