d-Aminoacylase-initiated cascade Aldol condensation/Robinson annulation for synthesis of substituted cyclohex-2-enones from simple aldehydes and acetone
作者:Ziwei Xiang、Yiru Liang、Xiang Chen、Qi Wu、Xianfu Lin
DOI:10.1007/s00726-014-1747-6
日期:2014.8
As an important building block, developing efficient and green synthesis strategy of cyclohex-2-enones is of great importance. In this present work, a general approach to the mild synthesis of substituted cyclohex-2-enones derivatives starting fro m simple aldehydes and acetone have been achieved via d-aminoacylase-initiated Aldol condensation/Robinson annulation cascade reaction using imidazole as
<i>L</i>-Lysine/imidazole-catalyzed Multicomponent Cascade Reaction: Facile Synthesis of C5-substituted 3-Methylcyclohex-2-enones
作者:Ziwei Xiang、Zhiqiang Liu、Yiru Liang、Qi Wu、Xianfu Lin
DOI:10.1002/cjoc.201300367
日期:2013.8
A facile and simpleroute for the direct preparation of substituted 3‐methylcyclohex‐2‐enone via Aldol‐Robinson cascade reaction of aldehydes and acetones catalyzed by the new catalytic system of L‐lysine/imidazole in n‐heptane with 0.5% water was reported. A variety of substrates can participate in the process efficiently. The merits of this method included inexpensive and easily available starting
AbstractDie Synthesewege zu folgenden Substanzen werden beschrieben: 1‐Methyl‐3‐(2‐aminoäthyl)‐piperidin, 1‐Methyl‐3‐(3‐aminopropyl)‐piperidin, 1‐Methyl‐3‐(2‐aminopropyl)‐piperidin, 1‐Methyl‐3‐(3‐aminobutyl)‐piperidin und 1‐Methyl‐3‐(3‐amino‐3‐phenyl‐propyl)‐piperidin.