A flow chemistry system in combination with solid-supported reagents and scavengers was used to perform fluorination reactions in a continuous mode. Using an inline analysis method, the effect of the solid supported reagents and scavengers on the product stream can be investigated. Continue reading
The desire to gain major improvements in product quality, yield, synthetic route, cycle time and safety in chemical processes have become key driving factors for chemists and engineers working in the chemical development and manufacturing environment in the pharmaceutical and fine chemical industries. In order to achieve these goals, scientists are actively seeking alternative chemical development methods such as modern continuous flow reactor technologies. These technologies provide the opportunity to address many of these issues as they allow for rapid testing, optimization, and scaling of chemical sequences, many of which are unsafe for batch operations.
Highly reactive chemistry is the generic term referring to chemical reactions that pose a challenge due to the potentially hazardous and/or energetic nature of the reactants, intermediates and products that are present during synthesis. Highly reactive chemistries include Grignard, acid chloride, azide, halogenation, and hydrogenation. Continue reading
Running a chemical reaction can require a great deal of supervision. Continue reading
While analytical technologies that support synthetic organic chemistry in the laboratory have changed dramatically, chemical synthesis itself has remained largely unchanged for over fifty years. During that time, the round bottom flask has been the workhorse for organic chemists in the synthesis lab. Continue reading
As I mentioned prior to the 241st American Chemical Society (ACS) National Meeting and Exposition in Anaheim, there was an Enabling and Optimizing Chemical Reactions in Real Time Flow Chemistry and In Situ Analysis workshop. Continue reading
原位红外 (IR) 光谱越来越多地被用于有机合成化学，因为它具备提供关键信息的能力，它所提供的信息可使研究人员们解释众多各种反应的机理、动力学及途径。
新的 金属催化反应中使用原位光谱的白皮书重点列举了学术界用原位IR光谱作为一种智能工具来揭示其研究中的关键参数的案例。作者突出了对应用原位IR光谱的描述、并说明它是如何帮助研究人员们解答关键问题的。所引用的工作来自Emory大学（美国）、Albany大学 （SUNY，美国）、Buffalo大学（SUNY，美国）、Bari大学（意大利）、 武汉大学 （中国）、Stockholm大学（瑞典）的研究组。
2-Lithio-3,3-dimethyl-2-oxazolinyloxirane: Carbanion or Azaenolate?
Vito Capriati*, Saverio Florio*, Renzo Luisi, Filippo Maria Perna and Agnese Spina
Dipartimento Farmaco-Chimico, Università di Bari, Consorzio Interuniversitario Nazionale Metodologie e Processi Innovativi di Sintesi C.I.N.M.P.I.S., Via E. Orabona 4, I-70125 Bari, Italy; J. Org. Chem., 2008, 73 (24), pp 9552–9564.
Structure, Configurational Stability and Stereodynamics in Solution
During this work, Vito Capriati, Saverio Florio and colleagues at the University of Bari in Italy used in situ Infrared (IR) and Nuclear Magnetic Resonance (NMR) spectroscopy together to give a better insight into the stability of lithium salt and to ultimately answer the question:
“Is the lithium salt more like an organolithium or is it more like an azaenolate?”
Jørn Hansen†, Bo Li‡, Evgeny Dikarev‡, Jochen Autschbach§ and Huw M. L. Davies*†
† Department of Chemistry, Emory University, 440 Atwood Hall, 1515 Dickey Drive, Atlanta, Georgia 30322 ‡ Department of Chemistry, University at Albany, State University of New York, Albany, New York 12222 § Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260-3000 J. Org. Chem., 2009, 74 (17), pp 6564–6571
Combined Experimental and Computational Studies
This paper reports on work by Huw Davies and colleagues at Emory University in Atlanta, GA. During their work, Professor Davies and his colleagues evaluate the catalytic activity of heterobimetallic Bi-Rh carboxylate complexes in metal carbenoid chemistry and cyclopropanation reactions. Continue reading