Solvent-Free Conditions (solvent-free + condition)

Distribution by Scientific Domains
Distribution within Chemistry


Selected Abstracts


ChemInform Abstract: A Convenient Synthesis of Pyrroles Catalyzed by Acidic Resin under Solvent-Free Condition.

CHEMINFORM, Issue 43 2010
Shi Zhen Yuan
Abstract The catalyst corresponds to Amberlite 200 and Lewatit SP-210 and can be recycled on treatment with hydrochloric acid. [source]


ChemInform Abstract: One-Pot Three Components Synthesis of O-Acetylcyanohydrins with TMSCN, Acetic Anhydride and Carbonyl Compounds under Solvent-Free Condition.

CHEMINFORM, Issue 46 2009
Santosh T. Kadam
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: N,N-Dimethylamino-Functionalized Basic Ionic Liquid Catalyzed One-Pot Multicomponent Reaction for the Synthesis of 4H-Benzo[b]pyran Derivatives under Solvent-Free Condition.

CHEMINFORM, Issue 31 2009
Lu Chen
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Microwave-Assisted Synthesis of New Pyrimido[4,,5,:4,5]thiazolo[3,2-a]benzimidazol-4(3H)-one Derivatives in Solvent-Free Condition.

CHEMINFORM, Issue 22 2008
A. Davoodnia
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


Heteropolyacid Encapsulated into Mesoporous Silica Framework for an Efficient Preparation of 1,1-Diacetates from Aldehydes under a Solvent-Free Condition.

CHEMINFORM, Issue 9 2007
Jianmin Wang
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]


Iodine-Catalyzed Conjugate Addition of Mercaptans to ,,,-Unsaturated Carboxylic Acids under Solvent-Free Condition.

CHEMINFORM, Issue 26 2006
Shijay Gao
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]


A Cheap, Simple, and Versatile Method for Acetylation of Alcohols and Phenols and Selective Deprotection of Aromatic Acetates under Solvent-Free Condition.

CHEMINFORM, Issue 31 2005
Fatemeh Rajabi
Abstract For Abstract see ChemInform Abstract in Full Text. [source]


ZnO/CH3COCl: A New and Highly Efficient Catalyst for Dehydration of Aldoximes into Nitriles under Solvent-Free Condition.

CHEMINFORM, Issue 31 2005
Mona Hosseini Sarvari
No abstract is available for this article. [source]


One-Pot Synthesis of Benzo[e]1,4-oxathiepin-5-ones under Solvent-Free Condition via Self-Promoted Thiolysis of 1,2-Epoxides.

CHEMINFORM, Issue 20 2005
Francesco Fringuelli
Abstract For Abstract see ChemInform Abstract in Full Text. [source]


Synthesis of Ionic Liquid Functionalized SBA-15 Mesoporous Materials as Heterogeneous Catalyst toward Knoevenagel Condensation under Solvent-Free Conditions

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 15 2006
Yong Liu
Abstract 1-Methyl-3-propylimidazolium chloride (MPImCl) and 1-propylpyridinium chloride (PPyCl) ionic liquid functionalized SBA-15 mesoporous materials were synthesized and used as heterogeneous catalysts in Knoevenagel reactions with excellent yields and reusability. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006) [source]


Preparation of Triaryl- and Triheteroarylmethanes under Ytterbium Triflate Catalysis and Solvent-Free Conditions

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 8 2009
Salvatore Genovese
Abstract Triaryl- and triheteroarylmethanes have been synthesized in very good yield under solvent-free conditions from differently substituted aldehydes and 2-methylfuran or methoxybenzene in the presence of Yb(OTf)3 as catalyst. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) [source]


A New, Mild, General and Efficient Route to Aryl Ethyl Carbonates in Solvent-Free Conditions Promoted by Magnesium Perchlorate

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 19 2006
Giuseppe Bartoli
Abstract A new, general and mild method for the direct synthesis of aryl and alkyl ethyl carbonates promoted by a Lewis acid is reported. The reaction proceeds smoothly with diethyl dicarbonate in the presence of Mg(ClO4)2, a specific activator of 1,3-dicarbonyl compounds, and shows general applicability. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006) [source]


Polystyrene-Supported 1,5,7-Triazabicyclo[4.4.0]dec-5-ene as an Efficient and Reusable Catalyst for the Thiolysis of 1,2-Epoxides under Solvent-Free Conditions

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 5 2006
Francesco Fringuelli
Abstract Polystyrene-supported 1,5,7-triazabicyclo[4.4.0]dec-5-ene (PS-TBD) is an effective basic catalyst for the thiolysis of the 1,2-epoxides 1a,e by the aryl- and alkyl-substituted thiols 2A,E under solvent-free conditions while its activity is remarkably reduced in MeCN. The reactions are totally anti -diastereoselective and generally highly C-, regioselective. The corresponding hydroxy sulfides have been isolated in excellent yields and the catalyst has been easily recovered and reused with no loss in terms of efficiency and selectivity of the process. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006) [source]


Lithium Perchlorate-Catalyzed Three-Component Coupling: A Facile and General Method for the Synthesis of ,-Aminophosphonates under Solvent-Free Conditions

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 23 2003
Najmedin Azizi
Abstract A simple, efficient, and general method has been developed for the synthesis of ,-aminophosphonates in the presence of solid lithium perchlorate under solvent-free conditions. Thus secondary and tertiary ,-aminophosphonates were synthesized relatively quickly in good yields at room temperature. ( Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003) [source]


Peroxide/Potassium Iodide Redox Systems for in situ Oxyiodination of Organic Compounds under Liquid-Phase and Solvent-Free Conditions

HELVETICA CHIMICA ACTA, Issue 2 2010
Gattu Venkateshwarlu
Abstract Iodination of certain aromatic amines and phenols are triggered by the oxidation of KI by peroxy compounds such as tert -butyl hydroperoxide (tBuOOH) under liquid-phase and solvent-free conditions by grinding the reactants in a mortar with a pestle. The reactions afforded corresponding iodo derivatives in good yield with high regioselectivity (Table,1). [source]


Pyrrolidine-Camphor Derivative as an Organocatalyst for Asymmetic Michael Additions of ,,,-Disubstituted Aldehydes to ,-Nitroalkenes: Construction of Quaternary Carbon-Bearing Aldehydes under Solvent-Free Conditions

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 9 2009
Chihliang Chang
Abstract A novel pyrrolidine-camphor organocatalyst 3 was designed, synthesized and proven to be an efficient catalyst for the asymmetric Michael reaction. Treatment of ,,,-disubstituted aldehydes with ,-nitroalkenes in the presence of 20,mol% organocatalyst 3 and 20,mol% benzoic acid under solvent-free conditions provided the desired Michael product possessing an all-carbon quaternary center with high chemical yields (up to 99% yield) and high levels of enantioselectivities (up to 95% ee). [source]


Water versus Solvent-Free Conditions for the Enantioselective Inter- and Intramolecular Aldol Reaction Employing L -Prolinamides and L -Prolinethioamides as Organocatalysts

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 7-8 2009
Diana Alma
Abstract Organocatalysts 1, derived from L -proline and (1S,2R)- cis -1-aminoindan-2-ol or (R)-1-aminoindane, are evaluated as promoters in the direct asymmetric aldol reaction between ketones and aromatic aldehydes in the presence of water and under solvent-free reaction conditions. L -Prolinethioamides 1c and 1d exhibited higher enantioselectivity than the corresponding prolinamides 1a and 1b in the model aldol reaction between cyclohexanone and 4-nitrobenzaldehyde in the presence of 4-nitrobenzoic acid as cocatalyst. In particular, L -prolinethioamide 1d (5,mol%), derived from L -proline and (R)-1-aminoindane, is shown as the most efficient organocatalyst studied promoting the direct aldol reaction of cycloalkyl, alkyl, and ,-functionalized ketones with aromatic aldehydes in the presence of water and under solvent-free reaction conditions employing only 2 equivalents of nucleophile. Generally, anti -aldol products are obtained in high yields and excellent diastereo- and enantioselectivities (up to >98/2 anti/syn, up to 98% ee). Solvent-free conditions give slightly higher dr and ee than using water as solvent. In addition, organocatalyst 1d can be easily recovered by extractive work-up and reused. Prolinethioamide 1d (5 mol%) in combination with 4-NO2C6H4CO2H (5 mol%) is also a very effective organocatalytic system for the asymmetric solvent-free intramolecular Hajos,Parrish,Eder,Sauer,Wiechert reaction with comparable or higher levels of enantioselectivity (up to 88% ee) to other reported catalysts in organic solvents. [source]


ChemInform Abstract: Simple and Efficient Synthesis of 2-Aryl-2,3-dihydroquinolin-4(1H)-ones Using Silica Chloride as a New Catalyst under Solvent-Free Conditions.

CHEMINFORM, Issue 40 2010
M. Muthukrishnan
Abstract Title compounds (II) are also obtained from a similar one-pot reaction between 2-aminoacetophenone and aromatic aldehydes, but yields are only poor. [source]


ChemInform Abstract: Broensted Acidic Ionic Liquid as an Efficient and Reusable Catalyst for Synthesis of 14-Aryl- or 14-Alkyl-14H-dibenzo[a,j]xanthenes under Solvent-Free Conditions.

CHEMINFORM, Issue 29 2010
Abdol R. Hajipour
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Chemoselective Synthesis of 1,1-Diacetates from Aldehydes Using Anhydrous Cobalt(II) Bromide under Solvent-Free Conditions.

CHEMINFORM, Issue 26 2010
Gangadhar A. Meshram
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Al(HSO4)3/Silica Gel as a Novel Catalytic System for the Ring Opening of Epoxides with Thiocyanate Anion under Solvent-Free Conditions.

CHEMINFORM, Issue 26 2010
Ali Reza Kiasat
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: TiO2 as a Reusable Catalyst for the One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones under Solvent-Free Conditions.

CHEMINFORM, Issue 26 2010
Mohammad Zaman Kassaee
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: An Efficient One-Pot Synthesis of 3-Aryl-1,2,4-oxadiazol-5-amines under Solvent-Free Conditions.

CHEMINFORM, Issue 25 2010
Mehdi Adib
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Approach to Synthesis of ,-Enamino Ketones and Pyrroles Catalyzed by Gallium(III) Triflate under Solvent-Free Conditions.

CHEMINFORM, Issue 15 2010
Jiuxi Chen
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Efficient and Facile Synthesis of 3-Amino-1-aryl-9H-fluorene-2,4-dicarbonitrile under Solvent-Free Conditions.

CHEMINFORM, Issue 13 2010
Liangce Rong
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Microwave Assisted Synthesis of 1,3,4-Oxadiazolyl 1,8-Naphthyridines under Solvent-Free Conditions Using Solid Support.

CHEMINFORM, Issue 7 2010
K. Mogilaiah
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Broensted Acidic Ionic Liquid as an Efficient and Reusable Catalyst for One-Pot Synthesis of 1-Amidoalkyl 2-Naphthols under Solvent-Free Conditions.

CHEMINFORM, Issue 1 2010
Abdol R. Hajipour
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Cross-Aldol Condensation of Cycloalkanones and Aromatic Aldehydes in the Presence of Nanoporous Silica-Based Sulfonic Acid (SiO2,Pr,SO3H) under Solvent-Free Conditions.

CHEMINFORM, Issue 51 2009
Ghodsi Mohammadi Ziarani
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Microwave-Assisted Chemoselective Copper-Catalyzed Amination of o-Chloro and o-Bromobenzoic Acids Using Aromatic Amines under Solvent-Free Conditions.

CHEMINFORM, Issue 50 2009
Yaghoub Sarrafi
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


ChemInform Abstract: Generation of Pd Nanoparticles in situ from PdCl2 in TBAF: An Efficient and Reusable Catalytic System for the Suzuki,Miyaura Reaction under Ligand- and Solvent-Free Conditions.

CHEMINFORM, Issue 47 2009
Liming Tao
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]