作者:Mogens Nielsen、Martin Kilde、Søren Broman、Anders Kadziola
DOI:10.1055/s-0035-1560823
日期:——
Bromination of 1,8a-dihydroazulene-1,1-dicarbonitriles (DHA) followed by elimination of HBr was previously shown to be an important protocol for functionalizing these molecular photoswitches in the seven-membered ring (at C7). Here we show systematically how the outcome of the bromination reaction depends on the electronic character of an aryl substituent at the C2 position of DHA, and the solvent
1,8a-dihydroazulene-1,1-dicarbonitriles (DHA) 的溴化然后消除 HBr 以前被证明是在七元环(在 C7)中功能化这些分子光开关的重要协议。在这里,我们系统地展示了溴化反应的结果如何取决于 DHA C2 位芳基取代基的电子特性,以及溶剂极性,因为反应可以导致加成产物或相应的 2-芳基-1 -bromo-3-cyanoazulene。