Vinyl-β-lactams as Efficient Synthons. Eco-friendly Approaches via Microwave Assisted Reactions
作者:Maghar S Manhas、Bimal K Banik、Arvind Mathur、John E Vincent、Ajay K Bose
DOI:10.1016/s0040-4020(00)00409-9
日期:2000.7
interest—such as isocephalosporins, carbapenem and thienamycin intermediates, and pyrrolidine alkaloids. Convenient methods are described for obtaining both enantiomers of some of these synthons. Microwave-induced Organic Reaction Enhancement (MORE) chemistry techniques allow highly accelerated synthesis of variously substituted vinyl-β-lactams using limited amounts of solvents and with efficient stereocontrol—thus
乙烯基-β-内酰胺类化合物是多种具有生物医学意义的化合物的有效合成子,例如异头孢菌素,碳青霉烯和硫霉素中间体以及吡咯烷生物碱。描述了获得一些这些合成子的两种对映体的简便方法。微波诱导的有机反应增强(MORE)化学技术可使用有限的溶剂和有效的立体控制,以高度加速的速度合成各种取代的乙烯基-β-内酰胺,从而实现“高原子经济性”。微波对键角和键长以及过渡态的几何形状的影响(如果有的话)还不是很清楚。但是,在开放系统中微波辐射下的反应是快速,安全的,