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The Study on Bisphenols as Antioxidants

双酚类抗氧化剂的研究

基本信息

批准号：
62550619
负责人：
YAMADA Fukiko Professor
金额：
$ 1.28万
依托单位：
Kansai university
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1988
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-62550619/
关键词：
Bisphenols Preparation of bisphenols 酸化防止剤

项目摘要

[1] An efficient preaparation of alkylidene and benzylidene bisphenols by using nitromethane as the solvent in the condensation of phenols with aldehydes is described.[2] The antioxidative activities of 19 compounds of 7 series of alklyidene and benzylidene bisphenols were evaluated by using an oxygen-absorption method at 60 ゜C for tetralin. The electrochemical oxidation potentials determined using linear-sweep voltammetry and the ^<13>C NMR chemical shifts (delta) of these compounds were obtained. These data were connected with the antioxidative activities. In particular, the activities exhibited by induction period (min) were found to closely correlate with the ^<13>C chemical shifts of the ipso-carbon of the OH substituent (corr. coeff.=0.991). Very good activities have been observed with a series of 2,2'-alklyidene and benzylidene bis(4,6-dimethylphenol) derivatives.

[1]在苯酚与醛的缩合反应中，以硝基甲烷为溶剂，有效地制备了亚烷基和亚苄基双酚.[2]采用四氢呋喃在60゜C下吸氧的方法，评价了7个系列的19个化合物的抗氧化活性.用线性扫描伏安法测定了这些化合物的电化学氧化电位，并测定了它们的~(13)~gt；c-核磁共振化学位移(Delta)。这些数据与其抗氧化活性有关。特别是，诱导期(Min)所表现出的活性与羟基取代基的同位碳的~(13)&gt；C化学位移密切相关。系数=0.991)。一系列2，2‘-亚烷基和亚苄基双(4，6-二甲基苯酚)衍生物具有很好的催化活性。