| 摘要 |
Provided is a method for efficiently producing alkoxysilanes that are useful as various functional chemicals. In order to produce alkoxysilanes efficiently, an ethoxy- or methoxysilane and an alcohol are caused to react using, as a catalyst, for instance an inorganic solid acid having a regular-pore and/or layered structure. Zeolites, montmorillonites or the like can be used as the inorganic solid acid. When a zeolite is used as the catalyst, the silica/alumina ratio of the zeolite ranges preferably from 5 to 1000. The reaction can be promoted through irradiation of microwaves. |
| 主权项 |
1. A method for producing alkoxysilanes, comprising a reaction step of reacting an alkoxysilane having an ethoxy group or a methoxy group, and an alcohol, in the presence of a catalyst, wherein
the alkoxysilane having an ethoxy group or methoxy group is an alkoxysilane represented by Formula (I); the alcohol is an alcohol represented by Formula (II); the catalyst is a solid acid catalyst; and an alkoxysilane obtained in the reaction step is an alkoxysilane represented by Formula (III):
R1pR2qR3rSi(OR4)4−(p+q+r) (I) (In Formula (I), p, q, r and p+q+r are integers ranging from 0 to 3; R1, R2 and R3 are each independently a hydrocarbon group having 1 to 23 carbon atoms, or a hydrogen atom; R4 is independently an ethyl group or a methyl group; and in a case where R1, R2 and R3 are hydrocarbon groups, some of the hydrogen atoms of the hydrocarbon groups may be substituted by groups that do not participate in the reaction);
ROH (II) (In Formula (II), R is a hydrocarbon group having 1 to 23 carbon atoms, and some of the hydrogen atoms in the hydrocarbon group may be substituted by groups that do not participate in the reaction);
R1pR2qR3rSi(OR4)4−(p+q+r)−m(OR)m (III) (In Formula (III), the meanings of p, q and r, and R1, R2, R3, R4 and R are identical to those above; and m is an integer ranging from 1 to 4−(p+q+r)). |
