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Professor Sarah O’Connor, right, and graduate student Weerawat Runguphan have engineered periwinkle root cells that can produce variations of compounds that the plant normally synthesizes.
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Formal [2 + 2 + 2] Cycloaddition Strategy Based on an Intramolecular Propargylic Ene Reaction/Diels-Alder Cycloaddition Cascade
Robinson, J. M.; Sakai, T.; Okano, K.; Kitawaki, T.; Danheiser, R. L.
J. Am. Chem. Soc. 2010, 132, 11039-11041
Cyano Diels-Alder and Cyano Ene Reactions. Applications in a Formal [2 + 2 + 2] Cycloaddition Strategy for the Synthesis of Pyridines
Sakai, T.; Danheiser, R. L.
J. Am. Chem. Soc. 2010, 132, 13203-13205
The Danheiser Lab has reported several new [2 + 2 + 2] cycloaddition strategies for the synthesis of carbocyclic and heterocyclic organic compounds. The new ring-forming strategies are based on cascades of unusual pericyclic reactions and require no reagents or catalysts. In one version, polycyclic pyridine derivatives are constructed in a process that proceeds via a rare propargylic ene reaction and which involves the unprecedented participation of an unactivated cyano group as a Diels-Alder dienophile. |
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A new analysis by MIT researchers could make it possible to design more efficient artificial systems that mimic the way plants harvest the energy of sunlight through photosynthesis.
The study is the latest in an ongoing series examining the process of photosynthesis and the different variables that determine its efficiency, conducted by Professor of Chemistry Jianshu Cao and his postdocs and colleagues. The new work, which looks at artificial photosynthetic systems based on self-assembling molecules designed by researchers at of the University of California, Berkeley, follows a paper they published in October in the New Journal of Physics that examined the factors that determine the efficiency of natural photosynthesis. More>> |
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