Microwave assisted synthesis, characterization and thermoacoustical study of a β-naphthol-guanidine-formaldehyde copolymer resin

Abstract

The thermo acoustic parameter evaluation of a β-naphthol-guanidine-formaldehyde copolymer resin for studying hydrogen bonding interactions between the polymer and ethanol as solvent.

Thymol as Starting Material for the Development of a Biobased Material with Enhanced Antimicrobial Activity: Synthesis, Characterization, and Potential Application

“…After the isolation of thymol, different procedures for the polymerization [ 20 ] of this monoterpene with formaldehyde were carried out based on the literature with adaptations [ 33 , 34 ] to provide a material with the chemical structure indicated by Figure 4 . In order to prepare a material with polymeric characteristics, these reactions were optimized by trials to obtain a product with a high molar mass combined with the best purity and yield ( Table 4 ), using different reaction times, temperatures, catalysts, treatments, and ratios of reactants as well as the use of a microwave (MW).…”

Copper ferrite nanoparticles: an effective and recoverable nanomagnetic catalyst for the synthesis of N , N ′, N ″‐trisubstituted guanidines from the addition reaction of anilines to carbodiimide

“…Hence, design and development of effective protocols in order to obtain guanidine derivatives has attracted growing interest during the past decades. In this regard, several methods have been introduced on the basis of employing different guanidylating agents and conditions such as urea, thiourea and isothiourea derivatives [11, 12], cyanamides [13, 14], chloroformamidines [15], aminoiminomethanesulfonic acids [16], microwave‐assisted and mechanochemical techniques [17–20]. Apart from that, carbodiimide derivatives have been regarded as one of the most prevalent reagents for the construction of guanidine‐based scaffolds, chiefly via nucleophilic addition of amines [21].…”