Recalcitrant SN2 Displacements at Carbon C9 of Quincorine and Quincoridine: 1,2-Amino Halides and Mesylates with Configurationally Rigid Nitrogen
作者:Olaf Schrake、M. Heiko Franz、R. Wartchow、H.M.R. Hoffmann
DOI:10.1016/s0040-4020(00)00330-6
日期:2000.6
SN2 reactions at carbon C9 of Quincorine (QCI) and Quincoridine (QCD) were investigated and found to be difficult, due to the special structural (‘β-amino effect’) and conformational factors. Efficient experimental procedures for displacement with a variety of carbon and heteroatom nucleophiles were developed.
由于特殊的结构(“β-氨基效应”)和构象因素,研究了在奎宁碱(QCI)和奎宁丁(QCD)的碳C9处的S N 2反应是困难的。开发了用于替换各种碳原子和杂原子亲核试剂的高效实验程序。