Results 221 to 230 of about 397,176 (340)

CO2‐to‐Cyclic Carbonate Transformation at Ambient Pressure Using a Mechanochemically Prepared Ti(III) Catalyst

Advanced Synthesis &Catalysis, EarlyView.
A Ti(III) complex synthesized mechanochemically catalyzes the cycloaddition of CO2 (1 bar) with terminal, internal, and trisubstituted epoxides. Mechanistic studies by density functional theory calculations reveal that the superior activity of Ti(III) compared to Ti(IV) arises from its lower oxophilicity, facilitating CO2 insertion into Ti–O bonds, as ...
Elena Álvarez‐Ruiz, Marta Navarro, Ignacio Sancho, Israel Fernández, Cristina Santamaría, Alberto Hernán‐Gómez   +5 more
wiley   +1 more source

Biomass-derived 5-(tolylmethyl)furfural as a promising diesel additive: preparation, process scale-up, and engine studies. [PDF]

RSC Adv
Yadav AK, Yadav SK, Kumar GN, Madav V, Dutta S.   +4 more
europepmc   +1 more source

The liquidation features of accidents involving large-scale emissions of petroleum products

, 2008
Yu. V. Zelenko, Chzhu Zhui
openalex   +2 more sources

Synthesis of Amidines Via P(III)/P(V)O Redox Catalyzed In Situ Formation of Imidoyl Chlorides From Amides

Advanced Synthesis &Catalysis, EarlyView.
A series of amidines are prepared via PIII/PVO redox catalyzed in situ formation of imidoyl chlorides from amides. The desired products are obtained in good to excellent yields. Moreover, the protocol is applied to the synthesis of Erlotinib. Amidines are a ubiquitous class of bioactive compounds found in a wide variety of natural products; thus ...
Viktorija Medvarić, Jan Paradies, Thomas Werner   +2 more
wiley   +1 more source

Carbon Dioxide to Chemicals: CO₂ Conversion Enhancement over Ni₃Ga/Cu-ZSM‑5 Composite Material. [PDF]

ACS Omega
Aboghander MW, Abidh S, Khan A, Bafaqeer A, Abdul Jameel AG, Chennampilly Ummer A.   +5 more
europepmc   +1 more source

Physico-chemical Analysis of an Ultisol Polluted with Different Petroleum Products Treated with Poultry Droppings and Planted with Maize in Benin City, Nigeria

, 2009
W. A. Molindo, AE Usifo, OC Akoma
openalex   +2 more sources

THE ORETICAL FOUNDATION FOR CALCULATION OF FLUID SYSTEMS IN THE SUBSURFACE CONTAMINATED WITH LIGHT PETROLEUM PRODUCTS DURING GROUNDWATER FLUCTUATION
Paper 3. Teoretical foundation for calculation of “air – light petroleum products – water” three-phase systems in porous media [PDF]

, 2016
N.S. Ognianik, N.K. Paramonova
openalex   +1 more source

Solvent‐Free Mechanocatalytic Reduction of Nitro Compounds with Hydrogen Gas and its Application in the Synthesis of Drugs and their Intermediates

Advanced Synthesis &Catalysis, EarlyView.
A solvent‐free mechanochemical reduction of nitro compounds using hydrogen gas is presented. In addition to enabling the synthesis of a variety of functionalized aniline derivatives, the method has been scaled up to gram quantities, evaluated for trace metal impurities, and applied to the synthesis of pharmaceutical compounds and their precursors.
Samarth Bhatnagar, Michael Felderhoff, Jan‐Hendrik Schöbel   +2 more
wiley   +1 more source

Redrawing the Mannich‐Type Reaction through Carbonyl Umpolung Reactivity

Advanced Synthesis &Catalysis, EarlyView.
GA: Herein, a conceptually novel one‐pot multicomponent strategy is reported for the streamlined construction of five‐membered imidazolidines from 1,2‐diaza‐1,3‐dienes (onefold), amines (twofold), and formaldehyde (twofold). This redesigned Mannich‐type reaction that exploits a carbene‐like activity of 1,2‐diaza‐1,3‐dienes (realized by “umpolung ...
Vittorio Ciccone, Sara Caselli, Giacomo Mari, Fabio Mantellini, Gianfranco Favi   +4 more
wiley   +1 more source