作者:Renat Kadyrov
DOI:10.1002/chem.201202207
日期:2013.1.14
conversion into a broad variety of 5–16‐membered heterocyclic compounds. The practicality of this procedure was illustrated in the synthesis of 5–8‐membered N‐tert‐butoxycarbonyl (N‐Boc)‐ and N‐para‐toluenesulfonyl (N‐Ts)‐protected cyclic amines and 9–16‐membered lactones. The synthesis of macrocyclic proline‐based lactams required slightly higher catalyst loadings. Along with monocyclic products, oligomeric
描述了一种有效的闭环复分解反应程序。在几分钟内可以达到95%的二烯丙基丙二酸二乙酯在稀溶液中的转化率,达到TOF = 4173 min -1,而载有不饱和NHC配体的商业化Ru催化剂的负载量却非常低。通常,仅需50至250 ppm的催化剂即可将近定量转化为多种5-16元杂环化合物。此过程的实用性在5-8元的合成图示ñ -叔丁氧羰基(Ñ -Boc) -和ñ -对甲苯磺酰(Ñ-Ts)保护的环胺和9-16元内酯。大环脯氨酸基内酰胺的合成需要稍高的催化剂负载量。与单环产物一起,分离并表征了寡聚副产物,主要是环二聚体。