Bruce A. Hathaway*, Brian E. Taylor, and Jeremy S. Wittenbom ... Department of Chemistry, MS 6400, Southeast Missouri State University, One University Plaza, Cape Girardeau, MO, 63701. ... Abstract: By use of appropriate reactions and sequence of steps, 2,5- dimethoxybenzaldehyde can be converted either to 4-(bromo or iodo)-2,5- dimethoxybenzonitrile or 2-(bromo or iodo)-3,6-dimethoxybenzonitrile. ... In the course of other work, we needed to prepare ...