Synthesis of and characterization of some Heterocyclic Compounds derived from Thiophenol
作者:Shaima Ibraheem Chyad AL-Khazraji
DOI:10.21608/ejchem.2021.70759.3559
日期:2021.5.24
This research work involved preparation of heterogeneous pent lateral cyclic compounds (thiazolidine -4- one, benzothiazole, triazole, 4-oxothiazolidin) using thiophenol as raw materials: Thiophenol was reacted with mono chloroacetic acid in the presence of potassium hydroxide to prepare (sh1) followed by ortho amino aniline results the (sh2). The reaction of thiophenol with ethylchloroacetate afforded (sh3) and the reaction of (sh3) with thiosemicarbazide and 4% NaOH leads to ring closure giving 1,2,4- triazole (sh5). A treatment of thiophenol with hydrazine hydrate to obtain the intermediate (sh6) with aromatic aldehyde synthesized azomethines (sh7- sh9) then treated with mercaptoacetic acid to obtained (sh10-sh12). A treatment of thiophenol with chloroacetyl chloride produced (sh13) compound then treated with hydrazine hydrate to obtain (sh14) compound followed by bromobenzaldehyde synthesized azomethine (sh15) compound then treated with mercaptoacetic acid to obtained (sh16) compound. Characterization results for the prepared compounds using IR spectroscopy, NMR and melting points confirmed their chemical structures.
这项研究工作涉及以硫酚为原料制备异质五元环状化合物(噻唑烷-4-酮、苯并噻唑、三唑、4-氧代噻唑烷):硫酚在氢氧化钾的存在下与单氯乙酸反应制备得到(SH1),随后与邻氨基苯胺反应得到(SH2)。硫酚与乙基氯乙酸酯反应生成(SH3),(SH3)与硫代半缩氨基脲和4%氢氧化钠反应导致环闭合,生成1,2,4-三唑(SH5)。硫酚与水合肼处理得到中间体(SH6),随后与芳香醛合成偶氮甲碱(SH7-SH9),然后与巯基乙酸反应得到(SH10-SH12)。硫酚与氯乙酰氯反应生成化合物(SH13),然后与水合肼反应得到化合物(SH14),接着与溴苯甲醛合成偶氮甲碱化合物(SH15),最后与巯基乙酸反应得到化合物(SH16)。通过IR光谱、NMR和熔点对制备的化合物进行表征,确认了它们的化学结构。