Base/Solvent Controlled Divergent Synthesis of Norbornane-Fused Dihydrophenanthrenes and Triphenylenes via Palladium Catalyst
作者:Maryam Dehghan、Mehran Ghasemi、Farnaz Jafarpour、Alireza Abbasi
DOI:10.1021/acs.orglett.3c02577
日期:2023.10.20
base/solvent controlled divergent synthesis for the construction of polycyclic hydrocarbons has been developed. In this process, norbornene through a reagent role leads to the synthesis of norbornane-fused dihydrophenanthrenes, which are essential due to their biological activities. Amazingly, by switching solvent and base, the role of norbornene becomes limited to a mediator/catalyst; therefore, it
已经开发出用于构建多环烃的碱/溶剂控制的发散合成。在此过程中,降冰片烯通过试剂作用导致降冰片烷稠合二氢菲的合成,这对于其生物活性至关重要。令人惊讶的是,通过切换溶剂和碱,降冰片烯的作用变得仅限于介体/催化剂;因此,它从最终的支架中移除,并且苯并菲被区域选择性地合成。此外,通过从反应条件中去除降冰片烯,建立了一条不同的途径,合成具有优异区域选择性的不对称取代的苯并菲。该反应包括以化学和区域选择性方式罕见的多米诺骨牌脱羧/C-H 激活/环化。