Pd/Al 2 O 3 -catalysed regioselective N -1-modification of benzotriazoles using iodonium salts
作者:Dmitry V. Davydov、Yurii F. Oprunenko、Irina P. Beletskaya
DOI:10.1016/j.tetlet.2017.10.033
日期:2017.11
The Pd/Al2O3-catalysed N-modification of symmetrically substituted benzotriazoles using diaryl-, alkenyl- and ethynyliodonium salts took place regioselectively at the N-1-position of the benzotriazole ring.
使用二芳基-,烯基-和乙炔基碘鎓盐的对称取代的苯并三唑的Pd / Al 2 O 3催化的N-修饰在苯并三唑环的N -1位区域选择性地发生。
Regioselective N1- or N2-modification of benzotriazoles with iodonium salts in the presence of copper compounds
作者:Dmitry V. Davydov、Vladimir V. Chernyshev、Victor B. Rybakov、Yurii F. Oprunenko、Irina P. Beletskaya
DOI:10.1016/j.mencom.2018.05.019
日期:2018.5
Modification of benzotriazoles with iodonium salts [diphenyl- and ( E )-styrylphenyliodonium tosylates] occurs at the N 1 -position in the presence of K 2 CO 3 as a base and CuI as a catalyst in CH 2 Cl 2 , whereas in the presence of stoichiometric amount of [Cu 2 (TMEDA) 2 (OH) 2 ]Cl 2 complex regioselective N 2 -modification proceeds. Two new Cu I complexes based on benzotriazoles were synthesized