Mechanochemical Aza-Vinylogous Povarov Reactions for the Synthesis of Highly Functionalized 1,2,3,4-Tetrahydroquinolines and 1,2,3,4-Tetrahydro-1,5-Naphthyridines
作者:José Clerigué、M. Teresa Ramos、J. Carlos Menéndez
DOI:10.3390/molecules26051330
日期:——
performed on a vibratory ball mill operating at 20 Hz and using zirconium oxide balls and milling jar, and afforded 1,2,3,4-tetrahydroquinolines and 1,2,3,4-tetrahydro- 1,5-naphthyridines functionalized at C-2, C-4 and also at C-6, in the latter case. This protocol generally afforded the target compounds in good to excellent yields and diastereoselectivities. A comparison of representative examples
在机械化学条件下,以连续的三组分方式进行芳族胺,α-酮醛或α-甲酸酯与α,β-不饱和二甲基hydr的氮杂-Povarov反应。经过广泛的优化工作,反应在振动球磨机上以20 Hz的频率进行操作,并使用氧化锆球和研磨罐进行操作,得到1,2,3,4-四氢喹啉和1,2,3,4-四氢-1 1,5-萘啶在C-2,C-4以及在C-6处官能化,在后一种情况下。该方案通常以良好的产率和优异的非对映选择性提供了目标化合物。