Crystal structure of 8-tosyloxyquinoline.

as a synthetic precursor of arylsulfonyl 8-hydroxyquinoline derivatives. It is also a key-intermediate for the synthesis of quinolinol metal compounds,2 which were sought for development as potential electroluminescence devices, or novel oxine and its derivatives3 as antibacterial and antifungal agents. During the course of our investigation concerning the synthesis of novel thiaoxa-donor podands having quinoline endgroups, the title compound was prepared from the reaction of 8hydroxyquinoline with tosyl chloride in triethylamine at 0 ̊C. The reaction mixture was filtered and the solid was washed with distilled water. After the solid had dissolved in chloroform, excess diethyl ether was added to obtain the pure product as a colorless precipitate (yield, 85%). Single crystals suitable for X-ray crystallography were prepared by slow evaporation from an ethanol solution at room temperature. The crystal and experimental data are given in Table 1. The structure was solved by direct methods and refined with anisotropic temperature factors for non-hydrogen atoms. All hydrogen atoms were located from difference Fourier maps and were not refined. The atomic coordinates for non-hydrogen 805 ANALYTICAL SCIENCES JUNE 2001, VOL. 17 2001 © The Japan Society for Analytical Chemistry