Design, synthesis, and evaluation of unsymmetrical difluoro-boron complexes with imidazoline as potential fungicides

✍ Scribed by Kewei Wang; Jingnan Cui; Lijuan Xie; Xuhong Qian

• Book ID: 102232966
• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 132 KB
• Volume: 20
• Category: Article
• ISSN: 1042-7163
• DOI: 10.1002/hc.20567

✦ Synopsis

A series of unsymmetrical difluoroboron(BF 2 ) complexes with pyridine and imidazoline were synthesized by reaction of new chelating ligands (arylmethyl-imidazolidinylidene)-pyridin-2-ylamine with boron trifluoride diethyl etherate. All the ligands and BF 2 complexes were structurally characterized by IR, HRMS, 1 H, 13 C, 11 B, and 19 F NMR, indicating the bidentate complexation of imidazoline nitrogen and the pyridine nitrogen to the boron center. Evaluation of agricultural bioactivities showed that some of the BF 2 complexes exhibited moderate fungicidal activities, and most of the BF 2 complexes exhibited higher activities than the none-BF 2 complexed substrates.