Results 151 to 160 of about 581,864 (396)

Koch Industries, Inc. Strategie Corporate Research Report [PDF]

, 2006
[Excerpt] With its 2005 purchase of paper giant Georgia-Pacific, Koch Industries became the largest privately-held corporation in North America. Originally started as an oil production and refining firm in the first half of the twentieth century, Koch ...
Hannah, Robert Wesley, Packman, Iris, Wells, Jordan, Yoo, Ed, Young, Patrick   +4 more
core   +1 more source

Direct Access to α,β‐Unsaturated γ‐Lactams via Palladium‐Catalysed Carbonylation of Propargylic Ureas.

Advanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.
Abstract Additive carbonylations typically necessitate strong nucleophiles, such as alcohols or amines. In this study, we carbonylated a poorly nucleophilic urea, under oxidant‐free conditions. Our straightforward carbonylative strategy enables access to versatile α,β‐unsaturated γ‐lactams featuring an aminocarbonyl fragment, utilizing readily ...
Debora Schiroli, Aleksandr Voronov, Francesco Pancrazzi, Nunzio Iraci, Salvatore Vincenzo Giofrè, Beatrice Macchi, Valeria Stefanizzi, Raffaella Mancuso, Bartolo Gabriele, Paolo Pio Mazzeo, Luca Capaldo, Nicola Della Ca'   +11 more
wiley   +1 more source

Improving the Photochemical Skeletal Enlargement of Pyridines to 1,2‐Diazepines with Isocyanates

Advanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.
Abstract In this work, we extend the one‐pot protocol to synthesize 1,2‐diazepines from commercially available and cheap starting materials. Capitalizing on isocyanate derivatives as activating agents, the photochemical skeletal enlargement occurs, while preserving key functional groups embedded in more than 30 substrates.
Clément Ghiazza, Aurélie Damond, Jérôme Marrot, Xavier Moreau   +3 more
wiley   +1 more source

Monitoring and modelling of variables affecting isomerate octane number produced from an industrial isomerization process

Egyptian Journal of Petroleum, 2018
Petroleum refineries are now facing much tighter and stricter transportation and fuel specification standards, as well as environmental regulations, than in previous years. Therefore, tough rules have been applied on gasoline specifications.
Walaa Mahmoud Shehata, Mohamed Fathy Mohamed, Fatma Khalifa Gad   +2 more
doaj  

Process simulation, optimization, and cost analysis of a proposed sulfur recovery unit by applying modified Claus technology

Journal of Engineering and Applied Science
Removing sour gas from any suitable gas sweetening technology in a cost-effective and environmentally responsible manner is a major challenge. This paper discusses how to safely and economically dispose of small amounts of acid gases resulting from the ...
Ahmed Medhat, Walaa Shehata, Fatma Gad, Ahmed Bhran   +3 more
doaj   +1 more source

Plant Corrosion Test of Stainless Steel on Petroleum Refining Unit

, 1959
Yahiko Kadono
openalex   +2 more sources

Kinetic modeling of a heterogeneous Fenton oxidative treatment of petroleum refining wastewater. [PDF]

ScientificWorldJournal, 2014
Hasan DB, Abdul Raman AA, Daud WM.
europepmc   +1 more source

Mg(SPh)2 as a Catalyst for Efficient Photocatalytic Alkylation Reactions of Active Methylene Compounds with Nonactivated Alkenes

Advanced Synthesis &Catalysis, Volume 367, Issue 5, March 4, 2025.
Abstract Mg(SPh)2 has been found to be a highly active catalyst in photocatalytic alkylation reactions of active methylene compounds with nonactivated alkenes. The desired reactions proceeded smoothly to afford the corresponding alkylated products in high yields with low catalyst loadings (0.2–0.3 mol%). This protocol is applicable to a continuous‐flow
Yasuhiro Yamashita, Tomoya Hisada, Yuki Sato, Shū Kobayashi   +3 more
wiley   +1 more source

Estimating Vertical Foreclosure in U.S. Gasoline Supply [PDF]

We examine the competitive effects of the vertical integration of gasoline refineries and retailers in the U.S. Adapting the first-order condition approach of static oligopoly games to the analysis of vertically related oligopolies, we develop a novel ...
BŸhler, Stefan, Zava Aydemir
core  

Asymmetric Synthesis of Highly Substituted Spiro[2H‐pyrrole‐2,3‐Succinimide] Derivatives by Copper‐Catalyzed Post‐Ugi Reactions

Advanced Synthesis &Catalysis, EarlyView.
Abstract Herein we present a novel one‐pot methodology for the synthesis of enantioenriched 2H‐pyrrolespirosuccinimides by copper‐catalyzed reactions on Ugi adducts derived from enantiopure α‐alkylbenzyl amines through a chirality transfer process. We have proposed a mechanism, supported by density functional theory (DFT) calculations, where a hydrogen
Javier Gómez‐Ayuso, Israel Carreira‐Barral, Roberto Quesada, María García‐Valverde   +3 more
wiley   +1 more source