Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 20, Issue 13, Pages 2693-2703Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d2ob00047d
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- Algerian Ministry of Higher Education and Scientific Research (MESRS)
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In this paper, we report the highly selective ring opening of a biobased itaconic anhydride catalyzed by Pseudomonas cepacia lipase at room temperature. This method is efficient and environmentally friendly, allowing for the synthesis of valuable itaconate esters using a variety of alcohols as nucleophiles. The reaction yields novel itaconate products when achiral primary alcohols are used as substrates.
Herein, we report for the first time the highly regio- and enantioselective ring opening of a biobased itaconic anhydride catalyzed by the Pseudomonas cepacia lipase (PCL) in tert-butyl methyl ether (TBME) at room temperature. This method is easy, efficient and eco-friendly and can be performed in one step with a series of highly valuable monoester itaconates (achiral or enantioenriched) using various alcohols as nucleophiles with 100% atom economy. In all cases, the beta-monoester isomer was the predominant product of the reaction. Using achiral primary alcohols as substrates, a variety of novel itaconates were obtained in moderate to excellent yields (50-90%). For select examples, product characterization was carried out using X-ray diffraction, in addition to the standard techniques. The application of this approach was performed for the preparation of enantioenriched 4-monoester itaconates via enzymatic kinetic resolution.
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