Sukbok Chang Explained

Sukbok Chang
Native Name:장석복
Native Name Lang:Korean
Birth Date:1 August 1962
Workplaces:Caltech, Ewha Womans University, KAIST, Institute for Basic Science
Alma Mater:Korea University, KAIST, Harvard University
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Awards:Top Scientist and Technologist Award of Korea (2019), Highly Cited Researcher (2015-2019), Korea Science Award (2013)
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Hangul:장석복
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Rr:Jang Seokbok
Mr:Chang Sŏkpok
Child:yes

Sukbok Chang (; born August 1, 1962) is a South Korean organic chemist. He is a distinguished professor in the Department of Chemistry at Korea Advanced Institute of Science and Technology (KAIST). He is also the director of the Institute for Basic Science (IBS) Center for Catalytic Hydrocarbon Functionalizations (CCHF). He was an associate editor on ACS Catalysis and has served on the editorial advisory boards of The Journal of Organic Chemistry, Journal of the American Chemical Society, and Accounts of Chemical Research. His major research interest is transition metal catalyzed C-H bond functionalization for the carbon-carbon bond and carbon-heteroatom bond formation.

Career

Sukbok Chang received his B.S degree from Korea University in 1985, and M.S degree from KAIST in 1987. Then, he joined Eric N. Jacobsen's group and received his PhD in 1996 at Harvard University. He subsequently worked with Robert H. Grubbs at Caltech as a postdoctoral fellow from 1996 to 1998. In early 1998, he joined the faculty of Ewha Womans University as an assistant professor, and moved to KAIST as a full professor in 2002. In 2012, he was selected as a director of the Center for Catalytic Hydrocarbon Functionalizations at the Institute for Basic Science, which is the biggest Korean government funded research institute. He also has been working as an associate editor of the journal ACS Catalysis since 2015. In 2023, he was selected to co-run the KAIST Cross Generation Creation Lab, a laboratory designed to continue the know-how of professors about to retire through collaboration with younger professors.[2] [3] [4]

Major contributions

Chang's group studies new organic reactions and mechanisms with transition metal catalysis.[5] In particular, his group contributed to the development of "copper catalyzed multicomponent coupling" in the 2000s. Since 2008, his group has focused on C-H functionalization and made a number of contributions.[6]

Copper-catalyzed multicomponent coupling

Cu-catalyzed multicomponent coupling is a notable process developed by Chang's group. In 2005, they published a highly efficient and mild catalytic three component coupling between an alkyne, sulfonyl azide, and amine.[7] Unlike click chemistry which generates 1,4-triazoles as products, in this case a Cu(I) catalyst, sulfonyl azide and alkyne generate ketenimine intermediate after releasing N2 gas. This electrophilic ketenimine intermediate reacts with amines and to generate asymmetric imines as products. Chang's group also showed water,[8] alcohols,[9] the C3 position of pyrrole[10] and other nucleophiles can be used in this reaction.

Rhodium, Iridium-catalyzed C-N bond formation

Rhodium or iridium catalyzed C-H amidation and amination are other achievements of his group. In 2012, his group published rhodium catalyzed intermolecular amidation of arenes using sulfonyl azide as a nitrene precursor.[11] This reaction generates N2 as the single byproduct, doesn't need external oxidant, has broad substrate scope and high functional group tolerance. Chang's group advanced their work by using different directing groups,[12] different azides[13] and various substrates.[14] They also published that iridium also works well for C-H amidation/amination.[15] [16] [17]

In 2016, Chang's group discovered new nitrogen sources.[18] Their new nitrene precursor, 1,4,2-dioxazol-5-one, is more convenient to prepare, store and use compared to azides. Moreover, it has a strong affinity to the rhodium or Iridium metal center, and thus gives excellent amidation efficiency.[19] They later published selective formation of gamma-lactams via C-H amidation[20] [21] with this type of nucleophile.

Honors and awards

Notes and References

  1. Web site: 회원: 장석복 (張碩福) . . Korean Academy of Science and Technology . 6 March 2020 . Korean.
  2. Web site: "학문의 대 잇는다"…KAIST '초세대 협업연구실' 추가 개소 . 노현섭 . 11 January 2023 . 서울경제 . 11 January 2023 . Korean.
  3. Web site: KAIST, 초세대 협업연구실 2곳 추가 개소 . 여용준 . 11 January 2023 . 글로벌이코노믹 . 11 January 2023 . Korean.
  4. Web site: 카이스트 김정호·장석복 교수팀, 학문의 대를 잇는 '초세대 협업연구실' 추가 개소 . 한성형 . 11 January 2023 . Korea Lecturer News . 11 January 2023 . Korean.
  5. Web site: Sukbok Chang's group website.
  6. Cho. Seung Hwan. Hwang. Seung Jun. Chang. Sukbok. July 2008. Palladium-Catalyzed C−H Functionalization of PyridineN-Oxides: Highly Selective Alkenylation and Direct Arylation with Unactivated Arenes. Journal of the American Chemical Society. 130. 29. 9254–9256. 10.1021/ja8026295. 18582040. 0002-7863.
  7. Bae. Imhyuck. Han. Hoon. Chang. Sukbok. February 2005. Highly Efficient One-Pot Synthesis ofN-Sulfonylamidines by Cu-Catalyzed Three-Component Coupling of Sulfonyl Azide, Alkyne, and Amine. Journal of the American Chemical Society. 127. 7. 2038–2039. 10.1021/ja0432968. 15713069. 0002-7863.
  8. Cho. Seung Hwan. Yoo. Eun Jeong. Bae. Imhyuck. Chang. Sukbok. November 2005. Copper-Catalyzed Hydrative Amide Synthesis with Terminal Alkyne, Sulfonyl Azide, and Water. Journal of the American Chemical Society. 127. 46. 16046–16047. 10.1021/ja056399e. 16287290. 0002-7863.
  9. Yoo. Eun Jeong. Ahlquist. Mårten. Bae. Imhyuck. Sharpless. K. Barry. Fokin. Valery V.. Chang. Sukbok. July 2008. Mechanistic Studies on the Cu-Catalyzed Three-Component Reactions of Sulfonyl Azides, 1-Alkynes and Amines, Alcohols, or Water: Dichotomy via a Common Pathway. The Journal of Organic Chemistry. 73. 14. 5520–5528. 10.1021/jo800733p. 18557650. 0022-3263.
  10. Cho. Seung Hwan. Chang. Sukbok. 2008-03-31. Room Temperature Copper-Catalyzed 2-Functionalization of Pyrrole Rings by a Three-Component Coupling Reaction. Angewandte Chemie International Edition. 47. 15. 2836–2839. 10.1002/anie.200705940. 18318034. 1433-7851.
  11. Kim. Ji Young. Park. Sae Hume. Ryu. Jaeyune. Cho. Seung Hwan. Kim. Seok Hwan. Chang. Sukbok. 2012-05-24. Rhodium-Catalyzed Intermolecular Amidation of Arenes with Sulfonyl Azides via Chelation-Assisted C–H Bond Activation. Journal of the American Chemical Society. 134. 22. 9110–9113. 10.1021/ja303527m. 22624801. 0002-7863.
  12. 2012-09-19. Graphical Abstract: Angew. Chem. Int. Ed. 39/2012. Angewandte Chemie International Edition. 51. 39. 9709–9721. 10.1002/anie.201290068. 1433-7851. 2027.42/137365. free.
  13. Shin. Kwangmin. Baek. Yunjung. Chang. Sukbok. 2013-06-20. Direct CH Amination of Arenes with Alkyl Azides under Rhodium Catalysis. Angewandte Chemie International Edition. 52. 31. 8031–8036. 10.1002/anie.201302784. 23788328. 1433-7851.
  14. 2014. Rhodium-Catalyzed Direct Amination of Arene C-H Bonds Using Azides as the Nitrogen Source. Organic Syntheses. 91. 52. 10.15227/orgsyn.091.0052. 0078-6209. free.
  15. Lee. Donggun. Kim. Youngchan. Chang. Sukbok. 2013-10-10. Iridium-Catalyzed Direct Arene C–H Bond Amidation with Sulfonyl- and Aryl Azides. The Journal of Organic Chemistry. 78. 21. 11102–11109. 10.1021/jo4019683. 24079849. 0022-3263.
  16. Kim. Jinwoo. Chang. Sukbok. 2014-01-27. Iridium-Catalyzed Direct CH Amidation with Weakly Coordinating Carbonyl Directing Groups under Mild Conditions. Angewandte Chemie International Edition. 53. 8. 2203–2207. 10.1002/anie.201310544. 24470125. 1433-7851.
  17. Kang. Taek. Kim. Youngchan. Lee. Donggun. Wang. Zhen. Chang. Sukbok. 2014-03-05. Iridium-Catalyzed Intermolecular Amidation of sp3 C–H Bonds: Late-Stage Functionalization of an Unactivated Methyl Group. Journal of the American Chemical Society. 136. 11. 4141–4144. 10.1021/ja501014b. 24580093. 0002-7863.
  18. Park. Yoonsu. Park. Kyung Tae. Kim. Jeung Gon. Chang. Sukbok. 2015-03-30. Mechanistic Studies on the Rh(III)-Mediated Amido Transfer Process Leading to Robust C–H Amination with a New Type of Amidating Reagent. Journal of the American Chemical Society. 137. 13. 4534–4542. 10.1021/jacs.5b01324. 25789561. 0002-7863.
  19. Park. Yoonsu. Heo. Joon. Baik. Mu-Hyun. Chang. Sukbok. 2016-10-13. Why is the Ir(III)-Mediated Amido Transfer Much Faster Than the Rh(III)-Mediated Reaction? A Combined Experimental and Computational Study. Journal of the American Chemical Society. 138. 42. 14020–14029. 10.1021/jacs.6b08211. 27690406. 0002-7863.
  20. Hong. Seung Youn. Park. Yoonsu. Hwang. Yeongyu. Kim. Yeong Bum. Baik. Mu-Hyun. Chang. Sukbok. 2018-03-01. Selective formation of γ-lactams via C–H amidation enabled by tailored iridium catalysts. Science. 359. 6379. 1016–1021. 10.1126/science.aap7503. 29496875. 2018Sci...359.1016H . 0036-8075. free.
  21. Park. Yoonsu. Chang. Sukbok. 2019-02-18. Asymmetric formation of γ-lactams via C–H amidation enabled by chiral hydrogen-bond-donor catalysts. Nature Catalysis. 2. 3. 219–227. 10.1038/s41929-019-0230-x. 104461199. 2520-1158.
  22. Web site: The Asian Scientist 100 . . 3 April 2024.
  23. Web site: 32회 삼성호암상…오용근 포스텍 교수 등 6인 수상 . 이인준 . 31 May 2022 . . 3 June 2022 . Korean.
  24. Web site: Sukbok Chang Wins Top Korean Science Prize . Fields-Hall . Mia . 5 November 2019 . ACS Axial . . 6 March 2020 .
  25. Web site: 2019 Korea Best Scientist and Technologist Award, President of Korea . . 4 July 2019 . IBS KAIST Center for Catalytic Hydrocarbon Functionalizations . 6 March 2020 .
  26. Web site: '최고과기인상'에 김기남 삼성전자·장석복 KAIST . . 2 July 2019 . . HelloDD . 6 March 2020 . Korean.
  27. Web site: Professor Chang, Sukbok received the ACS-KCS Excellence Award for 2017 . . 27 April 2017 . Department of Chemistry . KAIST . 6 March 2020 .
  28. Web site: American and Korean Chemical Societies collaborate to recognize advancement of science . . 24 April 2017 . . 6 March 2020 .
  29. Web site: Awards . . Department of Chemistry . KAIST . 6 March 2020 .
  30. Web site: 장석복 KAIST 화학과 교수 . . 18 October 2018 . Nobel Science . 6 March 2020 . Korean.
  31. Web site: IBS Places First Among Korean Institutions by Featuring 9 Scientists in List of Highly Cited Researchers . . 4 December 2018 . . 6 March 2020 .
  32. Web site: Seven IBS Scientists Named World's Most Highly Cited Researchers: Accounting for 13.1% of Korea's scientists on the list . . 20 November 2019 . Institute for Basic Science . 6 March 2020 .
  33. Web site: 한림원 사람들/회원: 회원동정 (장석복) . . 4 July 2019. Korean Academy of Science and Technology . 6 March 2020 . Korean.

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