Acid-catalysed reactions

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 41/09 (2006.01) C07C 1/20 (2006.01) C07C 1/24 (2006.01) C07C 41/50 (2006.01) C07C 41/56 (2006.01) C07D 307/08 (2006.01) C07D 317/12 (2006.01)

Patent

CA 2364851

The present invention relates to acid-catalysed reactions of alcohols to produce ethers, acetals, ketals or alkenes. The reactions are carried out in the presence of a heterogenous catalyst under near-GB0000672or supercritical conditions of temperature and pressure. The reactions of the present invention have the benefit that improved yields and/or selectivities may be obtained. In some cases, products which are not readily available by conventional acid- catalysed reactions of alcohols may be obtained.

L'invention concerne des réactions d'alcools éthyliques catalysées par des acides pour produire des éthers, des acétals, des cétals ou des alcènes. Les réactions sont réalisées en présence d'un catalyseur hétérogène dans des conditions de température ou de pression presque critiques ou supercritiques. Les réactions selon l'invention présente l'avantage d'offrir de meilleurs rendements et/ou de meilleures sélectivités. Dans certains cas, il est possible d'obtenir des produits qui ne sont pas facilement obtenus par des réactions classiques d'alcools catalysées par l'acide.

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