Total Synthesis of the Herqulines The herquline family of natural products were originally isolated from penicillium herquei in 1979 by the Ōmura group (see figure below). These strained macrocyclic alkaloids all contain multiple stereocenters, and an unsymmetrically substituted piperazine. Herqulines B and C feature two β,γ-unsaturated cyclohexenones, while herquline A bears an additional pyrrolidine. Type of Event: Organic Seminar Read more about Total Synthesis of the Herqulines
Metal–Hydrogen Atom Transfer (MHAT)-Initiated Intramolecular Giese Reactions in Total Synthesis The use of metal–hydrogen atom transfer (MHAT) for olefin hydrofunctionalization has received great attention over the last 20 years, primarily due to its enhanced chemoselectivity and regioselectivity.[1] The Giese reaction, or the addition of a carbon-centered radical into an electron-deficient alkene, is well-known and has been commonly employed for C–C bond formation over the last 40 years.[2] More recently, the Baran group coupled these two methodologies to establish a powerful tool for the reductive cross-coupling of Type of Event: Organic Seminar Read more about Metal–Hydrogen Atom Transfer (MHAT)-Initiated Intramolecular Giese Reactions in Total Synthesis
Characterizing Surface Active Organics in Sea Spray Aerosol and Their Influence on Cloud Microphysics Oceans produce one of the largest global natural sources of aerosol in the form of sea spray aerosol (SSA) particles which therefore play a large role in global climate dynamics. SSA particles are enriched in ocean-derived organic compounds, specifically surfactants, which influence the chemical properties of SSA and the potential for SSA particles to become cloud seeds. Type of Event: Analytical Seminar Read more about Characterizing Surface Active Organics in Sea Spray Aerosol and Their Influence on Cloud Microphysics
Spectroscopy and Imaging at the Nanoscale in the Range Visible to Terahertz Frequencies Type of Event: Departmental Colloquium Read more about Spectroscopy and Imaging at the Nanoscale in the Range Visible to Terahertz Frequencies
Eileen Kennedy Position: Adjunct and Courtesy Faculty Personal Website: Website Read more about Eileen Kennedy
Sampling, Ambient Mass Spectrometry, and the Philosophy of Damage in a Museum Setting With some 150 million objects (including living specimens) in its collection that have been selected for conservation and are available for study, the interests of the Smithsonian Institution fill every niche. Though material analysis is needed to support all manner of research, it may be more important to the museum and other interested parties that rare, precious, or culturally sensitive objects remain un-damaged. Mass spectrometry in its various forms presents a powerful tool, but it is inescapably destructive at some level. Type of Event: Analytical Seminar Read more about Sampling, Ambient Mass Spectrometry, and the Philosophy of Damage in a Museum Setting
Computation of Magnetic Properties Type of Event: Departmental Colloquium CCC Seminar Read more about Computation of Magnetic Properties
Use of Permethylation for Structural Characterization of Glycoconjugates Type of Event: Departmental Colloquium Read more about Use of Permethylation for Structural Characterization of Glycoconjugates
Polymeric Biointerfaces for Tailored Interactions with Cells Type of Event: Materials Chemistry and Nanoscience Seminar Read more about Polymeric Biointerfaces for Tailored Interactions with Cells