A Cu(ii)-catalyzed, effective C–N coupling of 2-aminobenzothiazoles with boronic acids in acetonitrile under open vessel chemistry was achieved.
在开式容器化学反应下,实现了 2-氨基苯并噻唑与硼酸在乙腈中有效的 C-N 偶联。
Synthesis of 2-Aminobenzothiazoles via Copper(I)-Catalyzed Cross-Coupling with Part-Per-Million Catalyst Loadings
作者:Ya-Lei Sun、Yuan Zhang、Xiao-Hui Cui、Wei Wang
DOI:10.1002/adsc.201100054
日期:2011.5.9
An efficient protocol has been developed for the preparation of 2‐aminobenzothiazoles via a copper(I)‐catalyzed tandem reaction of 2‐iodoanilines with isothiocyanates at very low catalyst loadings [typically 50 ppm of copper(I) iodide (CuI)]. A variety of 2‐iodoanilines could be cross‐coupled with isothiocyanates, affording 2‐aminobenzothiazoles in moderate to good yields (49–93%) under the given conditions