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PDF Download SynformPeople, Trends and Views in Chemical Synthesis 2019/01 Approaching Sub-ppm-Level Asymmetric Organocatalysis of a Highly Challenging and Scalable Carbon–Carbon Bond-Forming Reaction Highlighted article by H. Y. Bae, D. Höfler, P. S. J. Kaib, P. Kasaplar, C. K. De, A. Döhring, S. Lee, K. Kaupmees, I. Leito, B. List This document was downloaded for personal use only. Unauthorized distribution is strictly prohibited. Contact Your opinion about Synform is welcome, please correspond if you like: [email protected] Thieme A2 Synform Dear Readers, First of all, Happy New Year! In this issue At the beginning of every year there is a “trend” going Editorial Board Focus on in magazines, newspapers and the online marketing Trends in Organic Synthesis .................................. A3 community: asking a number of experts about the Literature Coverage upcoming trends in the New Year and beyond. As these Exploring the Performance of Nanostructured Reagents articles are very popular, we thought we could apply with Organic-Group-Defined Morphology in Cross- the same concept to our beloved field of chemistry and Coupling Reaction. A5 ask our Editors for their opinion on the hottest trends Literature Coverage or topics in organic synthesis. Answers from a few of us Approaching Sub-ppm-Level Asymmetric Organo- can be found in the first article of this year. catalysis of a Highly Challenging and Scalable Carbon– Carbon Bond-Forming Reaction ............................. A8 I hope you like the idea, which – I have to confess – Literature Coverage is not mine but comes from our creative Marketing Acceptorless Dehydrogenative Coupling Using Ammonia: Associate Evelyn Hosner. This is a one-off article, so you Direct Synthesis of N-Heteroaromatics from Diols Catal- won’t see it again next year!! yzed by Ruthenium ...........................................A12 The other articles in this issue cover a number of Coming soon ...................................................A15 new, exciting organic chemistry topics. Ananikov and col leagues (Russian Federation) report on the perform- ance of nanostructured reagents in cross-coupling Enjoy your reading!! reactions. Our SYnLett Editor-in-Chief, Ben List (Ger- many), describes how it is possible to use tiny, sub-ppm amounts of organocatalyst for achieving stereocon- trolled and scalable carbon–carbon bond-forming reactions. Finally, David Milstein (Israel) elaborates on Contact the use of ammonia in dehydrogenative Ru-catalyzed If you have any questions or wish to send coupling reactions leading to the formation of five- and feedback, please write to Matteo Zanda at: This document was downloaded for personal use only. Unauthorized distribution is strictly prohibited. six-membered nitrogen heterocycles. [email protected] Finally, there is more big news I am delighted to share with you. After nearly 10 years in Aberdeen I decided to move south of the border, precisely to Lough- borough University in England, where I am taking on the direction of the new Centre for Imaging Science. Leaving Scotland really breaks my heart but hey, we are academ ics, we move! © Georg Thieme Verlag Stuttgart • New York – Synform 2019/01, A2 • Published online: December 14, 2018 • DOI: 10.1055/s-0037-1609811 A3 Synform Editorial Board Focus Future Trends for Organic Synthesis: An Opinion from Our Editors For this month’s Editorial Board Focus, we asked some of our Editors about their thoughts on the future of organic synthesis. Here’s what they had to say: Tom Rovis Paul Knochel Where is Organic Synthesis going? One important future goal in or- Every several years, an event comes ganic synthesis will be to prepare along that causes a survey like organic molecules in the most ef- this where we get all introspective ficient manner in enough quanti- about the field. Inevitably, the ties so that the physical, chemical answer is something along the and biological properties of these lines of ”my field is moving in the organic molecules can be easily as- direction of my research program“. sessed. Over the recent years, the Rather than succumbing to this, I amount of material for such mo- choose to paraphrase the late Frank lecular property determinations Westheimer: if I knew what was has become increasingly smaller, going to be important in 20 years, I‘d be doing it right now. so that the preparation of complex target molecules can be What I do believe is that synthesis will still be important, en visioned to be performed using continuous flow methods. central and relevant. It is our field that uncovers reactivity These fully automated machines are able to perform mul- and pushes the boundaries of how we assemble molecules. tistep syntheses of elaborated drugs including automatic Regardless of where organic chemistry ends up, making mo- analyses, purification, spectroscopic characterization as well lecules will always be important. It is what makes chemistry as optimizations. Combined with retrosynthetic analysis pro- central to all other areas of science. grams, the overnight synthesis of complex natural products or potential drug candidates may become reality and rou tine. Based on the pioneering works of S. V. Ley,1 Y. I. Yoshida,2 Henry Wong T. Jamison,3 M. Organ4 and others,5 an important research field in organic synthesis will be the performance of multi- One of the most significant aspects step sequences in continuous flow. The performance of orga- of organic synthesis is its enor- nic reactions under these conditions is also a real advantage mous degree of creativity, because for generating unstable or dangerous intermediates under organic synthesis can create not reproducible safe conditions, making such reaction inter- only known molecules, but also mediates – which were avoided in the past – into acceptable functional and hitherto unknown reaction partners for the design of organic target molecules. molecules. Through its connec- Although the way towards fully automated organic reactions This document was downloaded for personal use only. Unauthorized distribution is strictly prohibited. tions with many other scientific is still long, feasible and reliable pathways toward such a goal disciplines, organic synthesis can are becoming apparent. The future availability of such auto- also create interdisciplinary fron- mated total synthesis mechanisms would considerably facil- tiers such as chemical biology, new itate the life of organic chemists, who would then be able to energy sources, and health industries. These new frontiers concentrate more on the design of new organic molecules would in turn induce a great deal of challenge to synthesis, with ambitious physical, chemical or biological properties. leading it to strive for more scientific creativity, and to reach Much work and brilliant perspectives exist for the future ge- new heights. nerations of organic chemists! © Georg Thieme Verlag Stuttgart • New York – Synform 2019/01, A3–A4 • Published online: December 14, 2018 • DOI: 10.1055/s-0037-1609817 A4 Synform Editorial Board Focus Laurence Harwood Matteo Zanda This is in haste but one area where As the Editor of Synform, I have to I could see chemistry and biology admit that I had an advantage over combining is in a halfway house my fellow Editors, because I could between whole cell culture and read their contributions before using enzymes. What I am thinking writ ing these few lines. And I can’t of is using combinations of organ- help but confess that – like Tom elles in a single culture to carry Rovis – I am a bit sceptical as I don’t out multiple step conversions, e.g. think anyone can really gaze into a Golgi bodies + mitochondria in the crystal ball and come up with reli- same medium, each carrying out able predictions on what’s the next its transformations as a mini syn- big thing in any area of research, thesis factory, one organelle producing substrate(s) for the including organic chemistry of course. It is not like predict- other. This would be more for industrial production than as ing who is going to win the next World Cup, as we all have a laboratory tool but it would need laboratory scale studies our biases here and we all probably tend to over-emphasise to develop and separate the specific organelles and to design the field of research we are working in. Nevertheless, I’d still the synthetic medium. like to predict something, or – better – make an observation: the influence of Artificial Intelligence (AI) on chemistry will become massive. I don’t think we’ll get to a Terminator-like scenario any time soon – at least I hope not – but AI is already assuming a key role in a number of aspects of modern life, in- RefereNCes cluding research, and although the human factor is still vitally important, I suspect that the role of computers, algorithms (1) (a) T. Brodmann, P. Koos, A. Metzger, P. Knochel, S. V. Ley and AI will continue to become increasingly important, which Org. Process Res. Dev. 2012, 16, 1102–1113. (b) S. V. Ley, is pretty much in line with Paul Knochel’s observations above D. E. Fitzpatrick, R. M. Myers, C. Battilocchio, R. J. Ingham, on automated synthesis. It’s already happening, that’s why I Angew. Chem. Int. Ed. 2015, 54, 10122–10136. don’t think this is a prediction. AI will save a lot of our time (c) C. Battilocchio, F. Feist, A. Hafner, M. Simon, D. N. Tran, and help us deal with a number of practical problems in che- D. M. Allwood, D. C. Blakemore, S. V. Ley Nat. Chem. 2016, 8, mical research, for example synthesis planning and execu- 360–367. tion, structure elucidation and experiment design. We just (2) (a) H. Kim, A. Nagaki, J.-i. Yoshida Nat. Commun. 2011, 2, have to make sure that we use AI in the right way, as we don’t 264. (b) A. Nagaki, K. Imai, S. Ishiuchi, J.-i. Yoshida want to end up like Sarah Connor and her son, do we … Angew.
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