Synthesis and Optical Properties of Polyaryl 2‐(Pyridin‐2‐yl)
<scp>phenol‐Based Four‐Coordinate</scp>
Organoboron Complexes
作者:Xiang Liu、Jinlei Zhou、Huitao Zheng、Jiali Liu、Zhihao Liu、Linying Ni、Xiangxi Kong、Chen Zhang、Hua Cao
DOI:10.1002/cjoc.202200810
日期:2023.4.15
polyaryl 2-(pyridin-2-yl)phenol-based four-coordinate organoboron complexes were prepared in good yields via deconstructive cycloaromatization of indolizines, cyclopropenones, and boric acids. The photoluminescence measurements have revealed that these N,O π-conjugated tetracoordinateboroncomplexes display bright fluorescence, large Stokes shifts, and good quantum yields (Φlum = 0.15—0.45). In addition,
作者:Charles F. Barfknecht、Clinton A. Taylor、Lawrence A. Peterson、Fouad M. Sharabi、John P. Long
DOI:10.1021/jm00245a028
日期:1975.11
A series of "nonclassical" nicotine antagonists was synthesized and compared to the "classical" nicotine antagonist, hexamethonium, by means of the isolated guinea pig atria preparation. 2 was found to be the most potent, followed by hexamethonium and the other antagonists. With the exception of 5, the bisquaternary compounds 1-3 and 7-9 were found to be more potent than the monoquaternary compounds 4, 6, and 10-12. Within a series of compounds (1-6 or 7-12), those compounds possessing two phenyl rings proved to be more potent than those possessing one or three phenyl rings. These and other aspects of the structure-activity relationship of this class of compounds are discussed.