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Photochemical intramolecular amination for the synthesis of heterocycles

2 hours 53 min ago

Green Chem., 2017, Advance Article
DOI: 10.1039/C7GC02261A, CommunicationShawn Parisien-Collette, Corentin Cruche, Xavier Abel-Snape, Shawn K. Collins
Polycyclic heterocycles can be formed in good to excellent yields via photochemical conversion of the corresponding substituted aryl azides under irradiation with purple LEDs in a continuous flow reactor.
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POTASSIUM FERTILIZER VIA HYDROTHERMAL ALTERATION OF K FELDSPAR ORE

Mon, 09/25/2017 - 12:45
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02633A, PaperDavide Ciceri, Marcelo De Oliveira, Antoine Allanore
Fertilizers ensure the necessary agricultural yields to feed an increasing world population. Augmenting fertilizer use conflicts with environmental concerns such as eutrophication and soil pollution, as well as with limited...
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Biocatalytic synthesis of chiral cyclic [gamma]-oxoesters by sequential C-H hydroxylation, alcohol oxidation and alkene reduction

Mon, 09/25/2017 - 05:32
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02215H, PaperElisabetta Brenna, Michele Crotti, Francesco Gatti, Daniela Monti, Fabio Parmeggiani, Andrea Pugliese, Francesca Tentori
A three-step biocatalytic procedure is described for the conversion of methyl and ethyl cyclopentene- and cyclohexenecarboxylates into both the enantiomers of the corresponding chiral [gamma]-oxoesters, which are useful building blocks...
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Photocatalytic coupling of amines to imidazoles using Mo-ZnIn2S4 catalyst

Fri, 09/22/2017 - 14:32
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01728F, PaperMin Wang, Lihua Li, Jianmin Lu, Nengchao Luo, Xiaochen Zhang, Feng Wang
Substituted imidazoles are traditionally synthesized by co-condensation of multi-feedstocks. Herein, we report a new route for the synthesis of substituted imidazoles via photocyclization of readily available amines at room temperature....
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Synthesis of Isosorbide: Overview of challenging reactions

Fri, 09/22/2017 - 07:27
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01912B, Tutorial ReviewCorentin dussenne, Thierry Delaunay, Vincent Wiatz, Herve Wyart, Isabelle Suisse, Mathieu Sauthier
Isosorbide is a diol derived from sorbitol and obtained through a dehydration reaction that has raised much interest in literature over the past decades. Thus, this platform chemical is a...
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Scalable and super-stable exfoliation of graphitic carbon nitride in biomass-derived [gamma]-valerolactone: Enhanced catalytic activity for alcoholysis and cycloaddition of epoxides with CO2

Thu, 09/21/2017 - 11:06
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02583A, CommunicationZhimin Xue, Feijie Liu, Jingyun Jiang, Jinfang Wang, Tiancheng Mu
Biomass-derived [gamma]-valerolactone (GVL) could exfoliate bulk g-C3N4 to form a super-stable dispersion of few-layer g-C3N4 nanosheets with a high concentration of up to 0.8 mg mL-1 due to the polarity...
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A practicable process for lignin color reduction: fractionation of lignin using methanol/water as solvent

Thu, 09/21/2017 - 11:06
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01974B, PaperHui Zhang, Youcan Bai, Boming Yu, Xinxin Liu, Fangeng Chen
In order to expand the application scales of industrial lignin, a nonchemical-reaction color reduction method was carried out. The eucalyptus kraft lignin was fractionated using methanol/water as solvent and two...
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Integrated strategy for catalytic co-production of jet fuel range alkenes, tetrahydrofurfuryl alcohol, and 1,2-pentanediol from lignocellulosic biomass

Thu, 09/21/2017 - 10:05
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02368E, PaperJaewon Byun, Jeehoon Han
This study presents an integrated strategy for catalytic co-production of jet fuel range alkenes (JFA), tetrahydrofurfuryl alcohol (THFA), and 1,2-pentanediol (1,2-PeD) from lignocellulosic biomass which consists of cellulose (C6), hemicellulose...
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Selective conversion of bio-derived ethanol to renewable BTX over Ga-ZSM-5

Thu, 09/21/2017 - 09:04

Green Chem., 2017, 19,4344-4352
DOI: 10.1039/C7GC01188A, PaperZhenglong Li, Andrew W. Lepore, Mariam F. Salazar, Guo Shiou Foo, Brian H. Davison, Zili Wu, Chaitanya K. Narula
The exchanged Ga(III) sites are the active sites for promoting BTX formation during ethanol conversion.
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Bio-based 1,3-diisobutyl imidazolium hydrogen oxalate [iBu2IM](HC2O4) as CO2 shuttle

Thu, 09/21/2017 - 05:01

Green Chem., 2017, Advance Article
DOI: 10.1039/C7GC02167D, PaperG. de Robillard, A. H. Fournier, H. Cattey, C. H. Devillers, J. Andrieu
Biobased imidazolium hydrogen oxalate, hydrogen carbonate and acetate are prepared from biosourced L-valine, oxalic acid, glyoxal, and act as CO2 shuttle.
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Highly Stable Ru/LaCO3OH Catalyst Consisting of Support-coated Ru Nanoparticles in Aqueous-Phase Hydrogenolysis Reactions

Tue, 09/19/2017 - 00:15
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02414B, PaperBolong Li, Lulu Li, Chen Zhao
Hydrothermal reduction under aqueous conditions is widely used to convert biomass into more valuable products. However, the harsh conditions inherent in the process can irreversibly alter the intrinsic structure of...
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Bio-based amines through sustainable heterogeneous catalysis

Mon, 09/18/2017 - 13:06
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02299A, Critical ReviewMichiel Pelckmans, Tom Renders, Stijn Van de Vyver, Bert F Sels
The production of amines from biomass is a growing field of interest. Particularly the amination of bio-based alcohols receives a lot of attention. In this review, we discuss recent progress...
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New Catalyst with Multiple Active Sites for Selective Hydrogenolysis of Cellulose to Ethylene Glycol

Mon, 09/18/2017 - 13:06
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02122D, PaperMohamed Hamdy, Murad Eissa, sherif keshk
Three different metals are successfully incorporated into TUD-1 mesoporous siliceous material for the first time. One-pot synthesis procedure was applied to incorporate isolated Al3+, nanoparticles of WO3, and nanoaprticles of...
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Phloretic acid as an alternative to the phenolation of aliphatic hydroxyls for the elaboration of polybenzoxazine

Mon, 09/18/2017 - 13:06
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02348K, PaperAcerina Trejo-Machin, Pierre Verge, Laura Puchot, Robert Quintana
3-(4-hydroxyphenyl)propanoic acid, so-called phloretic acid (PA), is a naturally occurring phenolic compound which can be produced from the hydrogenation of p-coumaric acid or synthesized from phloretin, a by-product of apple...
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Mid-chain carboxylic acids by catalytic refining of microalgae oil

Fri, 09/15/2017 - 09:23

Green Chem., 2017, Advance Article
DOI: 10.1039/C7GC01484H, PaperJulia Zimmerer, Lara Williams, Dennis Pingen, Stefan Mecking
Microalgae oil serves as a feedstock for a biorefinery approach to mid-chain (di-) carboxylic acid esters via cross-metathesis and isomerizing alkoxycarbonylation.
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Water excellent solvent for the synthesis of bifunctionalized cyclopentenones from furfural

Fri, 09/15/2017 - 09:23
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02303K, PaperMonica Nardi, Paola Costanzo, Antonio De Nino, Maria Luisa Di Gioia, Fabrizio Olivito, Giovanni Sindona, Antonio Procopio
Chiral cyclopentenones are important precursors in the asymmetric synthesis of target molecules. In particular, C-2 amino cyclopentenones could be utilised as intermediates towards antitumor natural products. On the basis of...
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Bio-based N-alkyl-2-pyrrolidones by Pd-catalyzed reductive N-alkylation and decarboxylation of glutamic acid

Fri, 09/15/2017 - 09:23
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC01829K, PaperFree De Schouwer, Sander Adriaansen, Laurens Claes, Dirk E. De Vos
Environmental regulations boost the search for new safer and less toxic bio-based solvents to replace controversial high-boiling solvents such as N-methyl-2-pyrrolidone and N,N-dimethylformamide in the chemical industry. Recently, N-alkyl-2-pyrrolidones and...
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Conversion of HMF to Methyl Cyclopentenolone by the Pd/Nb2O5 and Ca-Al Catalysts via Two-steps Procedure

Thu, 09/14/2017 - 12:09
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02310C, PaperYing Duan, Min Zheng, Dong-Mi Li, Dongsheng Deng, Lufang Ma, Yanliang Yang
The catalytic conversion of HMF to 2-hydroxy-3-methyl-2-cyclopenten-1-one (MCP), which was a valuable edible essence traditionally obtained from adipinic acid, was achieved with 58% isolated yield. This procedure contained two steps:...
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Microwave-Assisted Hydrothermal Selective Dissolution and Utilisation of Hemicellulose in Phyllostachys heterocycla cv. pubescens

Thu, 09/14/2017 - 09:09
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02300F, PaperYiping Luo, Jiajun Fan, Vitaliy L. Budarin, Changwei Hu, James Clark
A green process for the microwave-assisted hydrothermal selective dissolution and utilisation of hemicellulose in Phyllostachys heterocycla cv. Pubescens (shortened to pubescens) was developed. The process facilitated the efficient dissolution of...
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Dimethyldioxirane (DMDO) as a valuable oxidant for the synthesis of polyfunctional aromatic imidazolium monomers bearing epoxides.

Thu, 09/14/2017 - 08:08
Green Chem., 2017, Accepted Manuscript
DOI: 10.1039/C7GC02372C, CommunicationCharline Chardin, Jacques Henri Rouden, Sebastien Livi, Jerome Baudoux
Conventional organic salts represent a new paradigm in many areas of research. Despite their great potential, an improvement of their physicochemical properties requires the chemical modification of their intrinsic structure....
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