1-(Alkyl/Arylthiocarbamoyl)benzotriazoles as Stable Isothiocyanate Equivalents: Synthesis of Di- and Trisubstituted Thioureas
作者:Alan R. Katritzky、Stephane Ledoux、Rachel M. Witek、Satheesh K. Nair
DOI:10.1021/jo035680d
日期:2004.4.1
1-(Alkyl/arylthiocarbamoyl)benzotriazoles 4a−i were synthesized in yields of 91−99% from bis(benzotriazolyl)methanethione (3). Reagents 4a−g were then used as isothiocyanate equivalents for the efficient synthesis of 10 secondary and 14 tertiary thioureas in high-yielding, convenient processes.
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 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.