Substituent effect on di-π-methane reactions of benzopyrazinobarrelenes and benzoquinoxalinobarrelenes
作者:Gary J. Chuang、Chun-Chen Liao
DOI:10.1016/j.tet.2016.01.021
日期:2016.3
To examine the substituent effect on the di-π-methane (DPM) rearrangement of barrelene-like skeleton, benzopyrazinobarrelene (BPB) and benzoquinoxalinobarrelene (BQB) were utilized as the photoreaction experimental platforms. By the installation of the pyrazine, the DPM reaction was limited to aza-di-π-methane reaction only, in terms of chemoselectivity. The results of the induced regioselectivity
为了检查取代基对桶状骨架的二π-甲烷(DPM)重排的影响,将苯并吡嗪并戊烯酮(BPB)和苯并喹喔啉并戊烯酮(BQB)用作光反应实验平台。通过安装吡嗪,就化学选择性而言,DPM反应仅限于氮杂-二-π-甲烷反应。检查了诱导的BPM和BQB的DPM重排的区域选择性的结果,该BPB和BQB具有连接到烯烃/桥头位置的多种不同取代基。