(Hydrocarbylthio)phenols containing at least two hydrocarbylthio groups on a phenolic ring are prepared by reacting phenolic compounds with an excess of hydrocarbyl disulfide in the presence of catalytic amounts of an aluminum phenoxide. Novel and useful (hydrocarbylthio)phenols containing at least two hydrocarbylthio groups on a phenolic ring can be prepared by this process. (Hydrocarbylthio)phenols containing at least two hydrocarbylthio groups on a phenolic ring are effective antioxidants for organic material normally susceptible to oxidative deterioration, such as mineral oil.
Preparation of (alkylthio-,cycloalkythio- or arylthio)-phenols
申请人:ETHYL CORPORATION
公开号:EP0156352A2
公开(公告)日:1985-10-02
(Hydrocarbylthio) phenols, such as 2-(alkylthio) phenols, are prepared by heating one or more (hydrocarbylthio)- phenols selected from 2-, 3-, 4-, and poly(hydrocarbylthio)phenols in the presence of a catalytic amount of an aluminium phenoxide or a precursor thereof to redistribute the starting materials.
[EN] (HYDROCARBYLTHIO)PHENOLS AND THEIR PREPARATION
申请人:——
公开号:WO1984004092A1
公开(公告)日:1984-10-25
(EN) (Hydrocarbylthio)phenols containing at least two hydrocarbylthio groups or hydrocarbylthio groups in either or both of the meta positions, relative to the hydroxy group, on a phenolic ring are prepared by reacting phenolic compounds with an excess of hydrocarbyl disulfide in the presence of catalytic amounts of an aluminium phenoxide. Novel and useful (hydrocarbylthio)phenols containing at least two hydrocarbylthio groups or hydrocarbylthio groups in either of both of the meta positions, relative to the hydroxy group, on a phenolic ring can be prepared by this process. (Hydrocarbylthio)phenols containing at least two hydrocarbylthio groups or hydrocarbylthio groups in either or both of the meta positions, relative to the hydroxy group, on a phenolic ring are effective antioxidants for organic material normally susceptible to oxidative deterioration, such as mineral oil. (FR) (Hydrocarbylthio)phénols contenant au moins deux groupes hydrocarbylthio ou des groupes hydrocarbylthio dans l"une ou l"autre ou les deux positions méta, par rapport au groupe hydroxy, sur un anneau phénolique, préparés par réaction de composés phénoliques avec du bisulfure d"hydrocarbyle en excès en présence de quantités catalytiques d"un phénoxyde d"aluminium. De nouveaux (hydrocarbylthio)phénols utiles contenant au moins deux groupes hydrocarbylthio ou des groupes hydrocarbylthio dans l"une ou l"autre ou les deux positions méta, par rapport au groupe hydroxy, sur un anneau phénolique sont des antioxydants efficaces pour un matériau organique susceptible normalement de subir une détérioration par oxydation, telle que des huiles minérales.