Abstract o‐Aminothiophenol reacted with ketones and β‐keto esters in the presence of alumina under mild and solvent‐free conditions to afford the corresponding benzothiazolines in high yields. Alumina can be reused for subsequent reactions without any loss of the activity.
Solvent-Free Synthesis and Safener Activity of Sulfonylurea Benzothiazolines
作者:Ying Fu、Jing-Yi Wang、Dong Zhang、Yu-Feng Chen、Shuang Gao、Li-Xia Zhao、Fei Ye
DOI:10.3390/molecules22101601
日期:——
A series of novel sulfonylurea benzothiazolines was designed by splicing active groups and bioisosterism. A solvent-free synthetic route was developed for the sulfonylurea benzothiazoline derivatives via the cyclization and carbamylation. All compounds were characterized by IR, 1H-NMR, 13C-NMR, HRMS. The biological activity tests indicated the compounds could protect maize against the injury caused