[EN] PROCESS FOR PREPARING PHENETHANOL ETHERS<br/>[FR] PROCEDE DE PREPARATION D'ETHERS DE PHENETHANOLS
申请人:HOECHST CELANESE CORPORATION
公开号:WO1995000467A1
公开(公告)日:1995-01-05
(EN) Substituted phenethanol ethers are prepared by the etherification of corresponding substituted phenethyl alcohols with an aliphatic primary alcohol. The etherification is carried out by reacting a substituted phenethyl alcohol with an aliphatic primary alcohol in the presence of an acid catalyst.(FR) On prépare des éthers de phénéthanols substitués en éthérifiant ces phénéthanols substitués avec un alcool aliphatique primaire. L'éthérification est effectuée en faisant réagir un phénéthanol substitué avec un alcool aliphatique primaire en présence d'un catalyseur acide.
Preparation and antioxidant activity of tyrosyl and homovanillyl ethers
was evaluated by the Rancimat test in a lipophilic food matrix and by the FRAP, ABTS and ORAC assays and compared to free Ty and HMV as well as two antioxidants widely used in the food industry, butylhydroxytoluene (BHT) and α-tocopherol. The results pointed out the higher activity of homovanillyl series in comparison with tyrosyl series with all the assayed methods. However, while both synthetic series