Regioselective Syntheses of 2,3,4-Tribromopyrrole and 2,3,5-Tribromopyrrole
作者:Ejae A. John、Pamela Pollet、Leslie Gelbaum、Julia Kubanek
DOI:10.1021/np0498399
日期:2004.11.1
2,3,4-Tribromopyrrole (1) and 2,3,5-tribromopyrrole (2) were each synthesized from pyrrole. Spectral data and antifeedant effects for synthetic 1 and the antipredatory chemical defense compound of the marine hemichordate Saccoglossus kowalevskii were in agreement, confirming the structure of the deterrent natural product as 1. Spectral data for 2 differed from synthetic and natural 1.
Red-emissive Polyphenylated BODIPY Derivatives: Effect of Peripheral Phenyl Groups on the Photophysical and Electrochemical Properties
A series of red-emissive BODIPY derivatives 2–4 having five to seven phenyl groups on their periphery were synthesized, and their photophysical and electrochemical properties were investigated. While the 8-phenyl-substituted derivatives only have moderate fluorescence quantum yields in solution, they can show intense red fluorescence in the PMMA films. The peripheral phenyl groups also affect the redox reversibility in cyclic voltammetry.