- Biphasic Palladium-Catalyzed Hydroesterification in a Polyol Phase: Selective Synthesis of Derived Monoesters
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The palladium-catalyzed hydroesterification reaction was performed with polyols and olefins in a liquid/liquid biphasic system composed of unreacted polyol on the one hand and apolar reaction products/organic solvents on the other hand. The palladium-base
- Pruvost, Romain,Boulanger, Jér?me,Léger, Bastien,Ponchel, Anne,Monflier, Eric,Ibert, Mathias,Mortreux, André,Sauthier, Mathieu
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p. 2133 - 2137
(2015/06/30)
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- Fragmentation of chloroperoxides: Hypochlorite-mediated dehydration of hydroperoxyacetals to esters
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Hypochlorites efficiently dehydrate hydroperoxyacetals to furnish the corresponding esters. The reaction, which can be accomplished with stoichometric Ca(OCl)2 or with catalytic amounts of t-BuOCl, appears to involve formation and heterolytic fragmentation of secondary chloroperoxides, species not previously described in solution chemistry.
- Fisher, Thomas J.,Dussault, Patrick H.
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experimental part
p. 5615 - 5617
(2010/10/21)
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- Facile oxidative hydrolysis of acetals to esters using hypervalent iodine(III)/LiBr combination in water
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The combination of (diacetoxy)iodobenzene (PhI(OAc)2, DIB) and lithium bromide (LiBr) efficiently oxidized cyclic and acyclic acetals to the corresponding hydroxyalkyl carboxylic esters and simple esters in good to excellent yields. The merits of this reaction are that it employs commercially available and non-explosive hypervalent iodine(III) reagent, water as the solvent, a short reaction time, and mild reaction conditions.
- Panchan, Waraporn,Chiampanichayakul, Supanimit,Snyder, Deanna L.,Yodbuntung, Siriporn,Pohmakotr, Manat,Reutrakul, Vichai,Jaipetch, Thaworn,Kuhakarn, Chutima
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experimental part
p. 2732 - 2735
(2010/05/17)
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- 2-Iodoxybenzoic acid/tetraethylammonium bromide/water: An efficient combination for oxidative cleavage of acetals
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A simple and efficient procedure has been developed for the oxidation of cyclic and acyclic acetals to the corresponding hydroxyalkyl carboxylic esters and simple esters, respectively. 2-Iodoxybenzoic acid (IBX) in the presence of tetraethylammonium bromide was employed for the reaction in aqueous media. The salient features of the protocol include short reaction time, environmentally benign reagents and solvent, and moderate to high yields. Georg Thieme Verlag Stuttgart.
- Kuhakarn, Chutima,Panchan, Waraporn,Chiampanichayakul, Supanimit,Samakkanad, Natthapol,Pohmakotr, Manat,Reutrakul, Vichai,Jaipetch, Thaworn
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experimental part
p. 929 - 934
(2009/10/14)
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- Esterification of aldehydes and alcohols with pyridinium hydrobromide perbromide in water
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The direct esterification of aldehydes and alcohols was carried out with pyridinium hydrobromide perbromide in water at room temperature. A variety of aldehydes were converted to respective ester derivatives with alcohols such as methanol, 1,2-ethanediol, 1,3-propanediol. Further, a variety of aliphatic alcohols were also converted to the corresponding Tishchenko-like dimeric esters in good yields under the same reaction conditions.
- Sayama, Shinsei,Onami, Tetsuo
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p. 2739 - 2745
(2007/10/03)
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