Special Issue "Phase-Transfer Catalysts"

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A special issue of Catalysts (ISSN 2073-4344).

Deadline for manuscript submissions: closed (31 December 2014)

Special Issue Editors

Guest Editor
Dr. Domenico Albanese (Website)

Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
Interests: phase transfer catalysis; organocatalysis; green chemistry; bioactive compounds; non toxic antifouling agents
Co-Guest Editor
Prof. Dr. Dario Landini

Dipartimento di Chimica, Università degli Studi di Milano, via Golgi 19, 20133 Milano, Italy
Interests: fundamental studies and applications of phase transfer catalysis

Special Issue Information

Dear Colleagues,

Phase-transfer catalysis (PTC) began to develop in the 1960s and soon received widespread attention by academic and industrial chemists due to its simplicity and versatility. Nowadays it still represents a well established procedure, widely employed in academic research and industrial applications, and is particularly attractive from the environmental and economic point of view. In particular, PTC is a powerful tool to carry out reactions with environmentally benign reagents and solvents under mild and safe reaction conditions, and is therefore a suitable methodology for practical synthesis on scale.

A typical example is the replacement of hazardous, expensive and strong bases with inexpensive alkaline hydroxides or carbonates.

Moreover, the great development in asymmetric PTC reactions has enormously increased the synthetic potential of this methodology.

This special issue will focus on recent progress in the application of PTC to organic synthesis and hopefully will contribute to increase familiarity of PTC within chemical community.

Dr. Domenico Albanese
Prof. Dr. Dario Landini
Guest Editors

Submission

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. Papers will be published continuously (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are refereed through a peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed Open Access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs).

Keywords

  • phase transfer catalysis
  • organocatalysis
  • non-hazardous reagents
  • asymmetric catalysis
  • depollution
  • environmentally benign reagents
  • green chemistry
  • sustainable development

Published Papers (3 papers)

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Research

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Open AccessFeature PaperArticle Solventless Synthesis of Quaterphenyls and Terphenyls from Chalcones and Allylsulfones under Phase Transfer Catalysis Conditions
Catalysts 2016, 6(9), 142; doi:10.3390/catal6090142
Received: 15 July 2016 / Revised: 31 August 2016 / Accepted: 7 September 2016 / Published: 13 September 2016
PDF Full-text (3684 KB) | HTML Full-text | XML Full-text
Abstract
Easily available chalcones and allyl sulfones along with cheap solid NaOH and polyethyleneglycol (PEG) 1000 have been used to directly generate the meta-terphenyl or quaterphenyl motifs under Phase Transfer Catalysis solventless conditions. The new approach provides an economic and environmentally friendly [...] Read more.
Easily available chalcones and allyl sulfones along with cheap solid NaOH and polyethyleneglycol (PEG) 1000 have been used to directly generate the meta-terphenyl or quaterphenyl motifs under Phase Transfer Catalysis solventless conditions. The new approach provides an economic and environmentally friendly solution to removal of hazardous bases as well as organic solvents. Full article
(This article belongs to the Special Issue Phase-Transfer Catalysts)
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Open AccessArticle Cyclopropanation of 5-(1-Bromo-2-phenyl-vinyl)-3-methyl-4-nitro-isoxazoles under Phase Transfer Catalysis (PTC) Conditions
Catalysts 2015, 5(2), 595-605; doi:10.3390/catal5020595
Received: 27 February 2015 / Revised: 27 March 2015 / Accepted: 3 April 2015 / Published: 13 April 2015
Cited by 5 | PDF Full-text (695 KB) | HTML Full-text | XML Full-text
Abstract
Heavily substituted cyclopropane esters were prepared in high yields, complete diastereoselection and average (up to 58%) enantioselectivity. The reaction described herein entailed reacting 4-nitro-5-bromostyrylisoxazoles, a class of powerful Michael acceptors with malonate esters under the catalysis of 5 mol% of a chincona [...] Read more.
Heavily substituted cyclopropane esters were prepared in high yields, complete diastereoselection and average (up to 58%) enantioselectivity. The reaction described herein entailed reacting 4-nitro-5-bromostyrylisoxazoles, a class of powerful Michael acceptors with malonate esters under the catalysis of 5 mol% of a chincona derived phase-transfer catalyst. Full article
(This article belongs to the Special Issue Phase-Transfer Catalysts)

Review

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Open AccessReview Solid-Liquid Phase C-Alkylation of Active Methylene Containing Compounds under Microwave Conditions
Catalysts 2015, 5(2), 634-652; doi:10.3390/catal5020634
Received: 4 February 2015 / Revised: 31 March 2015 / Accepted: 7 April 2015 / Published: 21 April 2015
Cited by 2 | PDF Full-text (1157 KB) | HTML Full-text | XML Full-text
Abstract
The solid–liquid phase C-alkylation of active methylene containing compounds with C=O or P=O functions under phase transfer catalysis or microwave conditions has been summarized in this minireview. The mono- and dialkylation of the methylene containing derivatives was investigated under microwave (MW) [...] Read more.
The solid–liquid phase C-alkylation of active methylene containing compounds with C=O or P=O functions under phase transfer catalysis or microwave conditions has been summarized in this minireview. The mono- and dialkylation of the methylene containing derivatives was investigated under microwave (MW) conditions. It was found that in many cases, there was no need to use phase transfer catalyst under MW conditions. Moreover, most of the reactions were carried out without any solvent. These results mean a serious green chemical advantage. Full article
(This article belongs to the Special Issue Phase-Transfer Catalysts)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Heterogeneous Phase Alkylation of CH Acidic Compounds Under Microwave  Conditions
Authors: Alajos Grün* and György Keglevich
Abstract: In this minireview, the importance of the combined use of the phase transfer catalytic (PTC) and the microwave (MW) technique is summarized on the example of the solid-liquid phase C-alkylation of a series of simple CH-acidic compounds and  P=O containing analogues. The mono- and dialkylation of the CH acidic compounds were investigated under MW conditions. It was found that in many cases, there is no need to use a phase transfer catalyst under MW conditions, as MW substituted the catalyst. Moreover, in most of the cases, there was no need for solvent either. These experiences mean a serious green chemical advantage.

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