Starting from commercially available educts, a straightforward synthetic route to new heterocyclic building blocks is exemplified with the one- or two-step synthesis of tri-, tetra-, or pentacyclic ring systems. Representatives of the following novel ring systems are prepared from 3-methyl-1-phenyl-2-pyrazolin-5-one and the corresponding o-halo-arenecarbonyl chloride using calcium hydroxide in ...

The synthesis and characterization of bis(difluoroboryl)-1,2-bis((1H-pyrrol-2-yl)methylene)hydrazone functionalized with two lateral vinyl-thienyl modules and exhibiting strong absorption in the 400-800 nm window in thin films are reported. Bulk heterojunction solar cells assembled with these dyes and a fullerene derivative (PC71BM), using very small quantities of the additive diiodooctane, giv...

Abstract Fluorescent probes are valuable tools to visualize non‐catalytic proteins in live cells. Currently, the majority of imaging reagents for based on “always‐on” fluorophores and use these usually necessitate a wash step remove unbounded before microscope imaging. Herein, we report arylamino‐substituted rhodamine as an activatable fluorophore protein We have shown induction arylamino struc...

C(72)-Macrocyclic systems functionalized with nitroaryl and arylamino groups were synthesized from the bisdioxine diacid dichloride 1,3,5,7-tetra-tert-butyl-2,6,9-trioxabicyclo[3.3.1]nona-3,7-diene-4,8-dicarbonyl dichloride (3).

The asymmetric unit of the title compound, C12H15NO, comprises two sym-metry-independent mol-ecules which differ mainly in the conformations of the tert-butyl groups. The mol-ecules contain an essentially planar five-membered 3-pyrroline ring incorporating a carbonyl substituent (pyrrolinone) which forms part of an isoindolinone skeleton. The planarity of the pyrrole ring is compared to other s...