1,3-Dipolar cycloaddition of nitrilimines to 2,4-disubstituted-3H-1,5-benzodiazepines: remarkable effect of C4-substituent on diastereoselectivity
作者:Khadija Nabih、Abdesselam Baouid、Aissa Hasnaoui、Mohamed Selkti、Philippe Compain
DOI:10.1039/b303995c
日期:——
The one-step synthesis of new bis[1,2,4-triazolo][4,3-a:3′,4′-d][1,5] benzodiazepines by way of completely regio- and diastereoselective 1,3-dipolar cycloaddition of nitrilimines to 2,4-dimethyl-3H-1,5-benzodiazepines is reported and a tentative rationalization for the observed diastereoselectivity, which underline the key effect of the C4-dipolarophile substituent, is proposed.
通过完全区域和非对映选择性的 1,3-二极环负载,一步合成新的双[1,2,4-三唑并][4,3-a:报告中介绍了通过硝基亚胺与 2,4-二甲基-3H-1,5-苯并二氮杂卓的完全区域和非对映选择性 1,3 双极环加成,一步合成新的双[1,2,4-三唑并][4,3-a: 3′,4′-d][1,5]苯并二氮杂卓的方法,并对观察到的非对映选择性提出了初步的合理解释,强调了 C4-双极性取代基的关键作用。