A process for producing an aromatic hydroxy compound having hydroxyl group at the para-position with respect to a hydroxy or an alkoxy substituent group present in the aromatic ring at a high yield and at a high selectivity, using a novel and useful hydroxylation catalyst which can afford to introduce hydroxyl group directly into aromatic ring at the para-position with respect to a hydroxy or an alkoxy substituent group, by reacting at least one compound selected from the group consisting of phenols, alkoxybenzenes and derivatives of them with hydrogen peroxide in the presence of the catalyst, wherein the hydroxylation catalyst is constituted of an oleophilized crystalline titanosilicate.

Um processo para produzir um composto hydroxy aromatic tendo o grupo do hydroxyl na parágrafo-posição com respeito a um grupo hydroxy ou alkoxy do substituent atual no anel aromatic em um rendimento elevado e em um selectivity elevado, usando uma novela e um catalizador útil do hydroxylation que pudessem ter recursos para introduzir o grupo do hydroxyl diretamente no anel aromatic na parágrafo-posição com respeito a um grupo hydroxy ou alkoxy do substituent, reagindo ao menos um composto selecionado dos phenols, dos alkoxybenzenes e dos derivatives consistindo do grupo deles com o peroxide de hidrogênio na presença do catalizador, wherein o catalizador do hydroxylation é constituído do oleophilized o titanosilicate cristalino.

 
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