Photochromism of dihydroindolizines. Part XX: Synthesis and photophysical behavior of fluorenyldihydroindolizines photochromes based “Click” chemistry strategy
作者:Saleh A. Ahmed、Ismail I. Althagafi、Basim H. Asghar、Khalid S. Khairou、Hussni A. Muathen
DOI:10.1016/j.jphotochem.2016.05.025
日期:2016.9
spectroscopic tools. Polychromatic light irradiation of the photochromic DHIs led to ring opened colored betaines, which underwent reversible thermal 1,5-electrocyclization. The red to reddish-violet betaines returned back through 1,5-electrocyclization to the corresponding DHIs with diverse rate constants depending on the subsitutents in fluorene terminal triazole moieties. The unique photochromic properties
Photochromism of dihydroindolizines. Part 12: synthesis and photochromism of novel π-conjugated rigid dihydroindolizines as potential molecular electronic devices
作者:Saleh Abdel-Mgeed Ahmed
DOI:10.1016/j.tet.2008.12.047
日期:2009.2
Novel carbon-rich photochromic dihydroindolizine DHI derivatives and new spirocyclopropenes have been synthesized. Three alternative synthetic pathways for the synthesis of DHI 10 have been established. Different Sonogashira-mediated coupling reactions have been applied to optimize the reaction conditions and to obtain the best yields. Palladium-mediated Sonogashira coupling of DHIs with 4-(thioacetyl)iodobenzene