Associate Professor, Ph.D. Office: Turner Hall, room 327 Phone: 757-727-5330 Email: charles.bump@hamptonu.edu

Dr. Bump teaches the General Organic Chemistry (CHE 301-302) sequence of courses.

The reaction of pyrrole with p-substituted benzaldehydes in refluxing acetic or propionic acid gives p-substituted meso-tetraphenylporphyrins if the substituent is electron withdrawing. Porphyrin yields are negligibly small for benzaldehydes with electron donating substituents (Electronic Effects in the Synthesis of Tetraphenylporphyrins, Christopher J. Soares, M.S. Dissertation, Hampton University, 1985)

The challenge is to prepare tetraphenylporphyrins with electron donating substituents in the p position. The general strategy is to synthesize tetraphenylporphyrins using the electron withdrawing influence of the p-nitro group on benzaldehyde, reduce the nitro group to an amine, form a diazonium salt from the amine, and replace the diazonium salt with a nucleophile that makes the phenyl rings electron rich.

Dr. Bump enjoys writing computer simulations of laboratory experiments and chemical reactions. He has developed hypercard simulations of quantitative analysis labs and organic chemistry reactions. Current work involves an examination of S_N1 and S_N2 reaction mechanisms of alkyl halides.