1
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Asare MA, de Souza FM, Gupta RK. Waste to Resource: Synthesis of Polyurethanes from Waste Cooking Oil. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c03718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Magdalene A. Asare
- Department of Chemistry, Pittsburg State University, 1701 South Broadway Street, Pittsburg, Kansas 66762, United States
- National Institute for Materials Advancement, Pittsburg State University, 1701 South Broadway Street, Pittsburg, Kansas 66762, United States
| | - Felipe M. de Souza
- National Institute for Materials Advancement, Pittsburg State University, 1701 South Broadway Street, Pittsburg, Kansas 66762, United States
| | - Ram K. Gupta
- Department of Chemistry, Pittsburg State University, 1701 South Broadway Street, Pittsburg, Kansas 66762, United States
- National Institute for Materials Advancement, Pittsburg State University, 1701 South Broadway Street, Pittsburg, Kansas 66762, United States
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2
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Abdullayev Y, Javadova V, Valiyev I, Talybov A, Salmanov C, Autschbach J. Ionic Liquid-Mediated Urea Pyrolysis to Cyanuric Acid: Experimental Protocol and Mechanistic Insights. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yusif Abdullayev
- Department of Chemical Engineering, Baku Engineering University, Hasan Aliyev Str. 120, Baku, Absheron AZ0101, Azerbaijan
- Institute of Petrochemical Processes, Azerbaijan National Academy of Sciences, Hojaly Ave. 30, Baku AZ1025, Azerbaijan
| | - Valentina Javadova
- Department of Chemical Engineering, Baku Engineering University, Hasan Aliyev Str. 120, Baku, Absheron AZ0101, Azerbaijan
| | - Isa Valiyev
- Department of Chemistry and Biology, University of Siegen, Adolf-Reichwein Str. 2, D-57068 Siegen, Germany
| | - Avtandil Talybov
- Institute of Petrochemical Processes, Azerbaijan National Academy of Sciences, Hojaly Ave. 30, Baku AZ1025, Azerbaijan
| | - Cavanshir Salmanov
- Department of Chemical Engineering, Baku Engineering University, Hasan Aliyev Str. 120, Baku, Absheron AZ0101, Azerbaijan
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260-3000, United States
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3
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On the Photostability of Cyanuric Acid and Its Candidature as a Prebiotic Nucleobase. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27041184. [PMID: 35208973 PMCID: PMC8875432 DOI: 10.3390/molecules27041184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 02/02/2022] [Accepted: 02/05/2022] [Indexed: 11/28/2022]
Abstract
Cyanuric acid is a triazine derivative that has been identified from reactions performed under prebiotic conditions and has been proposed as a prospective precursor of ancestral RNA. For cyanuric acid to have played a key role during the prebiotic era, it would have needed to survive the harsh electromagnetic radiation conditions reaching the Earth’s surface during prebiotic times (≥200 nm). Therefore, the photostability of cyanuric acid would have been crucial for its accumulation during the prebiotic era. To evaluate the putative photostability of cyanuric acid in water, in this contribution, we employed density functional theory (DFT) and its time-dependent variant (TD-DFT) including implicit and explicit solvent effects. The calculations predict that cyanuric acid has an absorption maximum at ca. 160 nm (7.73 eV), with the lowest-energy absorption band extending to ca. 200 nm in an aqueous solution and exhibiting negligible absorption at longer wavelengths. Excitation of cyanuric acid at 160 nm or longer wavelengths leads to the population of S5,6 singlet states, which have ππ* character and large oscillator strengths (0.8). The population reaching the S5,6 states is expected to internally convert to the S1,2 states in an ultrafast time scale. The S1,2 states, which have nπ* character, are predicted to access a conical intersection with the ground state in a nearly barrierless fashion (ca. ≤ 0.13 eV), thus efficiently returning the population to the ground state. Furthermore, based on calculated spin–orbit coupling elements of ca. 6 to 8 cm−1, the calculations predict that intersystem crossing to the triplet manifold should play a minor role in the electronic relaxation of cyanuric acid. We have also calculated the vertical ionization energy of cyanuric acid at 8.2 eV, which predicts that direct one-photon ionization of cyanuric acid should occur at ca. 150 nm. Collectively, the quantum-chemical calculations predict that cyanuric acid would have been highly photostable under the solar radiation conditions reaching the Earth’s surface during the prebiotic era in an aqueous solution. Of relevance to the chemical origin of life and RNA-first theories, these observations lend support to the idea that cyanuric acid could have accumulated in large quantities during the prebiotic era and thus strengthens its candidature as a relevant prebiotic nucleobase.
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4
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Yang Q, Guo Y, Xu J, Wu X, He B, Blatchley ER, Li J. Photolysis of N-chlorourea and its effect on urea removal in a combined pre-chlorination and UV 254 process. JOURNAL OF HAZARDOUS MATERIALS 2021; 411:125111. [PMID: 33485223 DOI: 10.1016/j.jhazmat.2021.125111] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 12/27/2020] [Accepted: 01/10/2021] [Indexed: 06/12/2023]
Abstract
Urea is one of the most important nitrogenous organic pollutants in water, and its removal attracts attention because of a growing concern related to water eutrophication. Urea has previously been considered to be largely unaffected by the UV-chlorine process. However, N-chlorourea, an intermediate of urea chlorination, has been shown to absorb ultraviolet radiation, and as such its photolysis is possible. Experiments were conducted to quantify the kinetics of N-chlorourea degradation under UV254 irradiation. The results showed that about 92% of N-chlorourea was degraded under UV254 irradiation. Ammonia and nitrate were detected as the primary nitrogen containing products of the photolysis of N-chlorourea. Solution pH ranging from 3.0 to 7.5 influenced the distribution of these products but not on the degradation rate. Based on these data, a possible pathway of photodegradation of N-chlorourea under UV254 is proposed. The degradation of urea was also achieved by the photolysis of N-chlorourea during the combined pre-chlorination and UV254 process. Insights gained in this study may be useful for exploring the potential of combined pre-chlorination and UV254 process on urea removal in water treatment.
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Affiliation(s)
- Qian Yang
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China
| | - Yang Guo
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China
| | - Jie Xu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China
| | - Xingyi Wu
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China
| | - Bingying He
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China
| | - Ernest R Blatchley
- Lyles School of Civil Engineering, 550 Stadium Mall Drive, Purdue University, West Lafayette, IN 47907, USA; Division of Environmental & Ecological Engineering, Purdue University, West Lafayette, IN 47907, USA
| | - Jing Li
- Department of Applied Chemistry, China Agricultural University, Beijing 100193, PR China.
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5
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Gratzfeld D, Heitkämper J, Debailleul J, Olzmann M. On the influence of water on urea condensation reactions: a theoretical study. Z PHYS CHEM 2020. [DOI: 10.1515/zpch-2020-1658] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The influence of water molecules on the kinetics of urea condensation reactions was studied with high-level quantum chemical methods and statistical rate theory. The study focuses on the production of biuret, triuret, and cyanuric acid from urea because of their relevance as unwanted byproducts in the urea-based selective catalytic reduction (urea-SCR) exhaust after treatment of Diesel engines. In order to characterize the potential energy surfaces and molecular reaction pathways, calculations with explicitly-correlated coupled-cluster methods were performed. It turned out that the reactions proceed via pre-reactive complexes and the inclusion of one or two water molecules into the condensation mechanisms leads to a decrease of the energy barriers. This effect is particularly pronounced in the production of biuret. Due to the pre-reactive equilibria, the rates of the overall reactions can increase or decrease by incorporating water into the mechanism, depending on the temperature and water concentration. Under the conditions of urea-SCR, the studied reactions are too slow to contribute to the observed byproduct formation.
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Affiliation(s)
- Dennis Gratzfeld
- Institut für Physikalische Chemie, Karlsruher Institut für Technologie (KIT) , Kaiserstr. 12 , 76131 Karlsruhe , Germany
| | - Juliane Heitkämper
- Institut für Physikalische Chemie, Karlsruher Institut für Technologie (KIT) , Kaiserstr. 12 , 76131 Karlsruhe , Germany
| | - Julien Debailleul
- Institut für Physikalische Chemie, Karlsruher Institut für Technologie (KIT) , Kaiserstr. 12 , 76131 Karlsruhe , Germany
| | - Matthias Olzmann
- Institut für Physikalische Chemie, Karlsruher Institut für Technologie (KIT) , Kaiserstr. 12 , 76131 Karlsruhe , Germany
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6
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Prebiotic chemistry in neutral/reduced-alkaline gas-liquid interfaces. Sci Rep 2019; 9:1916. [PMID: 30760732 PMCID: PMC6374446 DOI: 10.1038/s41598-018-36579-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Accepted: 11/25/2018] [Indexed: 11/09/2022] Open
Abstract
The conditions for the potential abiotic formation of organic compounds from inorganic precursors have great implications for our understanding of the origin of life on Earth and for its possible detection in other environments of the Solar System. It is known that aerosol-interfaces are effective at enhancing prebiotic chemical reactions, but the roles of salinity and pH have been poorly investigated to date. Here, we experimentally demonstrate the uniqueness of alkaline aerosols as prebiotic reactors that produce an undifferentiated accumulation of a variety of multi-carbon biomolecules resulting from high-energy processes (in our case, electrical discharges). Using simulation experiments, we demonstrate that the detection of important biomolecules in tholins increases when plausible and particular local planetary environmental conditions are simulated. A greater diversity in amino acids, carboxylic acids, N-heterocycles, and ketoacids, such as glyoxylic and pyruvic acid, was identified in tholins synthetized from reduced and neutral atmospheres in the presence of alkaline aqueous aerosols than that from the same atmospheres but using neutral or acidic aqueous aerosols.
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7
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Kaur S, Sharma P. Radical pathways for the formation of non-canonical nucleobases in prebiotic environments. RSC Adv 2019; 9:36530-36538. [PMID: 35539032 PMCID: PMC9075218 DOI: 10.1039/c9ra08001e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Accepted: 11/04/2019] [Indexed: 11/21/2022] Open
Abstract
Due to the inability of canonical nucleobases (adenine, uracil, guanine and cytosine) to spontaneously form ribonucleosides and base pairs in free form in solution, RNA is believed to be preceded by a primitive information polymer (preRNA). The preRNA is proposed to contain non-canonical, heterocyclic bases that possess the above-mentioned capabilities. An extensive search for such candidate heterocycles has recently revealed that barbituric acid (BA), melamine (MM) and 2,4,6-triaminopyrimidine (TAP) have the capability to spontaneously form ribonucleosides and supramolecular assemblies that are held by Watson–Crick type hydrogen-bonded base pairs involving BA, MM, TAP and cyanuric acid (CA) heterocycles. However, despite this evidence, the prebiotic formation pathways of these heterocycles have not been fully explored. Further, for these heterocycles to interact and assemble into informational polymers under prebiotic conditions, it is expected that they should have formed in the proximity of each other. In this context, the present work employs density functional theory to propose the associated radical based formation pathways starting from cyanamide. Our pathways suggest that cyanamide, its derivatives (malonic acid and urea) and malononitrile can form BA, MM, CA and TAP in the presence of ammonia and hydroxyl radicals. In addition to originating from a common precursor, similarities in the highest reaction barriers (13 to 20 kcal mol−1) obtained for these pathways suggest that these heterocycles may likely form under similar conditions. Specifically, these pathways are relevant to high energy events such as meteoritic impact during the late heavy bombardment period on the early earth, which would have created conditions where radicals might have formed in reasonable concentrations. Overall, the present study emphasizes the importance of cyanamide in prebiotic heterocycle formation. The study explores radical-assisted formations of the nucleobase components of primitive genetics from cyanamide and related precursors in impact events.![]()
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Affiliation(s)
- Sarabjeet Kaur
- Computational Biochemistry Laboratory
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Purshotam Sharma
- Computational Biochemistry Laboratory
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
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8
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Jeilani YA, Ross B, Aweis N, Fearce C, Minh Hung H, Nguyen MT. Reaction Routes for Experimentally Observed Intermediates in the Prebiotic Formation of Nucleobases under High-Temperature Conditions. J Phys Chem A 2018; 122:2992-3003. [DOI: 10.1021/acs.jpca.7b11466] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yassin A. Jeilani
- Department of Chemistry and Biochemistry, Spelman College, 350 Spelman Lane, S.W., Box 1134, Atlanta, Georgia 30314, United States
- Department of Chemistry, College of Science, University of Hail, Hail, Saudi Arabia
| | - Brooke Ross
- Department of Chemistry and Biochemistry, Spelman College, 350 Spelman Lane, S.W., Box 1134, Atlanta, Georgia 30314, United States
| | - Nasrin Aweis
- Department of Chemistry and Biochemistry, Spelman College, 350 Spelman Lane, S.W., Box 1134, Atlanta, Georgia 30314, United States
| | - Chelesa Fearce
- Department of Chemistry and Biochemistry, Spelman College, 350 Spelman Lane, S.W., Box 1134, Atlanta, Georgia 30314, United States
| | - Huynh Minh Hung
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
| | - Minh Tho Nguyen
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
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9
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Menor-Salván C. From the Dawn of Organic Chemistry to Astrobiology: Urea as a Foundational Component in the Origin of Nucleobases and Nucleotides. PREBIOTIC CHEMISTRY AND CHEMICAL EVOLUTION OF NUCLEIC ACIDS 2018. [DOI: 10.1007/978-3-319-93584-3_4] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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10
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Almatarneh MH, Abu-Saleh AAAA, Elayan IA. Mechanistic and spectral investigation on the deamination of ammeline and ammelide. COMPUT THEOR CHEM 2017. [DOI: 10.1016/j.comptc.2017.08.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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11
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A step into the RNA world: Conditional analysis of hydrogel formation of adenosine 5'-monophosphate induced by cyanuric acid. Biosystems 2017; 162:53-58. [PMID: 28887177 DOI: 10.1016/j.biosystems.2017.09.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 09/01/2017] [Accepted: 09/02/2017] [Indexed: 11/21/2022]
Abstract
Nucleotide polymerization occurs by the nucleophilic attack of 3'-oxygen of the 3'-terminal nucleotide on the α-phosphorus of the incoming nucleotide 5'-triphosphate. The π-stacking of mononucleotides is an important factor for prebiotic RNA polymerization in terms of attaining the proximity of two reacting moieties. Adenosine and adenosine 5'-monophosphate (AMP) are known to form hydrogel in the presence of cyanuric acid at neutral pH. However, we observed that other canonical ribonucleotides did not gel under the same condition. The π-stacking-induced hydrogel formation of AMP was destroyed at pH 2.0, suggesting that the protonation of N at position 1 of adenine abolished hydrogen bonding with the NH of cyanuric acid and resulted in the deformation of the hexad of adenine and cyanuric acid. A liquid-like gel was formed in the case of adenosine with cyanuric acid and boric acid, whereas AMP caused the formation of a solid gel, implying that the negative charge inherent to AMP prevented the formation of esters of boric acid with the cis-diols of ribose. Cyanuric acid-driven oligomerizations of AMP might have been the first crucial event in the foundation of the RNA world.
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12
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Kaur S, Sharma P, Wetmore SD. Structural and electronic properties of barbituric acid and melamine-containing ribonucleosides as plausible components of prebiotic RNA: implications for prebiotic self-assembly. Phys Chem Chem Phys 2017; 19:30762-30771. [DOI: 10.1039/c7cp06123d] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
DFT calculations are employed to assess the fitness of barbituric acid and melamine to act as components of prebiotic RNA.
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Affiliation(s)
- Sarabjeet Kaur
- Computational Biochemistry Laboratory
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Purshotam Sharma
- Computational Biochemistry Laboratory
- Department of Chemistry and Centre for Advanced Studies in Chemistry
- Panjab University
- Chandigarh
- India
| | - Stacey D. Wetmore
- Department of Chemistry and Biochemistry
- University of Lethbridge
- Canada
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13
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Förstel M, Tsegaw YA, Maksyutenko P, Mebel AM, Sander W, Kaiser RI. On the Formation of N3H3Isomers in Irradiated Ammonia Bearing Ices: Triazene (H2NNNH) or Triimide (HNHNNH). Chemphyschem 2016; 17:2726-35. [DOI: 10.1002/cphc.201600414] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Marko Förstel
- Department of Chemistry; University of Hawaii; 2545 McCarthy Mall 96822 Honolulu HI USA
- W. M. Keck Research Laboratory in Astrochemistry; University of Hawaii; 2545 McCarthy Mall 96822 Honolulu HI USA
| | - Yetsedaw A. Tsegaw
- Lehrstuhl für Organische Chemie II; Ruhr Universität Bochum; 44780 Bochum Germany
| | - Pavlo Maksyutenko
- Department of Chemistry; University of Hawaii; 2545 McCarthy Mall 96822 Honolulu HI USA
- W. M. Keck Research Laboratory in Astrochemistry; University of Hawaii; 2545 McCarthy Mall 96822 Honolulu HI USA
| | - Alexander M. Mebel
- Department of Chemistry and Biochemistry; Florida International University; 11200 SW 8thStreet Miami FL 33199 USA
| | - Wolfram Sander
- Lehrstuhl für Organische Chemie II; Ruhr Universität Bochum; 44780 Bochum Germany
| | - Ralf I. Kaiser
- Department of Chemistry; University of Hawaii; 2545 McCarthy Mall 96822 Honolulu HI USA
- W. M. Keck Research Laboratory in Astrochemistry; University of Hawaii; 2545 McCarthy Mall 96822 Honolulu HI USA
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Jeilani YA, Williams PN, Walton S, Nguyen MT. Unified reaction pathways for the prebiotic formation of RNA and DNA nucleobases. Phys Chem Chem Phys 2016; 18:20177-88. [DOI: 10.1039/c6cp02686a] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reaction pathways for the prebiotic formation of nucleobases are complex and lead to the formation of a mixture of products.
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Affiliation(s)
- Yassin Aweis Jeilani
- Department of Chemistry and Biochemistry
- Spelman College
- Spelman Lane S.W
- Atlanta
- USA
| | - Phoenix N. Williams
- Department of Chemistry and Biochemistry
- Spelman College
- Spelman Lane S.W
- Atlanta
- USA
| | - Sofia Walton
- Department of Chemistry and Biochemistry
- Spelman College
- Spelman Lane S.W
- Atlanta
- USA
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15
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Jeilani YA, Fearce C, Nguyen MT. Acetylene as an essential building block for prebiotic formation of pyrimidine bases on Titan. Phys Chem Chem Phys 2015; 17:24294-303. [DOI: 10.1039/c5cp03247d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Prebiotic building blocks for the formation of biomolecules are important in understanding the abiotic origin of biomolecules.
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Affiliation(s)
| | - Chelesa Fearce
- Department Chemistry and Biochemistry
- Spelman College
- Atlanta
- USA
| | - Minh Tho Nguyen
- Department of Chemistry
- University of Leuven
- B-3001 Leuven
- Belgium
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