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2002 Progress Report: Forming Carbon-Carbon Bonds in Water and Other Alternative Media
EPA Grant Number: R828129Title: Forming Carbon-Carbon Bonds in Water and Other Alternative Media
Investigators: Li, Chao-Jun
Institution: Tulane University of Louisiana
EPA Project Officer: Karn, Barbara
Project Period: June 1, 2000 through May 31, 2003 (Extended to September 24, 2004)
Project Period Covered by this Report: June 1, 2001 through May 31, 2002
Project Amount: $310,000
RFA: Technology for a Sustainable Environment (1999)
Research Category: Pollution Prevention/Sustainable Development
Description:
Objective:The long-term objective of this research project is to develop various environmentally friendly chemical syntheses using water, liquid CO2, and ionic liquid as nonpolluting solvents. The specific objective during this funding period is to study new carbon-carbon bond formation reactions that do not use anhydrous organic solvent, avoids the use of protection-deprotections, is applicable to large-scale industry operation, and has a reduced impact on environment due to the use of catalytic amount of metal and/or in-process recycling.
Progress Summary:Metal-mediated carbon-carbon bond formation is one of the most important fundamental reactions in organic chemistry and is widely used in various chemical and pharmaceutical processes. Traditionally, they are conducted in anhydrous organic solvents, are air-sensitive, and are potentially explosive. The present study investigates the scope, mechanism, and synthetic application of metal-mediated reactions through the use of water solvent. During this period, we have investigated and succeeded metal-mediated carbon-carbon bond formations involving SP3 hybridized C-X bonds, SP2 hybridized C-X bonds, and SP hybridized C-X bonds. The method saves synthetic steps by avoiding many protection and deprotection processes and contributes to overall synthetic efficiency and a reduction in organic emission. Additional research is planned to transform the reaction into a catalytic process. Additionally, the uses of liquid CO2 and ionic liquid as nonpolluting solvent for carbon-carbon bond formations also have been investigated during this period. A Barbier-type reaction in liquid CO2 and a novel synthesis of tetrahydropyran derivatives have been synthesized in ionic liquids for the first time. These methods provided cleaner approaches for synthesizing complex pharmaceuticals (currently, the industry that generates the largest amount of waste/per Kg of products).
During the second budget year, we have further evaluated metal-mediated carbon-carbon bond formations and related reactions in the synthesis of C-glycoside-type natural products. Research activities have been focused on the syntheses of natural products (+)-bergenin. Substantial progresses have been made on the syntheses of all these biologically important compounds. We have developed a novel one-step process that can be used to generate tetrahydropyranols that will have important applications in the synthesis of C-glycoside natural products. We also have developed a palladium-catalyzed formation of carbon-carbon bonds in air and water. Such results have both theoretical and practical values.
During this year, 10 graduate students, 4 postdoctoral students, and 2 undergraduate students have benefited either directly or indirectly from the support of this project. These students have gained valuable experience in organic synthesis and structural characterizations.
During the first budget year, the principal investigator (PI) has further polished the short precourse, entitled "The World of Organic Chemistry." The course was scheduled before the regular organic chemistry text. At the end of the course, each student wrote an essay with the title: "Chemistry and Me." All the students were very enthusiastic about this part of the course with well-written essays. The PI also has added new experiments and variation to the public outreach program. The PI conducted two science demonstrations in a public elementary school. All the students were extremely interested in the demonstration and in chemistry. A graduate student also was involved in the outreach.
Future Activities:We will continue our work towards the project objectives. A major objective is to further greening such reactions in water, liquid CO2, and ionic liquids.
Journal Articles on this Report : 25 Displayed | Download in RIS Format
| Other project views: | All 50 publications | 25 publications in selected types | All 25 journal articles |
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Chen L, Li ZG, Li CJ. Indium-mediated domino reaction of nitroarenes with 2,3-dihydrofuran in water: an efficient synthesis of 1,2,3,4-tetrahydroquinoline derivatives. Synlett. 2003, Number: 5 (APR), Page: 732-734. |
R828129 (2002) |
not available |
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Huang TS, Li CJ. Palladium-catalyzed coupling of aryl halides with arylhalosilanes in air and water. Tetrahedron Letters 2002;43(3):403-405 |
R828129 (2002) |
not available |
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Huang T, Keh CCK, Li CJ. Synthesis of alpha-amino acid derivatives and amines via activation of simple alkyl halides by zinc in water. Chemical Communications 2002;(20):2440-2441 |
R828129 (2002) |
not available |
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Keh CCK, Namboodiri VV, Varma RS, Li CJ. Direct formation of tetrahydropyranols via catalysis in ionic liquid. Tetrahedron Letters 2002;43(28):4993-4996. |
R828129 (2002) |
not available |
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Keh CCK, Li CJ. Direct formation of 2,4-disubstituted tetrahydropyranols in water mediated by an acidic solid resin. Green Chemistry 2003;5(1):80-81 |
R828129 (2002) |
not available |
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Keh CCK, Wei CM, Li CJ. The Barbier-Grignard-type carbonyl alkylation using unactivated alkyl halides in water. Journal of the American Chemical Society 2003;125(14):4062-4063. |
R828129 (2002) |
not available |
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Li CJ. Developing metal-mediated and catalyzed reactions in air and water. Green Chemistry 2002;4(1):1-4 |
R828129 (2002) |
not available |
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Li CJ, Wei CM. Highly efficient grignard-type imine additions via C-H activation in water and under solvent-free conditions. Chemical Communications 2002;3:268-269. |
R828129 (2002) |
not available |
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Li CJ. Quasi-nature catalysis: Developing C-C bond formations catalyzed by late transition metals in air and water. Accounts of Chemical Research 2002;35(7):533-538 |
R828129 (2002) |
not available |
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Li HJ, Tian HY, Chen YJ, Wang D, Li CJ. Novel chiral gallium Lewis acid catalysts with semi-crown ligands for aqueous asymmetric Mukaiyama aldol reactions. Chemical Communications 2002;(24):2994-2995 |
R828129 (2002) |
not available |
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Venkatraman S, Huang T, Li CJ. Carbon-carbon bond formation via palladium-catalyzed reductive coupling of aryl halides in air and water. Advanced Synthesis & Catalysis 2002;344(3-4):399-405 |
R828129 (2002) |
not available |
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Viswanathan GS, Wang MW, Li CJ. A highly regioselective synthesis of polysubstituted naphthalene derivatives through gallium trichloride catalyzed alkyne-aldehyde coupling. Angewandte Chemie-International Edition 2002;41(12):2138-2141 |
R828129 (2002) |
not available |
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Viswanathan GS, Li CJ. A highly stereoselective, novel coupling reaction between alkynes and aldehydes. Tetrahedron Letters 2002;43(9):1613-1615 |
R828129 (2002) |
not available |
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Viswanathan GS, Li CJ. Synthesis of naphthalene derivatives via a novel gallium trichloride catalyzed cross-coupling of epoxides with alkynes. Synlett 2002;(9):1553-1555 |
R828129 (2002) |
not available |
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Wang MW, Li CJ. Aldol reaction via in situ olefin migration in water. Tetrahedron Letters 2002;43(19):3589-3591. |
R828129 (2002) |
not available |
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Wang MW, Yang XF, Li CJ. Ruthenium-catalyzed tandem olefin migration/aldol and Mannich-type reactions in water and protic solvents. European Journal of Organic Chemistry 2003;(6):998-1003 |
R828129 (2002) |
not available |
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Wang ZY, Yuan SZ, Li CJ. Gallium-mediated allylation of carbonyl compounds in water. Tetrahedron Letters 2002;43(30):5097-5099. |
R828129 (2002) |
not available |
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Wei CM, Li CJ. Grignard type reaction via C-H bond activation in water. Green Chemistry 2002;4(1):39-41 |
R828129 (2002) |
not available |
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Wei CM, Li CJ. Highly enantioselective catalytic direct addition of alkynes to imines in water. Journal of American Chemical Society 2002;124(20):5638-5639. |
R828129 (2002) |
not available |
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Wei CM, Li CJ. Enantioselective direct-addition of terminal alkynes to imines catalyzed by copper(I)pybox complex in water and in toluene. Journal of the American Chemical Society 2002;124(20):5638-5639 |
R828129 (2002) |
not available |
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Xia WS, Schmehl RH, Li CJ, Mague JT, Luo CP, Guldi DM. Chemosensors for lead(II) and alkali metal ions based on self-assembling fluorescence enhancement (SAFE). Journal of Physical Chemistry B 2002;106(4):833-843 |
R828129 (2002) |
not available |
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Yang XF, Wang MW, Varma RS, Li CJ. Aldol- and Mannich-type reactions via in situ olefin migration in ionic liquid. Organic Letters 2003;5(5):657-660. |
R828129 (2002) |
not available |
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Zhang JH, Wei CM, Li CJ. Cu(I)Br mediated coupling of alkynes with N-acylimine and N-acyliminium ions in water. Tetrahedron Letters 2002;43(33):5731-5734. |
R828129 (2002) |
not available |
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Zhang JH, Li CJ. Indium chloride catalyzed cross-coupling of dihydropyran and dihydrofurans with anilines in water. Journal of Organic Chemistry 2002;67(11):3969-3971. |
R828129 (2002) |
not available |
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Zhang JH, Li CJ. InCl3-catalyzed domino reaction of aromatic amines with cyclic enol ethers in water: A highly efficient synthesis of new 1,2,3,4-tetrahydroquinoline derivatives. Journal of Organic Chemistry 2002;67(11):3969-3971 |
R828129 (2002) |
not available |
water, metals, chemicals, solvents, organics, green chemistry, alternatives, sustainable development, clean technology, waste reduction, waste minimization, environmental chemistry, industry, petroleum, chemical, pharmaceutical. , Air, Sustainable Industry/Business, Scientific Discipline, RFA, Technology for Sustainable Environment, Sustainable Environment, Chemical Engineering, air toxics, Environmental Chemistry, treatment, anhydrous organic solvents, chemical waste, cleaner production, environmentally-friendly chemical synthesis, waste reduction, green chemistry, organic chemicals, waste minimization, environmentally benign solvents, carbon bonds, pharmaceutical industry, water-based solvent
Relevant Websites:
http://www.tulane.edu/~chemstry/Li.html 
Progress and Final Reports:
Original Abstract