Halogen-Bonding-Induced Hydrogen Transfer to C═N Bond with Hantzsch Ester
作者:Wei He、Yi-Cen Ge、Choon-Hong Tan
DOI:10.1021/ol501259q
日期:2014.6.20
Several bidentate dihydroimidazolines were prepared and investigated as catalysts for hydrogentransfer reduction of C═Nbond with Hantzsch ester. Highly efficient reactions were observed for quinolines and imines with low catalyst loading of 2 mol %. The presence of halogen bonding was elucidated using NMR studies and isothermal calorimeric titrations. Binding constants of the XB donors were also