Dr. Ted Lorance
Edward D. Lorance, PhD. (VU ’95) is Professor of Chemistry at Vanguard University of Southern California. Dr. Lorance completed his undergraduate education at Vanguard University (then Southern California College) in Costa Mesa, California in chemistry and mathematics before earning his Ph. D. at the University of Arizona in Tucson, AZ (2005); the title of his dissertation was “Synthetic and Computational Studies on Organosulfur Radical Cations and α-Metalated Sulfides” and involved both theoretical and experimental work with radical cations and carbanions. He then completed a two-year postdoctoral fellowship at Arizona State University which involved theory and laser flash photolysis of very fast bond fragmentation reactions. His current research involves the elucidation of reaction mechanisms of radical ion species, excited states, and especially high-temperature, high-pressure aqueous reactions.
In addition to regularly scheduled class and laboratory times, he is available on campus during office hourse (which vary by semester). If questions arise at other times, you may contact him via email or by telephone to make other arrangements by appointment.
Office: Bldg.16; Rm. 109
Phone: (714) 619-6467 (x6467)
2016 SURP Research Projects:
- Hydrothermal Reactions of Esters and Nitriles. In a continuing collaboration with researchers at Arizona State University, the rate of hydrolysis of aromatic organic esters in high-temperature, high-pressure water will continue to be investigated to further our understanding of hydrothermal reactions in terrestrial and extraterrestrial environments. As part of the same over-arching project, we will also continue our investigation of the high-temperature, high-pressure hydrolysis of aromatic nitriles. In conjunction with reactions postulated to be involved in the formose reaction (vide infra), this process could be involved in the abiotic production of amides and oligopeptides in extraterrestrial environments. This is part of an ongoing investigation into the increased activity of hydronium ion in water at 150°-350°C.
- Investigation of a Proposed Initial Step of the Formose Reaction. First discovered in 1861, the formose reaction is a cascade of processes by which formaldehyde is converted into monosaccharides of various sizes. It has been investigated by many chemists over the decades and is mostly understood except that the initial reaction to form glycolaldehyde is unknown. The formose reaction is of great interest due to the likelihood of it being responsible for the formation of saccharides in aqueous astrochemical environments (e.g., comets, Europa, Enceladus, Ceres, etc.). A proposed mechanism for the cyanide-catalyzed condensation will be investigated from both a kinetic perspective and the perspective of identifying early-time reaction products. The mechanism will also be tested by making traditional catalytic substitutions for cyanide.
- Mechanistic Investigation of Zinc Didebromination. Although the conversion of vicinal dibromides to alkenes has been a standard organic synthetic transformation for well over 80 years, the mechanism has not been unequivocally determined. To investigate the potential mechanisms, we will determine the rates of didebromination for variously-substituted 1,2-dibromo-1-phenylethanes and apply Hammett analysis to gain information about the electronics of the transition state. Some of the 1,2-dibromo-1-phenylethanes are not commercially available and will have to be synthesized.
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