Lewis Base Directed Intermolecular Hydrogen Atom Transfer
路易斯碱定向分子间氢原子转移
基本信息
- 批准号:2102116
- 负责人:
- 金额:$ 50万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-09-01 至 2024-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
With support from the Chemical Synthesis Program in the Division of Chemistry, Professor Thomas Lectka of Johns Hopkins University is studying new ways to selectively modify one carbon-hydrogen bond in a complex molecule that features many carbon-hydrogen bonds. These types of reactions are important for systematically altering biologically active molecules to study their reactivity without having to build each individual molecule from scratch. Professor Lectka and his research team are determining how loci in a complex molecule interact with a carbon-hydrogen bond-activating agent and using this information to predict and improve the ability to choose a single carbon-hydrogen bond for activation. The carbon-hydrogen bonds in these studies are being converted to carbon-fluorine, carbon-bromine, carbon-oxygen, and carbon-nitrogen bonds, valuable C-H activation transformations in organic synthesis. Professor Lectka is also partnering with the JHU Women in Science and Engineering (WISE) program and the JHU-NSF STEM Achievement in Baltimore Elementary Schools (SABES) program to provide research experiences for local high school students.Site-selective C-H functionalization in complex molecular settings is a current grand challenge motivated by the desire to be able to study and modify natural products and pharmaceutical targets without having to individually prepare each analogue from basic building blocks. Professor Lectka and his research group are investigating a new approach to this problem through the development of hydrogen-atom transfer reagents that can specifically coordinate to a substrate and selectively activate a single carbon-hydrogen bond for C-X bond formation. Simultaneously, this team is also exploring the types of functional groups beyond ketones and enones that can influence the selectivity of the hydrogen-atom transfer reagents and determining the effect of substrate coordination to metal additives. These activities are providing a strong training platform for the professional development of graduate students and research experiences for undergraduate students.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
在化学系化学合成项目的支持下,约翰霍普金斯大学的Thomas Lectka教授正在研究一种新方法,可以选择性地修改一个复杂分子中的一个碳氢键,而这个分子具有许多碳氢键。这些类型的反应对于系统地改变生物活性分子来研究它们的反应性非常重要,而不必从头开始构建每个单独的分子。Lectka教授和他的研究小组正在确定复杂分子中的基因座是如何与碳氢键激活剂相互作用的,并利用这些信息来预测和提高选择单个碳氢键进行激活的能力。在这些研究中,碳氢键被转化为碳氟键、碳溴键、碳氧键和碳氮键,这是有机合成中有价值的碳氢活化转化。Lectka教授还与JHU女性科学与工程(WISE)项目和JHU- nsf STEM成就在巴尔的摩小学(SABES)项目合作,为当地高中生提供研究经验。由于希望能够研究和修饰天然产物和药物靶标,而无需从基本构建块单独制备每种类似物,复杂分子环境中的位点选择性C-H功能化是当前的一个巨大挑战。Lectka教授和他的研究小组正在研究一种解决这个问题的新方法,通过开发氢原子转移试剂,这种试剂可以特异性地与底物协调,并选择性地激活单个碳氢键以形成C-X键。同时,该团队也在探索酮和烯酮以外的功能基团类型,这些功能基团可以影响氢原子转移试剂的选择性,并确定底物配位对金属添加剂的影响。这些活动为研究生的专业发展和本科生的研究体验提供了强大的训练平台。该奖项反映了美国国家科学基金会的法定使命,并通过使用基金会的知识价值和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(12)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Rational Computational Design of Systems Exhibiting Strong Halogen Bonding Involving Fluorine in Bicyclic Diamine Derivatives
- DOI:10.1021/acs.joc.2c00497
- 发表时间:2022-06-05
- 期刊:
- 影响因子:3.6
- 作者:Harry, Stefan Andrew;Vemulapalli, Srini;Lectka, Thomas
- 通讯作者:Lectka, Thomas
How Do Face-to-Face Stacked Aromatic Rings Activate Each Other to Electrophilic Aromatic Substitution?
面对面堆叠的芳香环如何相互激活以实现亲电芳香取代?
- DOI:10.1021/acs.orglett.3c01401
- 发表时间:2023
- 期刊:
- 影响因子:5.2
- 作者:Kazim, Muhammad;Wang, Muyuan;Vemulapalli, Srini;Nguyen, Phuong Minh;Wang, Yuang;Siegler, Maxime A.;Dudding, Travis;Lectka, Thomas
- 通讯作者:Lectka, Thomas
An Electrochemical Approach to Directed Fluorination
定向氟化的电化学方法
- DOI:10.1021/acs.joc.2c01886
- 发表时间:2023
- 期刊:
- 影响因子:0
- 作者:Holt, Eric;Wang, Muyuan;Harry, Stefan Andrew;He, Chengkun;Wang, Yuang;Henriquez, Nicolas;Xiang, Michael Richard;Zhu, Andrea;Ghorbani, Fereshte;Lectka, Thomas
- 通讯作者:Lectka, Thomas
Through‐Space, Lone‐Pair Promoted Aromatic Substitution: A Relay Mechanism Can Beat Out Direct Activation
通过空间、孤独、配对促进芳香取代:中继机制可以击败直接激活
- DOI:10.1002/chem.202301550
- 发表时间:2023
- 期刊:
- 影响因子:0
- 作者:Kazim, Muhammad;Feng, Zhitao;Vemulapalli, Srini;Siegler, Maxime A.;Chopra, Anant;Minh Nguyen, Phuong;Gargiulo Holl, Maxwell;Guan, Liangyu;Dudding, Travis;Tantillo, Dean J.
- 通讯作者:Tantillo, Dean J.
C–C Bond Activation and Demethylenation of Epoxides by Amine Radical Dications
胺自由基双阳离子对环氧化物的 C–C 键激活和脱甲基化
- DOI:10.1021/acs.joc.3c00605
- 发表时间:2023
- 期刊:
- 影响因子:0
- 作者:Holt, Eric;Garrison, Nathaniel G.;Rowshanpour, Rozhin;Kim, Justin Jeeyoung;Henriquez, Nicolas;Lam, Winson;Kiame, Neil;Williams, Jack;Zhao, Sherrie;Dudding, Travis
- 通讯作者:Dudding, Travis
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Thomas Lectka其他文献
The reaction of aluminum cluster anions with tetrakis(dimethylamino)ethylene (TDMAE): Insertion of an aluminum anion into a C–N bond
- DOI:
10.1016/j.cplett.2009.09.101 - 发表时间:
2009-10-28 - 期刊:
- 影响因子:
- 作者:
Xiang Li;Andrej Grubisic;Soren Eustis;Di Wang;Thomas Lectka;Gerd F. Ganteför;Kit H. Bowen;R. Burgert;H. Schnöckel - 通讯作者:
H. Schnöckel
Can the −CFsub3/sub Group Act as a Tight, Well-Defined Hydrogen Bond Acceptor? A Clear Crystallographic CFsub2/sub–F···H–Nsup+/sup Interaction Says Yes
- CF3 基团能否充当紧密、定义明确的氢键受体?一个清晰的晶体学 CF2-F···H+N+相互作用表明是肯定的。
- DOI:
10.1021/acs.joc.4c00873 - 发表时间:
2024-07-05 - 期刊:
- 影响因子:3.600
- 作者:
Muyuan Wang;Nathaniel Garrison;Phuong Minh Nguyen;Aarush Prasad;Yuang Wang;Hyeok-Kyu Kwon;Gina Kim;Maxime A. Siegler;Thomas Lectka - 通讯作者:
Thomas Lectka
The close interaction of a C<img class="glyph" src="https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/sbnd" />F bond with a carbonyl π–system: Attractive, repulsive, or both?
- DOI:
10.1016/j.jfluchem.2016.06.016 - 发表时间:
2016-08-01 - 期刊:
- 影响因子:
- 作者:
Maxwell Gargiulo Holl;Mark D. Struble;Maxime A. Siegler;Thomas Lectka - 通讯作者:
Thomas Lectka
The C<img class="glyph" src="https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/sbnd" />F⋅⋅⋅H<img class="glyph" src="https://sdfestaticassets-us-east-1.sciencedirectassets.com/shared-assets/16/entities/sbnd" />CF<sub>2</sub> interaction: A combination of hydrogen bonding and <em>n</em> → <em>σ</em>* stabilization
- DOI:
10.1016/j.jfluchem.2023.110191 - 发表时间:
2023-11-01 - 期刊:
- 影响因子:
- 作者:
Nathaniel G. Garrison;Stefan Andrew Harry;Maxime A. Siegler;Guilherme Cariello;Rodrigo A. Cormanich;Thomas Lectka - 通讯作者:
Thomas Lectka
A highly selective C–H bond fluorination unlocks conformational reporting in a complex natural product derivative
一种高选择性的 C-H 键氟化作用揭示了一种复杂天然产物衍生物中的构象报告。
- DOI:
10.1039/d5sc01857a - 发表时间:
2025-04-10 - 期刊:
- 影响因子:7.400
- 作者:
Jonah Ruskin;Roxanne Dekeyser;Nathaniel Garrison;Phoebe Williams;Maya Kramer-Johansen;Ananya Majumdar;Travis Dudding;Adam Huczyński;Thomas Lectka - 通讯作者:
Thomas Lectka
Thomas Lectka的其他文献
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{{ truncateString('Thomas Lectka', 18)}}的其他基金
Two Complementary Approaches to Site-Selective HAT and ET Reactions
位点选择性 HAT 和 ET 反应的两种互补方法
- 批准号:
2350270 - 财政年份:2024
- 资助金额:
$ 50万 - 项目类别:
Standard Grant
New Approaches to Site-Selective Fluorination
位点选择性氟化的新方法
- 批准号:
1800510 - 财政年份:2018
- 资助金额:
$ 50万 - 项目类别:
Continuing Grant
New Approaches to Site-Selective Fluorination
位点选择性氟化的新方法
- 批准号:
1465131 - 财政年份:2015
- 资助金额:
$ 50万 - 项目类别:
Standard Grant
Polycomponent Catalysis in Organic Synthesis
有机合成中的多组分催化
- 批准号:
1152996 - 财政年份:2012
- 资助金额:
$ 50万 - 项目类别:
Standard Grant
Career: Catalytic, Enantioselective C-C Bond Forming Reactions of Imines
职业:亚胺的催化、对映选择性 C-C 键形成反应
- 批准号:
9874694 - 财政年份:1999
- 资助金额:
$ 50万 - 项目类别:
Standard Grant
Activation of C-F Bonds by Aryl Carbocations
芳基碳阳离子活化 C-F 键
- 批准号:
9809433 - 财政年份:1998
- 资助金额:
$ 50万 - 项目类别:
Continuing Grant
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