A practical synthesis of 2-aminobenzothiazoles via copper(I)-catalyzed tandem reaction of 2-iodoanilines with isothiocyanates in ionic liquids
作者:Ling Chen、Bin Huang、Quan Nie、Mingzhong Cai
DOI:10.1002/aoc.3453
日期:2016.6
copper(I)‐catalyzedtandemreaction of 2‐iodoanilines with isothiocyanates was achieved in hydrophobic [bmim][PF6] ionicliquid under mild conditions, generating a variety of 2‐aminobenzothiazoles in good to excellent yields. The tandemreaction that was carried out in [bmim][PF6] has some obvious advantages such as accelerated reaction rate and increased yield as compared with the reaction run in volatile
Postsynthetic modification of IRMOF-3 with a copper iminopyridine complex as heterogeneous catalyst for the synthesis of 2-aminobenzothiazoles
作者:Jie Liu、Xiaobin Zhang、Jin Yang、Lei Wang
DOI:10.1002/aoc.3109
日期:2014.3
A copperiminopyridinecomplex has been immobilized on to a metal–organic framework (MOF) through postsyntheticmodification of IRMOF‐3. The modified MOFs were fully demonstrated by using a variety of methods, and the structural integrity of the modified MOFs has been confirmed by powder X‐ray diffraction (XRD). Furthermore, it was shown that the modified IRMOF‐3 can act as an efficient solid catalyst
An FeCl3-catalyzed tandemreaction of 2-iodoaniline with isothiocyanate in water is described, which provides an environmentally benign, efficient, and practical route for the generation of 2-aminobenzothiazole. This present tandem process shows broad substrate scope in the presence of octadecyltrimethylammonium chloride as a phase-transfer catalyst. In addition, the reaction media can be recovered
A practical synthesis of 2-aminobenzothiazoles via the tandem reactions of 2-haloanilines with isothiocyanates catalyzed by immobilization of copper in MCM-41
作者:Ruian Xiao、Wenyan Hao、Jinting Ai、Ming-Zhong Cai
DOI:10.1016/j.jorganchem.2012.01.014
日期:2012.5
The heterogeneous tandemreactions of 2-haloanilines with isothiocyanates were achieved in DMSO using Et3N as base at 80 °C in the presence of a 3-(2-aminoethylamino)propyl-functionalized MCM-41-immobilized copper(II) complex [MCM-41-2N-CuSO4], yielding a variety of 2-aminobenzothiazoles in good to excellent yields. This heterogeneous copper catalyst exhibited higher activity than CuSO4 and can be