Synthesis of <i>N</i>-vinyl isothiocyanates and carbamates by the cleavage of NH-1,2,3-triazoles with one-carbon electrophiles
作者:Vladimir Motornov、Petr Beier
DOI:10.1039/d2ob02115c
日期:——
Metal-free cascade reaction of NH-1,2,3-triazoles with one-carbon electrophiles, such as thiophosgene and triphosgene, led to N-vinylated ring cleavage products. Using this approach the synthesis of N-vinylisothiocyanates from NH-triazoles and thiophosgene was achieved. A variety of multifunctional compounds, such as N-vinylcarbamates, unsymmetrical vinylureas, carbamothioates, etc. was prepared by
NH-1,2,3-三唑与单碳亲电子试剂(如硫光气和三光气)的无金属级联反应导致N -乙烯基化环裂解产物。使用这种方法,实现了从 NH-三唑和硫光气合成N-乙烯基异硫氰酸酯。多种多功能化合物,如N-乙烯基氨基甲酸酯、不对称乙烯基脲、硫代氨基甲酸酯等。由 NH-三唑、三光气和亲核试剂通过一锅法制备。