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.
Synthesis of monosubstituted thioureas by vapour digestion and mechanochemical amination of thiocarbamoyl benzotriazoles
作者:Mateja Đud、Oxana V. Magdysyuk、Davor Margetić、Vjekoslav Štrukil
DOI:10.1039/c6gc00089d
日期:——
Thiocarbamoyl benzotriazoles, as safe and easy-to-handle isothiocyanate equivalents, were quantitatively converted to N-monosubstituted thioureas by vapour digestion synthesis in ammonia atmosphere. This simple, but timely process provided a synthetic platform...