Thiocarbonyl Surrogate via Combination of Sulfur and Chloroform for Thiocarbamide and Oxazolidinethione Construction
作者:Wei Tan、Jianpeng Wei、Xuefeng Jiang
DOI:10.1021/acs.orglett.7b00819
日期:2017.4.21
An efficient and practical thiocarbonyl surrogate via combination of sulfur and chloroform has been developed. A variety of thiocarbamides and oxazolidinethiones have been established, including chiral thiourea catalysts and chiral oxazolidinethione auxiliaries with high selectivity. Meanwhile, pesticides Diafenthiuron (an acaricide), ANTU (a rodenticide), and Chloromethiuron (an insecticide) were
A Concise Synthesis of Substituted Thiourea Derivatives in Aqueous Medium
作者:Mahagundappa R. Maddani、Kandikere R. Prabhu
DOI:10.1021/jo1001593
日期:2010.4.2
An efficient method for the synthesis of symmetrical and unsymmetrical substituted thiourea derivatives by means of simple condensation between available building blocks such Lis airlines and carbon disulfide in aqueous medium is presented. This protocol works smoothly with aliphatic primary amines to afford various di- and trisubstituted thiourea derivatives. The present method is also useful ill synthesizing various substituted 2-mercapto imidazole heterocycles. This method proceeds through a xanthate (amino dithiol deivative) intermediate, unlike isothiocyanate as in all earlier known method.
A green, isocyanide-based three-component reaction approach for the synthesis of multisubstituted ureas and thioureas
作者:Anikó Angyal、András Demjén、János Wölfling、László G. Puskás、Iván Kanizsai
DOI:10.1016/j.tetlet.2017.11.053
日期:2018.1
isocyanide based multicomponent protocol was presented starting from secondary amines towards (thio)urea derivatives and utilized for the construction of a diverse 27-membered chemical library. Following a green compatible microwave assisted condition, the formed N,N′-multisubstituted (thio)ureas were obtained in up to 85% yield.