Synthesis and characterization of thiourea-Reference-Cited by-同舟云学术

Synthesis and characterization of thiourea

Published:2019-09-01 Issue:3 Volume:21 Page:35-39
ISSN:1899-4741
Container-title:Polish Journal of Chemical Technology
language:en
Short-container-title:

Author:

Dai Chuanbo¹,Zhang Hongyu²³¹,Li Ruiduan³,Zou Haifeng²

Affiliation:

1. Jiaying College , Meizhou 514021 , China

2. Jilin University , College of Chemistry , Changchun 130021 , China

3. Jilin Institute of Chemical Technology , Jilin 132022 , China

Abstract

Abstract Herein, a simple and effective method for the preparation of thiourea using a nucleophilic substitution reaction is reported. Urea and Lawesson’s reagent were used as the raw materials to prepare thiourea via a one-step method involving the sulfuration reaction, and the reaction mechanism was analyzed. The effect of the reaction time, reaction temperature, and mass ratio of the raw materials on the yield of thiourea were investigated.The most beneficial conditions used for the reaction were determined to be: Reaction time = 3.5 h, reaction temperature = 75°C, and mass ratio of urea to Lawesson’s reagent = 2:1. Under these optimal conditions, the average yield of thiourea over five replicate experiments was 62.37%. Characterization using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD) and thermogravimetric analysis (TGA) showed that the as-synthesized substance was thiourea. Our synthetic method has the advantages of high yield, mild reaction conditions and simplicity.

Publisher

Walter de Gruyter GmbH

Subject

General Chemical Engineering,General Chemistry,Biotechnology

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