The object of the present invention is to provide a multifunction ignition device integrated with a spark plug for conserving space by integrating a spark plug, ignition coil, and fuel injection device in a single enclosure and for making a high fuel efficiency engine design possible and allowing spark plug electrode replacement, thereby reducing waste during plug maintenance. The decorative fragrance diffuser may be comprised of a base and a light source mounted to the base. The invention also relates to methods of preparing the compounds of formula 1.