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元素有机化学国家重点实验室

Upcoming events

Upcoming events

【Lecture】—2-Azaallyl Anions and Sulfenate Anions:Unusual and Unexpected Reactivity

Release unit:SKLEOC   Release time:2018/01/03    Browse times:41


Topic: 2-Azaallyl Anions and Sulfenate Anions: Unusual and Unexpected Reactivity

Spearker: Prof.Patrick J. Walsh (University of Pennsylvania)
 


Alan MacDiarmid Professor of Chemistry (2008-to present)

Professor of Chemistry, University of Pennsylvania (2005-present)

Associate Professor of Chemistry, University of Pennsylvania (2002-2005)

Assistant Professor of Chemistry, University of Pennsylvania (1999-2002)

Assistant Professor of Chemistry, San Diego State University (1994-1999)

1991-1994 NSF Postdoc., Scripps Research Institute (BarrySharpless)

1991 Ph.D. in Chemistry University of California, Berkeley (R. G. Bergman


ABSTRACT: The umpolung synthesis of diarylmethylamines via palladium-catalyzed arylation of 2-azaallyl anion intermediates and related reactions will be presented. Next, the observation  that 2-azaallyl anions can behave as organic super-electron-donors (SED) will be introduced. Such unique behavior is illustrated in (i) generation of 2-azaallyl radicals from single-electron-transfer (SET) between 2-azaallyl anions and neutral ketimines, which then couple with vinyl bromides; (ii) generation of 2-azaallyl radicals from SET of 2-azaallyl anions with aryl and alkyl electrophiles, which generate aryl and alkyl radicals leading to formation of C–C bonds. Finally, some novel organocatalysts will be described.   

 

Date: 5th Jan. 2018 (Friday)  

Time:  16:00 p.m. 
Venue: Academic Lecture Hall of the Shixian Building, NKU