Rapid and efficient thiocyanation of phenols, indoles, and anilines in 1,1,1,3,3,3-hexafluoro-2-propanol under ultrasound irradiation
作者:Zhonghao Wang、Liang Wang、Qun Chen、Ming-yang He
DOI:10.1080/00397911.2017.1390139
日期:2018.1.2
ABSTRACT An efficient ultrasound-promoted thiocyanation of phenols, indoles, and anilines in the presence of N-chlorosuccinimide and NH4SCN using 1,1,1,3,3,3-hexafluoro-2-propanol as the solvent has been developed. The major features of the present protocol include the mild reaction conditions, short reaction times, good to excellent yields, and broad substrate scope. Moreover, scale-up synthesis can
Catalytic Thiourea Promoted Electrophilic Thiocyanation of Indoles and Aromatic Amines with NCS/NH<sub>4</sub>SCN
作者:Cancan Wang、Zhonghao Wang、Liang Wang、Qun Chen、Mingyang He
DOI:10.1002/cjoc.201600344
日期:2016.11
A simple and efficient protocol for the electrophilic thiocyanation of indoles and aromaticamines with thiourea/NCS/NH4SCN system has been developed. The major features of the present procedure are the mild conditions, good yields, short reaction times, and the use of inexpensive and readily available organocatalyst. Moreover, N‐chlorosuccinimide (NCS) was found to be indispensable, and thiourea could
Graphene oxide: a promising carbocatalyst for the regioselective thiocyanation of aromatic amines, phenols, anisols and enolizable ketones by hydrogen peroxide/KSCN in water
作者:Dariush Khalili
DOI:10.1039/c5nj02314a
日期:——
thiocyanation of a variety of arenes including aromatic amines, phenols, anisols and carbonyl compounds that possessing α-hydrogen in the presence of hydrogen peroxide and KSCN in water as a green media. This procedure is chemoselective, avoids the use of precious metals and toxic solvents and has a broad substrate scope. Easy removal from the reaction mixture and recyclability with no loss of activity are