Inorganic Chemistry Seminar (Stosh Kozimor, Los Alamos National Laboratory) CANCELED

Tue, 2017-04-18 12:00 - 13:00
Location: 

Lynch Lecture Hall Chemistry Complex

Seminar has been canceled . Reschedule date TBA

Organic Chemistry Seminar (Mark Gandelman, Technion, Israel)

Mon, 2017-04-17 12:00 - 13:00
Speaker: 
"The lecture will consist of two parts. The first part will focus on chemistry of cationic nitrogen" "compounds. We will demonstrate that nitrenium cations, which are isostructural and isoelectronic to ubiquitous N-heterocyclic carbenes, can serve as ligands for a wide range of transition metals.1 It represents a missing link in the coordination behavior of carbenes and other main group carbene-like species. The chemistry of these systems and its relevance to catalysis will be discussed. Formation of a stable bond between the positively charged nitrenium ligands and cationic metal centers, providing an extremely rare example of cation-cation binding, will be also presented and discussed.2 In addition, we will disclose a first X-ray supported example of Lewis acids centered on nitrogen atom." "In a second part of the lecture, new efficient methods and reagents to the preparation of iodo-," "chloro-, bromo- and fluoroorganic compounds, as well as straightforward approach to the preparation of geminal dihaloalkanes, will be presented. We will demonstrate that the geminal dihaloalkanes have a great potential for facile functionalization to produce valuable complex organic compounds. Specifically, two new efficient catalytic methods utilizing geminal dihaloalkanes will be presented: (a) stereoconvergent enantioselective synthesis of tailor-made organic fluorides, which are difficult to prepare by other synthetic methods,3 and (b) enantio- and chemoselective assembly of tertiary" "stereocenters from the carboxylic acids just in few steps.4
Location: 

Lynch Lecture Hall Chemistry Complex

Attached Document: 

Inquires please contact Rosa Vargas at rvargas@sas.upenn.edu

Organic Chemistry Seminar (Paul Floreancig, University of Pittsburgh)

Mon, 2017-04-10 12:00 - 13:00
Speaker: 
"Natural Product Synthesis as an Entry to New Method Development and Biological Studies" The rigor of natural product synthesis continues to inspire new method development and to deliver compounds that provide insights into biological activity. This seminar will detail three studies that support this statement. Specifically, the talk will focus on 1) the extension of an approach to allylic alcohol transposition reaction to an efficient synthesis of the spliceosome inhibitor herboxidiene and an analog that provides insight into the biologically relevant conformation, 2) the advancement of unimolecular reactions that proceed through oxidative C–H functionalization to a bimolecular process for spiroacetal synthesis leading to the synthesis of the actin-binding cytotoxin bistramide A, and 3) the path from designing a multicomponent protocol for the synthesis of pederin and psymberin to understanding the structure-activity relationships of these compounds and a move into oxidative cargo release.
Location: 

Lynch Lecture Hall Chemistry Complex

Attached Document: 

Inquires please contact Rosa Vargas rvargas@sas.upenn.edu

Inorganic Chemistry Seminar (Kyle Lancaster, Cornell University)

Tue, 2017-02-28 12:00 - 13:00
Location: 

Lynch Lecture Hall Chemistry Complex

Inquires please contact Camille Pride at campride@sas.upenn.edu

Organic Chemistry Seminar (Qiu Wang, Duke University)

Mon, 2017-02-27 12:00 - 13:00
Location: 

Lynch Lecture Hall Chemistry Complex

Inquires please contact Camille Pride at campride@sas.upenn.edu

Inorganic Chemistry Seminar (Thomas Albrecht-Schmitt, Florida State University)

Tue, 2017-01-24 12:00 - 13:00
Location: 

Lynch Lecture Hall Chemistry Complex

Inquires please contact Camille Pride at campride@sas.upenn.edu

Organic Chemistry Seminar (Joshua Pierce, North Carolina State University)

Mon, 2017-03-20 12:00 - 13:00
Location: 

Lynch Lecture Hall Chemistry Complex

Inquires please contact Camille Pride at campride@sas.upenn.edu

Organic Chemistry Seminar (Daniela Buccella, New York University)

Mon, 2016-11-07 12:00 - 13:00
Location: 

Lynch Lecture Hall Chemistry Complex

Inquires please contact Camille Pride at campride@sas.upenn.edu

Inorganic Chemistry Seminar (Alex Miller, University of North Carolina, Chapel Hill)

Tue, 2016-10-04 12:00 - 13:00
Location: 

Lynch Lecture Hall Chemistry Complex

Inquires please contact Camille Pride at campride@sas.upenn.edu

Inorganic Chemistry Seminar (Jillian Dempsey, University of North Carolina)

Tue, 2016-09-20 12:00 - 13:00
Location: 

Lynch Lecture Hall Chemistry Complex

Inquires please contact Camille Pride at campride@sas.upenn.edu

Department of Chemistry

231 S. 34 Street, Philadelphia, PA 19104-6323

215.898.8317 voice | 215.573.2112 fax | web@chem.upenn.edu

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