- The essential oil of Bupleurum fruticosum L. from Corsica: A comprehensive study
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A detailed analysis of Bupleurum fruticosum oil was carried out by combination of GC (RI), GC/ MS, and 13C-NMR analyses. After fractionation by column chromatography, 34 components accounting for 97.8% of the oils were identified. The main component was β
- Liu, Kai,Lota, Marie Laure,Casanova, Joseph,Tomi, Felix
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- Efficient Enzymatic Preparation of Flavor Esters in Water
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A straightforward biocatalytic method for the enzymatic preparation of different flavor esters starting from primary alcohols (e.g., isoamyl, n-hexyl, geranyl, cinnamyl, 2-phenethyl, and benzyl alcohols) and naturally available ethyl esters (e.g., formate, acetate, propionate, and butyrate) was developed. The biotransformations are catalyzed by an acyltransferase from Mycobacterium smegmatis (MsAcT) and proceeded with excellent yields (80-97%) and short reaction times (30-120 min), even when high substrate concentrations (up to 0.5 M) were used. This enzymatic strategy represents an efficient alternative to the application of lipases in organic solvents and a significant improvement compared with already known methods in terms of reduced use of organic solvents, paving the way to sustainable and efficient preparation of natural flavoring agents.
- Perdomo, Igor Chiarelli,Gianolio, Stefania,Pinto, Andrea,Romano, Diego,Contente, Martina Letizia,Paradisi, Francesca,Molinari, Francesco
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p. 6517 - 6522
(2019/06/20)
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- Mild, rapid, and inexpensive microwave-assisted synthesis of allylic and propargylic esters
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A variety of allylic and propargylic esters were rapidly prepared via microwave heating of their corresponding mixed anhydride derived from pivaloyl chloride. The reaction conditions were modified to account for the sterics of the alcohol and the electronics of the carboxylic acid. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications to view the free supplemental file.
- Gill, Monica A.,Manthorpe, Jeffrey M.
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supporting information
p. 1460 - 1468
(2013/05/09)
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- Indium-mediated Reformatsky-Claisen rearrangement
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A new variant of the Reformatsky-Claisen rearrangement is described. The reaction of substituted allyl α-bromoacetates with indium and indium(III) chloride under ultrasonication provides a general entry into the functionalized synthon.
- Ishihara, Jun,Watanabe, Yuki,Koyama, Noriko,Nishino, Yukihiro,Takahashi, Keisuke,Hatakeyama, Susumi
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experimental part
p. 3659 - 3667
(2011/06/21)
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