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Conference Report: Dream Reactions - Synthesis and Processes for Sustainable Chemistry
29 August 2008
Read Axel Jacobi von Wangelin's report on this meeting held recently in Aachen
Propylene oxide gets a green makeover
18 August 2008
An industrially important compound is made in a more environmentally conscious way
Green Chemistry celebrates 10 years of publishing
10 July 2008
An event to celebrate the 10th year of Green Chemistry was held at the Green Chemistry & Engineering conference
Contents list for Green Chemistry, issue 9, 2008
Front cover
Green Chem., 2008, 10, 897
DOI: 10.1039/b813950b
Contents and Chemical Technology
Green Chem., 2008, 10, 899
DOI: 10.1039/b813951m
Communications
Green synthesis of 1–2 nm gold nanoparticles stabilized by amine-terminated ionic liquid and their electrocatalytic activity in oxygen reduction
Zhijuan Wang, Qixian Zhang, Daniel Kuehner, Ari Ivaska and Li Niu,
Green Chem., 2008, 10, 907
DOI: 10.1039/b806453a
Stable gold nanoparticles with average size 1.7 nm were synthesized via a simple and green method using an amine-terminated ionic liquid as both reductant and stabilizer. The obtained gold nanoparticles showed enhanced electrocatalytic activity and high stability.
[
-C5H5N(CH2)15CH3]3[PW4O32]/H2O2/ethyl acetate/alkenes: a recyclable and environmentally benign alkenes epoxidation catalytic system
Yong Ding, Wei Zhao, Hui Hua and Baochun Ma,
Green Chem., 2008, 10, 910
DOI: 10.1039/b808404a
A halide-free reaction-controlled phase transfer catalytic system for epoxidation of alkenes was reported. The epoxidation of alkenes was successfully catalyzed by a recyclable and environmentally benign catalytic system: [-C5H5N(CH2)15CH3]3[PW4O32]/H2O2/ethyl acetate/olefin.
Highly atom efficient aluminium triflate catalysed acetal formation
D. Bradley G. Williams and Michelle C. Lawton,
Green Chem., 2008, 10, 914
DOI: 10.1039/b805748f
Al(OTf)3 at low concentration catalyses remarkably efficient acetal formations in high yields at room temperature using only 1.2 equivalents of an orthoester, and is readily recyclable.
Papers
Solubility of fluorinated compounds in a range of ionic liquids. Cloud-point temperature dependence on composition and pressure
Rui Ferreira, Marijana Blesic, Joana Trindade, Isabel Marrucho, José N. Canongia Lopes and Luís Paulo N. Rebelo,
Green Chem., 2008, 10, 918
DOI: 10.1039/b805902k
Ionic liquids and fluorinated organic molecules are perceived as relatively benign media. Blending them poses very interesting challenges both from the theoretical and the applied chemistry points of view.
High-pressure phase behavior of ternary mixtures with ionic liquids, part I: the system bmim[BF4]+4-isobutylacetophenone + CO2
Eliane Kühne, Geert-Jan Witkamp and Cor J. Peters,
Green Chem., 2008, 10, 929
DOI: 10.1039/b801362d
The influence of CO2 pressure on the miscibility of the ternary system bmim[BF4] + 4-isobutylacetophenone + CO2 is presented. An increase in CO2 composition gradually reduces the extension and influences the location of the one-phase liquid region, finally resulting in its complete disappearance.
One-pot green synthesis of propylene oxide using in situ generated hydrogen peroxide in carbon dioxide
Qunlai Chen and Eric J. Beckman,
Green Chem., 2008, 10, 934
DOI: 10.1039/b803847c
Propylene oxide was synthesized using in situ generated hydrogen peroxide in carbon dioxide (supercritical or liquid) with the addition of small amounts of polar co-solvent. Side reactions were effectively suppressed by using a selected inhibitor.
Aqueous system for the improved hydrogenation of phenol and its derivatives
Yizhi Xiang, Lei Ma, Chunshan Lu, Qunfeng Zhang and Xiaonian Li,
Green Chem., 2008, 10, 939
DOI: 10.1039/b803217c
An aqueous reaction system, in which complete aqueous miscibility of phenol is achieved, separation of the products from water is simplified, and the recovered aqueous solvent could be reused.
Thermophysical properties, low pressure solubilities and thermodynamics of solvation of carbon dioxide and hydrogen in two ionic liquids based on the alkylsulfate anion
Johan Jacquemin, Pascale Husson, Vladimir Majer, Agilio A.H. Padua and Margarida F. Costa Gomes,
Green Chem., 2008, 10, 944
DOI: 10.1039/b802761g
The solubility of carbon dioxide and hydrogen in two 1-alkyl-3-methylimidazolium alkylsulfates are presented and compared to that obtained for other ionic liquids.
Sulfonated polypyrrole nanospheres as a solid acid catalyst
Xiaoning Tian, Fabing Su and X. S. Zhao,
Green Chem., 2008, 10, 951
DOI: 10.1039/b804743j
The prepared sulfonated polypyrrole (SPNs) and carbonized polypyrrole nanosphere (SCPNs) sulfonic acid catalysts show high catalytic activity and good recyclability. This preparation shows a new way to find alternative solid acid catalysts.
Aqueous sol-gel routes to bio-composite capsules and gels
Namia Benmouhoub, Nicolas Simmonet, Nouria Agoudjil and Thibaud Coradin,
Green Chem., 2008, 10, 957
DOI: 10.1039/b806313c
Aqueous silicates can be associated with agarose and carboxymethylcellulose to obtain biocomposites with improved stability and/or controlled diffusion properties following a solgel route that complies with Green Chemistry principles.
Development of micro- and nano-porous composite materials by processing cellulose with ionic liquids and supercritical CO2
Costas Tsioptsias, Apostolis Stefopoulos, Ioannis Kokkinomalis, Lambrini Papadopoulou and Costas Panayiotou,
Green Chem., 2008, 10, 965
DOI: 10.1039/b803869d
Combination of ionic liquids and supercritical carbon dioxide to produce porous cellulose and cellulose composite materials.
A green protocol for synthesis of benzo-fused N,S-, N,O- and N,N-heterocycles in water
Qing-Yi Zhang, Bo-Kai Liu, Wan-Qin Chen, Qi Wu and Xian-Fu Lin,
Green Chem., 2008, 10, 972
DOI: 10.1039/b806960c
A fast and efficient protocol which is associated with readily available starting materials, mild conditions, excellent yields, and a broad range of the products in synthetic chemistry, was established for synthesis of benzo-fused heterocycles in water under catalyst-free conditions.
Rapid and convenient laboratory method for the preparation of p-tert-butylcalix[4]arene using microwave irradiation
Masafumi Takagaki, Asao Hosoda, Hajime Mori, Yasuhito Miyake, Keiichi Kimura, Hisaji Taniguchi and Eisaku Nomura,
Green Chem., 2008, 10, 978
DOI: 10.1039/b801715h
Rapid preparation of p-tert-butylcalix[4]arene using microwave irradiation was studied and p-tert-butylcalix[4]arene was obtained as a pure form in modest yield with shortening the reaction time from hours to minutes.
A revision for the synthesis of 
-enaminones in solvent free conditions: efficacy of different supported heteropoly acids as active and reusable catalysts
Ezzat Rafiee, Mohammad Joshaghani, Sara Eavani and Solmaz Rashidzadeh,
Green Chem., 2008, 10, 982
DOI: 10.1039/b803249a
Catalytic performance of different supported heteropoly acids for synthesis of -enaminones and -enamino esters in solvent and solvent free conditions has been investigated.
Potential green fungicide: 16-oxo-1-oxa-4-azoniacyclohexadecan-4-ium tetrafluoroborate
Yanhong Dong, Xiaomei Liang, Huizhu Yuan, Shuhua Qi, Fuheng Chen and Daoquan Wang,
Green Chem., 2008, 10, 990
DOI: 10.1039/b805797d
16-Oxo-1-oxa-4-azoniacyclohexadecan-4-ium tetrafluoroborate ( 2a) was synthesized as a safe to human beings and low toxicological potential fungicide by a green process.
A simple and eco-friendly approach for the synthesis of 2-imino and 2-oxo-2H-chromene-3-carboxamides
Fernanda Proença and Marta Costa,
Green Chem., 2008, 10, 995
DOI: 10.1039/b807892k
New 2-imino-2H-chromene-3-carboxamides were synthesized by the Knoevenagel condensation of salicylaldehyde derivatives and N-substituted cyanoacetamides. Addition of aqueous HCl led to the formation of 2-oxo-2H-chromene-3-carboxamides.
Hydroxyapatite-supported palladium (0) as a highly efficient catalyst for the Suzuki coupling and aerobic oxidation of benzyl alcohols in water
Navjot Jamwal, Monika Gupta and Satya Paul,
Green Chem., 2008, 10, 999
DOI: 10.1039/b802135j
Hydroxyapatite-supported palladium (0) catalyst was prepared and employed for the Suzuki reaction and aerobic oxidation of benzyl alcohols in water.
Improved chemoselective, ecofriendly conditions for the conversion of primary alkyl halides into nitroalkanes under PEG400
Roberto Ballini, Luciano Barboni and Alessandro Palmieri,
Green Chem., 2008, 10, 1004
DOI: 10.1039/b805985c
Treatment of primary alkyl halides with NaNO2 at room temperature in PEG400, as an ecofriendly solvent, allows the chemoselective formation of primary nitroalkanes.
Back matter
Green Chem., 2008, 10, 1007
DOI: 10.1039/b813953a
Back cover
Green Chem., 2008, 10, 1011
DOI: 10.1039/b813954g
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