Results 91 to 100 of about 20,876 (282)

Synthesis of Enantioenriched α-Chiral Bicyclo[1.1.1]pentanes.

Organic Letters, 2019
Bicyclo[1.1.1]pentanes (BCPs), useful surrogates for para-substituted arenes, alkynes, and tert-butyl groups in medicinal chemistry, are challenging to prepare when featuring stereogenic centers adjacent to the BCP.
Marie L. J. Wong, J. Mousseau, Steven J. Mansfield, E. Anderson   +3 more
semanticscholar   +1 more source

1,2-Difunctionalized Bicyclo[1.1.1]pentanes: Long Sought After Bioisosteres for ortho/meta-Substituted Arenes

, 2020
The development of a versatile platform for the synthesis of 1,2-difunctionalized bicyclo[1.1.1]pentanes to potentially mimic ortho/meta-substituted arenes is described.
Jin-Xin Zhao, Yuxuan Chang, Jeff Elleraas, T. Montgomery, Jillian E. Spangler, S. Nair, Matthew Del Bel, Gary M Gallego, J. Mousseau, Matthew A. Perry, M. Collins, Julien C. Vantourout, P. Baran   +12 more
semanticscholar   +1 more source

Alkyl nitrates in outflow from North America over the North Atlantic during Intercontinental Transport of Ozone and Precursors 2004 [PDF]

, 2007
This paper is based on alkyl nitrate measurements made over the North Atlantic as part of the International Consortium for Research on Atmospheric Transport and Transformation (ICARTT).
Atlas, E., Blake, D. R., Hopkins, J. R., Lewis, A. C., Methven, John, Oram, D. E., Penkett, S. A., Purvis, R., Reeves, C. E., Slemr, J., Stewart, D. J., Watson, N. M., Worton, D.   +12 more
core   +1 more source

The First Enantioselective Organocatalytic Mukaiyama−Michael Reaction: A Direct Method for the Synthesis of Enantioenriched γ-Butenolide Architecture [PDF]

, 2003
The first enantioselective organocatalytic Mukaiyama−Michael reaction using α,β-unsaturated aldehydes has been accomplished. The use of iminium catalysis has provided a new strategy for the enantioselective addition of 2-silyloxy furans to unsaturated ...
Brown, Sean P., Goodwin, Nicole C., MacMillan, David W. C.   +2 more
core   +1 more source

Synthesis and Characterization of π‐Extended Azulenes via Nucleophilic Substitution and Intramolecular Cyclization of 5‐Alkynyl‐6‐Fluoroazulenes

ChemistryEurope, EarlyView.
A modular synthetic approach enables the preparation of azulene‐fused heterocycles via nucleophilic aromatic substitution followed by intramolecular cyclization of alkynyl fluoroazulenes. The method allows the incorporation of various heteroatoms (N, O, S, Se, and Te), leading to structurally diverse heteroannulated azulenes.
Martin C. Dietl, Matthias Scherr, Christopher Hüßler, Henrik T. Habeck, Carmen L. M. Henel, Jürgen Graf, Frank Rominger, Matthias Rudolph, A. Stephen K. Hashmi   +8 more
wiley   +1 more source

Anomeric Amides: Valuable Reagents in Synthetic Organic Chemistry. [PDF]

Angew Chem Int Ed Engl
Enabling late‐stage transformations and skeletal editing, anomeric amides have recently emerged as powerful synthetic tools. Due to their unique properties, anomeric amides have been employed in reactions ranging from amination to halogenation. This minireview provides an overview of recent progress in using anomeric amides across a variety of ...
Garg A, Vigier J, Lebel H, Besset T.
europepmc   +3 more sources

Redox‐Dependent Luminescence in a Pentavalent Uranyl Complex

ChemistryEurope, EarlyView.
Redox‐dependent luminescence in a molecular pentavalent uranyl complex supported by a pyridine dipyrrolide pincer ligand is presented. Electrochemical and chemical reduction of the uranyl(VI) species provides a stable uranyl(V) complex that emits blue light from a high‐energy excited state. The anti‐Kasha emission is credited to the presence of “nested”
Leyla R. Valerio, Asmita Sen, William W. Brennessel, Carsten Milsmann, Jochen Autschbach, Ellen M. Matson   +5 more
wiley   +1 more source

Hydrogen Bonding is Key Factor in Reversible NH3 Uptake Causing Vapochromic and Magnetochemical Switching in Ni(II) Paddlewheel Complexes

ChemistryEurope, EarlyView.
Nickel complexes showing reversible vapochromic and spin crossover behaviors upon coordination and release of NH3 were synthesized. They bear bidentate pyridazine ligands, which allows for formation of hydrogen bonds between NH3 and the ligand in the second coordination sphere.
Sebastian Rücker, Jörg A. Schachner, Sergey M. Borisov, Ferdinand Belaj, Silvia Carlotto, Lidia Armelao, Antoine Dupé, Nadia C. Mösch‐Zanetti   +7 more
wiley   +1 more source

Synthesis and applications of highly functionalized 1-halo-3-substituted bicyclo[1.1.1]pentanes† †Electronic supplementary information (ESI) available. CCDC 1825056–1825060. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c8sc01355a

Chemical Science, 2018
A wide range of halogenated bicyclo[1.1.1]pentanes are accessed by functional group tolerant radical ring-opening of tricyclo[1.1.1.01,3]pentane, using triethylborane as initiator.
D. Caputo, C. Arroniz, Alexander B Dürr, J. Mousseau, A. Stepan, Steven J. Mansfield, E. Anderson   +6 more
semanticscholar   +1 more source

Establishing Indium in Frustrated Lewis Pair Chemistry: From Synthesis to Catalytic Applications

ChemistryEurope, EarlyView.
Not that hard: The effects of chemical hardness of the soft FLP tBu2InCH2PtBu2 and its pyridine‐adduct tBu2In(py)CH2PtBu2 were examined in adduct formation reactions toward H2, CO2, and CS2. The frustrated Lewis pair shows catalytic activity in the reduction of CO2 with pinacolborane.
Daniel N. Heuer, Jan‐Hendrik Lamm, Hans‐Georg Stammler, Beate Neumann, Andreas Mix, Yury V. Vishnevskiy, Norbert W. Mitzel   +6 more
wiley   +1 more source