|Speaker||Prof. Seung Hwan Cho|
|Date||Thu. 18 May. 2017|
|Venue||#633, Asan Hall, College of Science|
“1,1-Bisborylalkane: New Class of Organoboron Compound
for the Chemo, Regio and Stereoselective Organic Transformations”
1,1-Organodimetallic reagents are valuable starting materials for the construction of multifunctionalized molecules. Among them, 1,1-diborylalkanes, which contain two boryl groups at the same carbon center, are particularly attractive due to their ease of handling, non-toxicity, stability, and propensity to undergo a variety of organic transformations. In this context, our lab is highly interested in the development of regio, chemo and stereoselective organic reactions using 1,1-diborylalkanes as new types of organodimetallic reagents.
In this seminar, the details about our recent findings using 1,1-diborylalkanes in a range of organic transformations will be presented including 1) copper-catalyzed SN2’-selective allylic substitution reactions of allylic chlorides with1,1-diborylalkanes 2)the chemo- and diastereoselective alkylation ofN-tert-butanesulfinyl aldimines. 3) an unprecedented transition-metal-free deborylative alkylation of pyridine N-oxides using 1,1-diboryl-alkanes as alkyl sources and 4) an unusual chemoselective coupling of 1,1-diborylalkanes for the transition-metal-free borylation of aryl and vinyl halides.
Kim, J.; Park, S.; Park, J.; Cho, S. H.* Angew. Chem., Int. Ed. 2016, 55, 1498.
Park, J.; Lee, Y. Kim, J. Cho, S. H.* Org. Lett. 2016, 18, 1210.
Cho, W.; Kim, J.; Choi, S. Cho, S. H.* Angew. Chem., Int. Ed. 2016, 55, 9690
Kim, J.; Cho, S. H.* Synlett, 2016, 27, 2525. (Invited contribution of Synpact article)
Lee, Y.; Baek, S.; Park, J.; Kim, S. T.; Tussupbayev, S.; Kim, J.; Baik, M. Cho, S. H J. Am. Chem. Soc.2017, 139, 976.
Prof. Seung Hwan Cho
Department of Chemistry, POSTECH, Pohang, Republic of Korea
|Notice||Spring semester 2017 Seminar Schedule||-||-|
|33||[Wed. 5 July. 2017] Seminar was canceled!||-||-|
|32||[Wed. 28 Dec. 2016] Prof. James Y. Hamilton/Development of a Broad Range of Asymmetric C–C Bond Forming Reactions with a Versatile Iridium Catalyst||Prof. James Y. Hamilton||Wednesday 28 December 2016|
|31||[Thu. 9 Mar. 2017] Prof. Woon Ju Song/Department of Chemistry, Seoul National University, Seoul, Korea||Prof. Woon Ju Song||Thu. 9 Mar. 2017|
|30||[Thu. 9 Jun. 2016] Prof. Yong-Young Noh/Development of Printed Large Area Organic Transistors and Integrated Circuits||Prof. Yong-Young Noh||Thursday 9 June 2016|
|29||[Thu. 8 Sep. 2016] Prof. Jaeyoung Sung/Stochastic chemical dynamics in living cells and its consequence for the control capacity of living cells over biological functions||Prof. Jaeyoung Sung||Thursday 8 September 2016|
|28||[Thu. 8 Jun. 2017] Prof. Won-jin Chung/Department of Chemistry, GIST, Gwangju, Republic of Korea||Prof. Won-jin Chung||Thu. 8 Jun. 2017|
|27||[Thu. 6 Oct. 2016] Prof. Young S. Park/Atomistic Molecular Engineering of Polycyclic Aromatic Hydrocarbons||Prof. Young S. Park||Thursday 6 October 2016|
|26||[Thu. 6 Apr. 2017] Prof. Rong-Jie Chein/Institute of Chemistry, Academia Sinica, Nankang, Taipei, Taiwan||Prof. Rong-Jie Chein||Thu. 6 Apr. 2017|
|25||[Thu. 30 Mar. 2017] Prof. Jeong Ho Cho/SKKU Advanced Institute of Nanotechnology (SAINT), School of Chemical Engineering, Sungkyunkwan University, Suwon, Korea||Prof. Jeong Ho Cho||Thu. 30 Mar. 2017|
|24||[Thu. 3 Nov. 2016] Prof. Min-Sik Kim/Mass spectrometry and its applications to Biological Discovery||Prof. Min-Sik Kim||Thursday 3 November 2016|
|23||[Thu. 29 Sep. 2016] Prof. Tae-Young Yoon/Observation of Single Membrane Proteins under Mechanical Tension||Prof. Tae-Young Yoon||Thursday 29 September 2016|
|22||[Thu. 27 Apr. 2017] Seminar was canceled!||-||-|
|21||[Thu. 26 Jun. 2016] Prof. Sung June Cho/Structural Elucidation of Novel Zeolite by Dual Space Approaches Using X-ray Powder Diffraction||Prof. Sung June Cho||Thursday 26 May 2016|
|20||[Thu. 25 May. 2017] Prof. Wonsuk Kim/Department of Chemistry and Nano Science, Ewha Womans University, Seoul||Prof. Wonsuk Kim||Thu. 25 May. 2017|
|19||[Thu. 23 Mar. 2017] Prof. Sangsu Bae/Department of Chemistry, Hanyang University, Seoul, South Korea||Prof. Sangsu Bae||Thu. 23 Mar. 2017|
|18||[Thu. 22 Sep. 2016] Prof. Anna Lee/Organocatalyzed Asymmetric Reactions||Prof. Anna Lee||Thursday 22 September 2016|
|17||[Thu. 20 Oct. 2016] Prof. Chan Hyuk Kim/Novel Small Molecule-based Approaches for Cancer Immunotherapy||Prof. Chan Hyuk Kim||Thursday 20 October 2016|
|16||[Thu. 2 Jun. 2016] Prof. Sunkyu Han/Total Syntheses of Complex Alkaloids Inspired by Biosynthetic Hypotheses||Prof. Sunkyu Han||Thursday 2 June 2016|
|15||[Thu. 19 May. 2016] Prof. Zhuang Liu/Nanotechnology for enhanced cancer radiation therapy and immunotherapy||Prof. Zhuang Liu||Thursday 19 May 2016|
|»||[Thu. 18 May. 2017] Student Host Colloquium : 1,1-Bisborylalkane: New Class of Organoboron Compound for the Chemo, Regio and Stereoselective Organic Transformations||Prof. Seung Hwan Cho||Thu. 18 May. 2017|
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