Search Results - "Olah, George A."

Anthropogenic Chemical Carbon Cycle for a Sustainable Future by Olah, George A, Prakash, G. K. Surya, Goeppert, Alain

“…Nature’s photosynthesis uses the sun’s energy with chlorophyll in plants as a catalyst to recycle carbon dioxide and water into new plant life. Only given…”
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Chemical Recycling of Carbon Dioxide to Methanol and Dimethyl Ether: From Greenhouse Gas to Renewable, Environmentally Carbon Neutral Fuels and Synthetic Hydrocarbons by Olah, George A, Goeppert, Alain, Prakash, G. K. Surya

“…Nature’s photosynthesis uses the sun’s energy with chlorophyll in plants as a catalyst to recycle carbon dioxide and water into new plant life. Only given…”
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Electrochemical CO2 Reduction: Recent Advances and Current Trends by Jones, John-Paul, Prakash, G. K. Surya, Olah, George A.

“…With rising levels of CO2 in our atmosphere, technologies capable of converting CO2 into useful products have become more valuable. The field of…”
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Carbon Dioxide Capture from the Air Using a Polyamine Based Regenerable Solid Adsorbent by Goeppert, Alain, Czaun, Miklos, May, Robert B, Prakash, G. K. Surya, Olah, George A, Narayanan, S. R

“…Easy to prepare solid materials based on fumed silica impregnated with polyethylenimine (PEI) were found to be superior adsorbents for the capture of carbon…”
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Synthesis of gem-Difluorinated Cyclopropanes and Cyclopropenes: Trifluoromethyltrimethylsilane as a Difluorocarbene Source by Wang, Fei, Luo, Tao, Hu, Jinbo, Wang, Ying, Krishnan, Hema S., Jog, Parag V., Ganesh, Somesh K., Prakash, G. K. Surya, Olah, George A.

“…Highly versatile: The Ruppert–Prakash reagent (Me3SiCF3) can be an efficient source of difluorocarbene. By varying the nonmetallic initiator that is used (F−…”
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Long-Lived Trifluoromethanide Anion: A Key Intermediate in Nucleophilic Trifluoromethylations by Prakash, G. K. Surya, Wang, Fang, Zhang, Zhe, Haiges, Ralf, Rahm, Martin, Christe, Karl O., Mathew, Thomas, Olah, George A.

“…The trifluoromethanide anion is the postulated key intermediate in nucleophilic trifluoromethylation reactions. However, for more than six decades, the…”
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Amine-Free Reversible Hydrogen Storage in Formate Salts Catalyzed by Ruthenium Pincer Complex without pH Control or Solvent Change by Kothandaraman, Jotheeswari, Czaun, Miklos, Goeppert, Alain, Haiges, Ralf, Jones, John-Paul, May, Robert B., Prakash, G. K. Surya, Olah, George A.

“…Due to the intermittent nature of most renewable energy sources, such as solar and wind, energy storage is increasingly required. Since electricity is…”
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Selective Late‐Stage Hydrodefluorination of Trifluoromethylarenes: A Facile Access to Difluoromethylarenes by Munoz, Socrates B., Ni, Chuanfa, Zhang, Zhe, Wang, Fang, Shao, Nan, Mathew, Thomas, Olah, George A., Prakash, G. K. Surya

“…A selective reductive monodefluorination reaction of trifluoromethyl arenes was developed. Mediated by magnesium metal, various difluoromethylated aromatics…”
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Iridium-Catalyzed Continuous Hydrogen Generation from Formic Acid and Its Subsequent Utilization in a Fuel Cell: Toward a Carbon Neutral Chemical Energy Storage by Czaun, Miklos, Kothandaraman, Jotheeswari, Goeppert, Alain, Yang, Bo, Greenberg, Samuel, May, Robert B, Olah, George A, Prakash, G. K. Surya

“…This study represents a notable step toward a potentially carbon neutral energy storage solution based on formic acid as a hydrogen/energy carrier. A catalytic…”
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Easily Regenerable Solid Adsorbents Based on Polyamines for Carbon Dioxide Capture from the Air by Goeppert, Alain, Zhang, Hang, Czaun, Miklos, May, Robert B., Prakash, G. K. Surya, Olah, George A., Narayanan, S. R.

“…Adsorbents prepared easily by impregnation of fumed silica with polyethylenimine (PEI) are promising candidates for the capture of CO2 directly from the air…”
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Towards Oil Independence Through Renewable Methanol Chemistry by Olah, George A.

“…Recycling of CO2 into methanol, dimethyl ether (DME), and derived fuels and materials is a feasible approach to address our carbon conundrum. It would free…”
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Gallium(III) Triflate: An Efficient and a Sustainable Lewis Acid Catalyst for Organic Synthetic Transformations by Prakash, G. K. Surya, Mathew, Thomas, Olah, George A

“…Green chemical processes play a crucial role in sustainable development, and efficient recyclable catalysts that can be conveniently applied in various…”
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N‑Difluoromethylation of Imidazoles and Benzimidazoles Using the Ruppert–Prakash Reagent under Neutral Conditions by Prakash, G. K. Surya, Krishnamoorthy, Sankarganesh, Ganesh, Somesh K, Kulkarni, Aditya, Haiges, Ralf, Olah, George A

“…Direct N-difluoromethylation of imidazoles and benzimidazoles has been achieved using TMS-CF3 (the Ruppert–Prakash reagent) under neutral conditions…”
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Formic Acid As a Hydrogen Storage Medium: Ruthenium-Catalyzed Generation of Hydrogen from Formic Acid in Emulsions by Czaun, Miklos, Goeppert, Alain, Kothandaraman, Jotheeswari, May, Robert B, Haiges, Ralf, Prakash, G. K. Surya, Olah, George A

“…Formic acid is decomposed to H2 and CO2 in the presence of RuCl3 and triphenylphosphines in an emulsion. In situ formed ruthenium carbonyls, such as…”
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Regioselective Synthesis of Phenols and Halophenols from Arylboronic Acids Using Solid Poly(N-vinylpyrrolidone)/ Hydrogen Peroxide and Poly(4-vinylpyridine)/Hydrogen Peroxide Complexes by Prakash, G. K. Surya, Chacko, Sujith, Panja, Chiradeep, Thomas, Tisa Elizabeth, Gurung, Laxman, Rasul, Golam, Mathew, Thomas, Olah, George A.

“…Solid hydrogen peroxide complexes based on poly(N‐vinylpyrrolidone) and poly(4‐vinylpyridine) were prepared and used as solid hydroxylating reagents. These…”
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Hydrogen Generation from Formic Acid Decomposition by Ruthenium Carbonyl Complexes. Tetraruthenium Dodecacarbonyl Tetrahydride as an Active Intermediate by Czaun, Miklos, Goeppert, Alain, May, Robert, Haiges, Ralf, Prakash, G. K. Surya, Olah, George A.

“…The present Minireview covers the formation and the structural characterization of noble metal carbonyl and hydrido carbonyl complexes, with particular…”
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From Difluoromethyl 2-Pyridyl Sulfone to Difluorinated Sulfonates: A Protocol for Nucleophilic Difluoro(sulfonato)methylation by Prakash, G.K. Surya, Ni, Chuanfa, Wang, Fang, Hu, Jinbo, Olah, George A

“…An efficient method for the synthesis of alkyl α,α‐difluorosulfonates has been developed. The selection of the 2‐pyridyl group as the aryl substitute on the…”
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Study of the fluoro- and chlorodimethylbutyl cations by Olah, George A., Prakash, G. K. Surya, Rasul, Golam

“…A comparative study of the 2,3-dimethyl-3-fluoro-2-butyl cation and its chloro analog was carried out by the ab initio/GIAO-CCSD(T) (gauge invariant atomic…”
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α-Fluoro-α-nitro(phenylsulfonyl)methane as a fluoromethyl pronucleophile: Efficient stereoselective Michael addition to chalcones by Prakash, G.K. Surya, Wang, Fang, Stewart, Timothy, Mathew, Thomas, Olah, George A

“…Highly efficient stereoselective 1,4-addition of racemic α-fluoro-α-nitro(phenylsulfonyl)methane (FNSM) as a fluoromethyl pronucleophile to α,β-unsaturated…”
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New Electrophilic Difluoromethylating Reagent by Prakash, G. K. Surya, Weber, Csaba, Chacko, Sujith, Olah, George A

“…A new electrophilic difluoromethylating reagent has been developed. The S-(difluoromethyl)diarylsulfonium tetrafluoroborate has been shown to be effective for…”
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