Photochemistry of 3-alkoxychromones: photocyclisation of 2-aryl-6-chloro-3-{(thiophen-2-yl)methoxy}chromones
作者:Ramesh C. Kamboj、Urmila Berar、Surinder Berar、Zeba N. Siddiqui、Satish C. Gupta
DOI:10.1590/s0103-50532010000200012
日期:——
1,4-Biradicals generated upon photo-irradiation of 2-aryl-3-(thiophen-2-yl)methoxy} chromones produced angular tetracyclic products bearing the thienyl group. The dehydrogenation and ring contraction products were also observed depending upon the electron density on the 2-aryl ring.