1,5,7-Triazabicyclo[4.4.0]dec-5-ene (TBD) Triggered Diastereoselective [3+2] Cycloaddition of Azomethine Imines and Pyrazoleamides
作者:Chiara Volpe、Sara Meninno、Amedeo Capobianco、Giovanni Vigliotta、Alessandra Lattanzi
DOI:10.1002/adsc.201801567
日期:2019.3.5
2‐a]‐pyrazole‐1,7‐diones, bearing up to three stereocentres, by reacting ready available N,N′‐cyclic azomethine imines and pyrazoleamides under catalytic loading of commercial 1,5,7‐triazabicyclo[4.4.0]dec‐5‐ene (TBD), has been developed. The products are obtained in good yields and high diastereoselectivity, working at room temperature. Preliminary bioassay showed the products to inhibit growth of Gram‐positive
一种实用且温和的方法,通过在市售催化剂1的催化负载下,使现成的N,N'-环偶氮甲亚胺和吡唑酰胺反应,制得多达三个立体中心的四氢吡唑并[1,2-a]-吡唑-1,7-二酮。已开发了5,5,7-三氮杂双环[4.4.0] dec-5-ene(TBD)。在室温下工作时,以高收率和高非对映选择性获得产物。初步的生物测定显示该产品抑制了革兰氏阳性细菌的生长。