| 摘要 |
<p>An aromatic ether acylation process is described, particularly a process for acylating a substituted aromatic ether and more particularly veratrol. The method of the invention includes reacting the ether with an acylation agent in the presence of a zeolite catalyst, and is characterised in that the acylation reaction is conducted in the presence of an effective amount of a catalyst containing a faujasite type zeolite or zeolite Y with the following physical and chemical characteristics: an atomic ratio, designated as 'global Si:Me1', between the number of atoms of the silicon component and the number of atoms of any trivalent component Me1 contained in the zeolite, in the range of 2.4 to 90, preferably of 2.4 to 75 and even more preferably of 2.4 to 60, and an alkali metal Me2 content such that the atomic ratio Me?2:Me1(IV)¿ between the number of atoms of the alkali metal Me2 and that of any trivalent component Me1(IV) contained in the zeolite matrix, is lower that 0.2, preferably lower than 0.1 and even more preferably, lower than 0.05.</p> |
