The Catalytic Regio- and Stereoselective Synthesis of 1,6-Diazabicyclo[4.3.0]nonane-2,7-diones
作者:Arthur Lebrêne、Thomas Martzel、Laura Gouriou、Morgane Sanselme、Vincent Levacher、Sylvain Oudeyer、Carlos Afonso、Corinne Loutelier-Bourhis、Jean-François Brière
DOI:10.1021/acs.joc.1c00252
日期:2021.7.2
Knoevenagel-aza-Michael-Cyclocondensation reaction which takes advantage of an unprecedented highly regio- and diastereoselective conjugate addition of pyridazinones to alkylidene Meldrum’s acid intermediates. The key reactive intermediates of this complex process were analyzed by means of electrospray ionization mass spectrometry coupled to ion mobility spectrometry, allowing us to validate the proposed
通过 DBU 有机催化的多组分 Knoevenagel-aza-Michael-Cyclocondensation 反应实现了原始 1,6-二氮杂双环 [4.3.0] 壬烷-2,7-二酮的直接合成,该反应利用了前所未有的高度区域和非对映选择性共轭物添加哒嗪酮到亚烷基 Meldrum 的酸中间体。该复杂过程的关键反应中间体通过电喷雾电离质谱法与离子迁移谱法相结合进行了分析,使我们能够验证所提出的机制。