A facile and efficient formation of 2-aminobenzothiazoles by a copper(II)-promoted one-pot cascade process was developed. The desired 2-aminobenzothiazoles were synthesized in good to excellent yields (up to 97 %) in the presence of Cu(OAc)(2) and K2CO3, a variety of functional groups on 2-iodoanilines could be tolerated. The method features ligand-free and mild reaction conditions and good yields
Room‐Temperature Dialkylamination of Chloroheteroarenes Using a Cu(II)/PTABS Catalytic System
作者:Harshita Shet、Manisha Patel、Jyoti M. Waikar、Pavan M. More、Yogesh S. Sanghvi、Anant R. Kapdi
DOI:10.1002/asia.202201006
日期:2023.1.3
relevant molecules and methodologies to install these efficiently are highly desirable. We report herein a highly efficient, room-temperature dimethylamination of chloroheteroarenes performed via the in-situ generation of dimethylamine using N,N-dimethylformamide (DMF) as precursor with a large substrate scope that includes various heteroarenes, purines as well as commercially relevant drugs such as
Electro-oxidative three-component cascade coupling of isocyanides with elemental sulfur and amines for the synthesis of 2-aminobenzothiazoles
作者:Peng-Fei Huang、Jia-Le Fu、Ying Peng、Jian-Hong Fan、Long-Jin Zhong、Ke-Wen Tang、Yu Liu
DOI:10.1039/d4ob00432a
日期:——
in various functional compounds. Herein, we disclose an electro-oxidative three-component reaction for the effective synthesis of 2-aminobenzothiazoles under mild conditions, utilizing non-toxic and abundant elemental sulfur as the sulfur source. Both aliphatic amines and aryl amines demonstrate good compatibility at room temperature, highlighting the broad functional group tolerance of this approach
A highly efficient synthetic method for the preparation of 2-aminobenzothiazoles starting from arylthioureas has been reported. By using a nickel catalyst, arylthioureas undergo intramolecular oxidative C-H bond functionalization, giving the desired 2-aminobenzothiazoles in good to excellent yields. This protocol features an inexpensive catalyst, low catalyst loading, mild reaction conditions, a short