发明名称 |
Method for preparing long-chain alkyl cyclic acetals made from sugars |
摘要 |
Long-chain alkyl cyclic acetals made from sugars are obtainable by a method that comprises the steps consisting of:
dehydrating a hexitol in a monoanhydrohexitol substrate;reacting the monoanhydrohexitol substrate obtained with an alkyl aldehyde reagent containing 5 to 18 carbon atoms, by means of an acetalization reaction with a substrate/reagent ratio of between 5:1 and 1:1, or with a derivative of an alkyl aldehyde reagent containing 5 to 18 carbon atoms, by means of a transacetalization reaction with a substrate/reagent ratio of between 1:1 and 1:3, in the presence of acid catalyst and in an environment that is free of solvent or that consists of non-aqueous polar solvent;collecting the long-chain alkyl acetal of hexitan from the mixture obtained. |
申请公布号 |
US9499559(B2) |
申请公布日期 |
2016.11.22 |
申请号 |
US201414898475 |
申请日期 |
2014.06.13 |
申请人 |
SYRAL BELGIUM NV;UNIVERSITÉ CLAUDE BERNARD LYON 1;CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (C.N.R.S.) |
发明人 |
Gozlan Charlotte;Duguet Nicolas;Lemaire Marc;Queneau Yves;Redl Andreas |
分类号 |
C07D493/04;C07D407/04 |
主分类号 |
C07D493/04 |
代理机构 |
Symbus Law Group, LLC |
代理人 |
Symbus Law Group, LLC ;Hyra Clifford D. |
主权项 |
1. A method for preparing long-chain alkyl cyclic acetals made from sugars, characterized in that the method comprises the following steps:
dehydrating a hexitol in a monoanhydrohexitol substrate; reacting the monoanhydrohexitol substrate obtained with an alkyl aldehyde reagent containing 5 to 18 carbon atoms, by means of an acetalization reaction with a substrate/reagent ratio of between 5:1 and 1:1, or with a derivative of an alkyl aldehyde reagent containing 5 to 18 carbon atoms, by means of a transacetalization reaction with a substrate/reagent ratio of between 1:1 and 1:3, in the presence of acid catalyst and in an environment that is free of solvent or that consists of non-aqueous polar solvent; and collecting the long-chain alkyl acetal of hexitan from the mixture obtained. |
地址 |
Aalst BE |