Mar 10, 2015 - The Bergman cyclization(1) of enediynes is a very attractive method to ... highly reactive diradical intermediates en route to new arom...
Mar 10, 2015 - Sven FabigAlexandra JaniszewskiMartin FloÃMathis KreuzahlerGebhard Haberhauer. The Journal of Organic Chemistry 2018 83 (15), 7878- ...
Mar 10, 2015 - High-level quantum chemical calculations reveal that the dimerization of enediynes to 1,3-butadiene-1,4-diyl diradicals is energetically more favored than the corresponding Bergman cyclization of enediynes. Moreover, the activation bar
May 1, 1994 - Abstract: The energetics of the Bergman cyclization of (Z)-hexa-l,5-diyn-3-ene (1) to 1,4-didehydrobenzene (2) have been investigated at the CCSD(T)/6-3 lG(d,p) level of theory, optimizing various structures along the reaction path. The
Daniel J. Marell , Lawrence R. Furan , Brian P. Woods , Xiangyun Lei , Andrew J. Bendelsmith , Christopher J. Cramer , Thomas R. Hoye , and Keith T. Kuwata.
Aug 4, 2016 - We investigate the thermally induced cyclization of 1,2-bis(2-phenylethynyl)benzene on Au(111) using scanning tunneling microscopy and computer simulations. Cyclization of sterically hindered enediynes is known to proceed via two compet
Aug 4, 2016 - We investigate the thermally induced cyclization of 1,2-bis(2-phenylethynyl)benzene on Au(111) using scanning tunneling microscopy and computer simulations. Cyclization of sterically hindered enediynes is known to proceed via two compet
Jun 16, 2016 - New Synthetic Methods for Phosphate Labeling. Amit K. Dutta , Ilya Captain , Henning Jacob Jessen. Topics in Current Chemistry 2017 375 (3), ...
Jun 16, 2016 - Figure 2. (A) Reaction sequence for the synthesis of C2-symmetric dinucleoside ..... M.; Spieker , C.; Witzel , H.; Zidek , W. Nature 1994, 367 (6459) 186 DOI: 10.1038/367186a0 ... Verspohl , E. J.; Johannwille , B. Diabetes 1998, 47 (
Aug 4, 2016 - emerging C radical center in 6 sinks and binds to the Au(111); at the transition state, however, both C centers are bound to the Au(111) surface.
Aug 25, 2010 - In principle, the point of divergence can be investigated using pyrrolo[1 ... Attempts to close the C(9)âC(9a) bond therefore focused on lithium amide bases ... Choice of temperature, base, and solvent proved critical for .... Showin
Mar 10, 2015 - The Bergman cyclization(1) of enediynes is a very attractive method to ... highly reactive diradical intermediates en route to new aromatic rings.
