- Process for Preparing Vinyl Carboxylates
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The present invention relates to a process for preparing vinyl carboxylates, wherein a carboxylic acid is reacted with an alkyne compound in the presence of a catalyst which is selected from carbonyl complexes, halides and oxides of rhenium, of manganese, of tungsten, of molybdenum, of chromium and of iron and rhenium metal at a temperature of ≦300° C. The process gives the desired vinyl esters with high yield.
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Page/Page column 6
(2009/01/24)
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- Synthesis of enol and vinyl esters catalyzed by an iridium complex
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Enol and vinyl esters were successfully synthesized by the use of an iridium complex as a catalyst. The reaction of carboxylic acid with terminal alkynes in the presence of catalytic amounts of [Ir(cod)Cl]2 and Na2CO3 gave the corresponding 1-alkenyl esters. The addition of carboxylic acids to alkynes principally took place in the Markovnikov fashion. In addition, by the use of an Ir complex combined with NaOAc various vinyl esters were prepared through the transvinylation between carboxylic acids and vinyl acetate.
- Nakagawa, Hideto,Okimoto, Yoshio,Sakaguchi, Satoshi,Ishii, Yasutaka
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p. 103 - 106
(2007/10/03)
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