10-CHLORO-9-ANTHRALDEHYDE

10-Chloro-9-anthraldehyde was used in the preparation of trans-1-(10-methyl-9-anthryl)-2-(4-pyridyl)-ethene, 1-(10-chloro-9-anthryl)-2-(4-pyridyl)-ethene, 1-(10-methyl-9-anthryl)-2-(4-(N-methyl)-pyridinium)ethene iodide and 1-(10-chloro-9-anthryl)-2-(4-(N-methyl)pyridinium)ethene iodide.

The aldehyde crystallises as yellow needles from EtOH, AcOH or toluene. [Beilstein 7 III 2529.]