作者:Thanh Binh Nguyen、Tuan Minh Nguyen、Pascal Retailleau
DOI:10.1002/chem.201905597
日期:2020.4.9
waxy or even insoluble stilbazoles. Moreover, the oxalic acid loading could be lowered to sub-stoichiometric amounts. When further optimizations were needed, our strategy was found to be highly flexible to identify other oligocarboxylic acids as alternative additive to improve or even overturn regioselectivity. Oxalic acid and other oligocarboxylic acids were found to be capable of orienting more than
在这项研究中,我们报道了一种非常简单的技术,可以有效地对某些乙烯基吡啶进行光二聚化。通过用几种苯乙烯基唑与分散在非极性(例如环己烷)或中等极性(苯,二氯甲烷,二恶烷)溶剂中的固体草酸二水合物的搅拌混合物进行辐照,可以高收率获得相应的二聚环丁烷加合物,具有极好的区域选择性。和立体选择性。该策略也可以成功地应用于油性,蜡质或什至不溶性斯蒂巴唑。此外,草酸负载量可降低至亚化学计量量。当需要进一步优化时,我们的策略非常灵活,可以确定其他低聚羧酸作为替代添加剂,从而改善甚至推翻区域选择性。