Facile synthesis of substituted 2,3,4,7-tetrahydro-1H-azepines via ring-closing metathesis
作者:Sascha Brass、Hans-Dieter Gerber、Stefanie Dörr、Wibke E. Diederich
DOI:10.1016/j.tet.2005.11.049
日期:2006.2
A highly efficient synthesis based on inexpensive and readily available starting material towards the pharmacologically interesting class of substituted 2,3,4,7-tetrahydro-1H-azepines via a ring-closing metathesis (RCM) approach employing Grubbs catalysts 1 and 2 is described. The influence of the substituents R1 and R2 on the outcome of the RCM reaction is discussed. The seemingly first example of
基于廉价和易于获得的起始原料,通过使用Grubbs催化剂1和2的开环易位(RCM)方法,对取代的2,3,4,7-四氢-1 H-氮杂庚烷类药理学感兴趣的高效合成方法为描述。讨论了取代基R 1和R 2对RCM反应结果的影响。提出了利用Grubbs催化剂1对在烯烃部分带有取代基的七元氮杂环化合物进行RCM方法的第一个例子。