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New Approaches to Catalyst Screening and Development

催化剂筛选和开发的新方法

基本信息

批准号：
1800574
负责人：
David Hage
金额：
$ 47万
依托单位：
University of Nebraska-Lincoln
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-08-01 至 2021-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1800574&HistoricalAwards=false
关键词：
New Approaches Catalyst Screening Development

项目摘要

With funding from the Chemical Catalysis Program of the Division of Chemistry, Dr. David Berkowitz of the University of Nebraska-Lincoln is developing new reactions to help chemists in the industrial and pharmaceutical sectors and in academia. The target molecules have applications in drug discovery and the synthesis of new materials. The reactions that he and his team explore incorporate aspects of biology to get information on how fast reactions are going. These reactions also incorporate biology to make a large array of specific products. Dr. Berkowitz is actively engaged in outreach activities that promote the engagement of students in science, technology, engineering and mathematics (STEM) disciplines. These activities, which include undergraduate research internships in Dr. Berkowitz's laboratory, and open house presentations to high school students and their parents from a four-state area, are exposing students to STEM research early in their educational development.Dr. Berkowitz and co-workers develop a catalyst screening process, termed In Situ Enzymatic Screening (ISES). The method utilizes "reporting enzymes" to provide real time information on relative rate, stereoselectivity and substrate scope for a set of parallel organic/organometallic reactions of interest. Dr. Berkowitz is studying the first catalytic asymmetric allylic amination reaction with Ni and promising new chiral salen ligands that derive from beta-pinene- and beta-D-(carba)fructopyranose-derived-1,2-diamines. A promising new formal thiocyanopalladation/carbocyclization transformation has been discovered and is being applied to the construction of densely functionalized and polycyclic libraries for diversity-oriented synthesis (DOS). Throughput is addressed with the development of alternative spectroscopic read-outs and screening arrays. Temperature variation is being expanded via the development of "thermal-ISES" through the introduction of thermophilic "reporting enzymes." New transition metal-ligand combinations are explored toward the stereocontrolled construction of quaternary, beta,gamma-unsaturated amino acid targets of interest to synthetic chemists, medicinal chemists, and chemical biologists. In support of the broader impacts of the project, Dr. Berkowitz mentors female students and members of traditionally underreperesented groups in his laboratory. The interdisciplinary training that students receive at the chemistry/biology interface includes significant exposure to spectroscopy and kinetics. These skills is equiping these students for careers in both modern industrial and academic chemistry settings.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.

在化学系化学催化项目的资助下，内布拉斯加大学林肯分校的David Berkowitz博士正在开发新的反应，以帮助工业和制药部门以及学术界的化学家。靶分子在药物发现和新材料合成中具有广泛的应用。他和他的团队探索的反应结合了生物学的各个方面，以获得反应速度的信息。这些反应还结合了生物学，产生了大量的特定产物。Berkowitz博士积极参与推广活动，促进学生参与科学，技术，工程和数学（STEM）学科。这些活动包括在伯科维茨博士的实验室进行本科生研究实习，以及向来自四个州地区的高中生及其家长进行开放日演讲，让学生在教育发展的早期就接触到STEM研究。Berkowitz及其同事开发了一种催化剂筛选工艺，称为原位酶筛选（ISES）。该方法利用“报告酶”为一组感兴趣的平行有机/有机金属反应提供相对速率、立体选择性和底物范围的实时信息。Berkowitz博士正在研究镍的第一个催化不对称烯丙基胺化反应，以及由-蒎烯-和-d -（碳水化合物）果糖吡喃糖衍生的-1,2-二胺衍生的新的手性salen配体。一种新的有前途的形式硫氰化/碳环化转化被发现，并被应用于构建面向多样性合成（DOS）的密集功能化和多环文库。通量是解决与发展替代光谱读出和筛选阵列。通过引入嗜热“报告酶”，通过“热- ises”的发展，温度变化正在扩大。合成化学家、药物化学家和化学生物学家对新的过渡金属-配体组合的立体控制构建感兴趣的季、β、γ -不饱和氨基酸目标进行了探索。为了支持该项目产生更广泛的影响，伯科维茨博士在他的实验室里指导女学生和传统上代表性不足的群体的成员。学生在化学/生物界面接受的跨学科培训包括大量接触光谱学和动力学。这些技能装备了这些学生在现代工业和学术化学环境中的职业生涯。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。