Two-Photon Absorption Properties of Alkynyl-Conjugated Pyrene Derivatives
作者:Hwan Myung Kim、Yeon Ok Lee、Chang Su Lim、Jong Seung Kim、Bong Rae Cho
DOI:10.1021/jo800363v
日期:2008.7.1
N-dimethylamino)phenylethynyl groups as the substituent (1−5) have been synthesized and their two-photonabsorption properties were investigated. Comparison of two-photon cross section (δmax) with related compounds reveals that pyrene is as efficient a π-center as anthracene in two-photon materials. Moreover, the two-photon cross section (δmax) increased with the number of substituents reaching at the maximum value
Click-Reagent Version of Sonogashira Coupling Protocol to Conjugated Fluorescent Alkynes with No or Reduced Homocoupling
作者:Subhendu Sekhar Bag、Rajen Kundu、Manas Das
DOI:10.1021/jo200005n
日期:2011.4.1
A click-reagent version of the Sonogashira-coupling protocol has been developed. Diarylalkynes with donor and/or acceptor substituents have been synthesized via this protocol at moderate to excellent yields and with no or drastically reduced quantities of undesired homocoupled side products. This protocol is green-solvent compatible, air-insensitive, and effective under microwave conditions.