Phototransformation of 3-alkoxychromenones: regioselective photocyclisation and dealkoxylation
作者:Radhika Khanna、Aarti Dalal、Ramesh Kumar、Ramesh C. Kamboj
DOI:10.1039/c5pp00318k
日期:2015.12
observed through ring closure at the 2'-position. This behaviour has been found to be in accordance with the directive influence observed in free radical aromatic substitutions. This regioselective photocyclisation is further supported by calculations made from 3D structures (MM2 program). In addition, during the irradiation of these substrates, 2-(3-methoxyphenyl)-4H-chromen-4-ones were also realised through