New intramolecular cyclization and rearrangement processes based on the radical aryl-aryl coupling of arylsubstituted 2-azetidinones
作者:Benito Alcaide、Alberto Rodríguez-Vicente
DOI:10.1016/s0040-4039(98)01373-2
日期:1998.9
2-azetidinones having fused or not biaryl units are easily prepared by the tin-mediated, intramolecular aryl-aryl radical cyclization of readily available arylsubstituted 2-azetidinones. The regioselectivity and efficiency of the process is determined both by the length of the linking chain through the β-lactam nucleus and by the number and position of the substituents on the aromatic acceptor ring.
通过容易获得的芳基取代的2-氮杂环丁酮的锡介导的分子内芳基-芳基自由基环化,可以容易地制备具有稠合或不具有联芳基单元的新的多环2-氮杂环丁酮。该方法的区域选择性和效率既取决于通过β-内酰胺核的连接链的长度,也取决于芳族受体环上取代基的数量和位置。