Results 201 to 210 of about 1,320,636 (220)

Catalytic Homogeneous Asymmetric Hydrogenation: Successes and Opportunities

Organometallics, 2019
This is an overview of successes in the realm of catalytic homogeneous asymmetric hydrogenation of substrates primarily of interest in the synthesis of pharmaceuticals in order to identify important problems still unsolved.
Chris S. G. Seo, R. Morris
semanticscholar   +1 more source

Homogeneous Functionalization of Methane.

Chemical Reviews, 2017
One of the remaining "grand challenges" in chemistry is the development of a next generation, less expensive, cleaner process that can allow the vast reserves of methane from natural gas to augment or replace oil as the source of fuels and chemicals ...
N. Gunsalus, Anjaneyulu Koppaka, Sae Hume Park, S. Bischof, B. Hashiguchi, R. Periana   +5 more
semanticscholar   +1 more source

Simultaneous phase and amplitude extraction from a single defocused image of a homogeneous object

Journal of Microscopy, 2002
We demonstrate simultaneous phase and amplitude extraction from a single defocused image of a homogeneous object. Subject to the assumptions explicitly stated in the derivation, the algorithm solves the twin‐image problem of in‐line holography and is ...
D. Paganin, S. Mayo, T. Gureyev, P. Miller, S. Wilkins   +4 more
semanticscholar   +1 more source

Endobronchial Valve Therapy in Patients with Homogeneous Emphysema. Results from the IMPACT Study.

American Journal of Respiratory and Critical Care Medicine, 2016
RATIONALE Endobronchial valves (EBVs) have been successfully used in patients with severe heterogeneous emphysema to improve lung physiology. Limited available data suggest that EBVs are also effective in homogeneous emphysema.
A. Valipour, D. Slebos, F. Herth, K. Darwiche, M. Wagner, J. Ficker, Christoph Petermann, R. Hubner, F. Stanzel, R. Eberhardt   +9 more
semanticscholar   +1 more source

Atom Economy—A Challenge for Organic Synthesis: Homogeneous Catalysis Leads the Way

, 1995
Enhancing the efficiency of the synthesis of complex organic products constitutes one of the most exciting challenges to the synthetic chemist. Increasing the catalogue of reactions that are simple additions or that minimize waste production is the ...
B. Trost
semanticscholar   +1 more source

The Mechanism of Water Oxidation: From Electrolysis via Homogeneous to Biological Catalysis

, 2010
Striving for new solar fuels, the water oxidation reaction currently is considered to be a bottleneck, hampering progress in the development of applicable technologies for the conversion of light into storable fuels.
H. Dau, C. Limberg, T. Reier, M. Risch, S. Roggan, P. Strasser   +5 more
semanticscholar   +1 more source

On the Nature of the Active Species in Palladium Catalyzed Mizoroki–Heck and Suzuki–Miyaura Couplings – Homogeneous or Heterogeneous Catalysis, A Critical Review

, 2006
A wide array of forms of palladium has been utilized as precatalysts for Heck and Suzuki coupling reactions over the last 15 years. Historically, nearly every form of palladium used has been described as the active catalytic species.
N. Phan, M. V. Sluys, Christopher W. Jones   +2 more
semanticscholar   +1 more source

Transformation of carbon dioxide with homogeneous transition-metal catalysts: a molecular solution to a global challenge?

Angewandte Chemie, 2011
A plethora of methods have been developed over the years so that carbon dioxide can be used as a reactant in organic synthesis. Given the abundance of this compound, its utilization in synthetic chemistry, particularly on an industrial scale, is still at
M. Cokoja, Christian Bruckmeier, B. Rieger, W. Herrmann, F. E. Kühn   +4 more
semanticscholar   +1 more source

Cultural diversity''s impact on interaction process and performance: Comparing homogeneous and diver

, 1993
The interaction process and performance of culturally homogeneous and culturally diverse groups were studied for 17 weeks. Initially, homogeneous groups scored higher on both process and performance effectiveness.
Warren E. Watson, Kamalesh Kumar, L. Michaelsen   +2 more
semanticscholar   +1 more source

Electrocatalytic and homogeneous approaches to conversion of CO2 to liquid fuels.

Chemical Society Reviews, 2009
Research in the field of catalytic reduction of carbon dioxide to liquid fuels has grown rapidly in the past few decades. This is due to the increasing amount of carbon dioxide in the atmosphere and a steady climb in global fuel demand.
Eric E Benson, C. Kubiak, Aaron J. Sathrum, Jonathan M. Smieja   +3 more
semanticscholar   +1 more source