Search Results - "Surya Prakash, G. K."

Homogeneous Hydrogenation of CO2 and CO to Methanol: The Renaissance of Low‐Temperature Catalysis in the Context of the Methanol Economy by Sen, Raktim, Goeppert, Alain, Surya Prakash, G. K.

“…The traditional economy based on carbon‐intensive fuels and materials has led to an exponential rise in anthropogenic CO2 emissions. Outpacing the natural…”
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Taming of Fluoroform: Direct Nucleophilic Trifluoromethylation of Si, B, S, and C Centers by Prakash, G. K. Surya, Jog, Parag V., Batamack, Patrice T. D., Olah, George A.

“…Fluoroform (CF 3 H), a large-volume by-product of the manufacture of Teflon, refrigerants, polyvinylidene fluoride (PVDF), fire-extinguishing agents, and…”
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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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Combined CO2 Capture and Hydrogenation to Methanol: Amine Immobilization Enables Easy Recycling of Active Elements by Kar, Sayan, Goeppert, Alain, Prakash, G. K. Surya

“…Amines were immobilized onto solid supports and employed for tandem CO2 capture and conversion to CH3OH using homogeneous hydrogenation catalysts. The…”
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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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ipso-Nitration of Arenes by Prakash, G.K. Surya, Mathew, Thomas

“…Meeting the challenge: Buchwald et al. have developed a very efficient and mild method for the ipso‐nitration of a variety of aromatic/heteroaromatic…”
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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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Integrated CO2 Capture and Conversion to Formate and Methanol: Connecting Two Threads by Kar, Sayan, Goeppert, Alain, Prakash, G. K. Surya

“…Conspectus The capture of CO2 from concentrated emission sources as well as from air represents a process of paramount importance in view of the increasing CO2…”
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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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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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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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Oxidation‐Resistant, Cost‐Effective Epoxide‐Modified Polyamine Adsorbents for CO2 Capture from Various Sources Including Air by Goeppert, Alain, Zhang, Hang, Sen, Raktim, Dang, Huong, Prakash, G. K. Surya

“…CO2 adsorbents based on the reaction of pentaethylenehexamine (PEHA) or tetraethylenepentamine (TEPA) with propylene oxide (PO) were easily prepared in “one…”
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Chlorotrimethylsilane−Nitrate Salts as Oxidants:  Direct Oxidative Conversion of Thiols and Disulfides to Sulfonyl Chlorides by Prakash, G. K. Surya, Mathew, Thomas, Panja, Chiradeep, Olah, George A

“…A mixture of nitrate salt and chlorotrimethylsilane is found to be a mild and efficient reagent for the direct oxidative conversion of thiols (1) and…”
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Octahydriodo diborane (B2H8) and its protonated cations containing five-, six-, and seven-coordinate boron atoms by Olah, George A, Surya Prakash, G. K, Rasul, Golam

“…Structures of octahydriodo diborane (B2H8) 1 and its protonated 3, diprotonated 5, triprotonated 6, and tetraprotonated 7 ions were found to be calculationally…”
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Addition of Imidazolium‐Based Ionic Liquid to Improve Methanol Production in Polyamine‐Assisted CO2 Capture and Conversion Systems Using Pincer Catalysts by Koch, Christopher J., Goeppert, Alain, Surya Prakash, G. K.

“…Ionic liquids have been studied as CO2 capture agents. However, they are rarely used in combined CO2 capture and conversion processes. Utilizing…”
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Gallium (III) Triflate Catalyzed Efficient Strecker Reaction of Ketones and Their Fluorinated Analogs by Prakash, G. K. Surya, Mathew, Thomas, Panja, Chiradeep, Alconcel, Steevens, Vaghoo, Habiba, Do, Clement, Olah, George A.

“…The synthesis of α-aminonitriles and their fluorinated analogs has been carried out in high yield and purity by the Strecker reaction from the corresponding…”
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Direct Access to Acyl Fluorides from Carboxylic Acids Using a Phosphine/Fluoride Deoxyfluorination Reagent System by Munoz, Socrates B, Dang, Huong, Ispizua-Rodriguez, Xanath, Mathew, Thomas, Prakash, G. K. Surya

“…A fast and simple method for deoxyfluorination of carboxylic acids is presented. The protocol employs commodity chemicals (PPh3, NBS, fluoride), affording…”
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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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Stereoselective Monofluoromethylation of Primary and Secondary Alcohols by Using a Fluorocarbon Nucleophile in a Mitsunobu Reaction by Prakash, G. K. Surya, Chacko, Sujith, Alconcel, Steevens, Stewart, Timothy, Mathew, Thomas, Olah, George A.

“…OH is exchanged: An efficient Mitsunobu reaction that uses a fluorinated carbon pronucleophile for the facile synthesis of monofluoromethyl derivatives of…”
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Photoredox Catalysis for the Synthesis of N‐CF2H Compounds Using 1‐((N‐(difluoromethyl)‐4‐methylphenyl)‐sulfonamido)pyridin‐1‐ium Trifluoromethanesulfonate by Lin, Daniel, Rios, Juan Pablo, Surya Prakash, G. K.

“…N‐(difluoromethyl)amino (−NCF2H) compounds are of great interest given their unique and underexplored physiochemical properties. The lack of structural…”
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