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Method for the production of 4,4′-1-(trifluoromethyl)alkylidene-bis-(2,6-diphenylphenols)

机译:制备4,4'-[1-(三氟甲基)亚烷基]-双-(2,6-二苯酚)的方法

摘要

The present invention relates to a process for preparing 4,4′-[1-(trifluoromethyl)alkylidene]bis(2,6-diphenylphenols), in particular for preparing 4,4′-[1-(trifluoromethyl)ethylidene]bis(2,6-diphenylphenol), which comprises the self-condensation of cyclohexanone in the presence of a basic catalyst to form tricyclic condensation products, dehydrogenation of the resulting tricyclic condensation products in the presence of a supported transition metal catalyst in the condensed phase to form 2,6-diphenylphenol and reaction of the 2,6-diphenylphenol with a trifluoromethyl ketone. The invention further provides an improved process for preparing 2,6-diphenylphenol by aldol self-condensation of cyclohexanone.
机译:本发明涉及一种制备4,4'-[1-(三氟甲基)亚烷基]双(2,6-二苯基苯酚)的方法,特别是一种制备4,4'-[1-(三氟甲基)亚乙基]双( 2,6-二苯基苯酚),包括在碱性催化剂存在下环己酮的自缩合反应形成三环缩合产物,在负载型过渡金属催化剂存在下在缩合相中将所得的三环缩合产物脱氢而形成2,6-二苯酚和2,6-二苯酚与三氟甲基酮的反应。本发明进一步提供了通过环己酮的醛醇自缩合制备2,6-二苯酚的改进方法。

著录项

  • 公开/公告号USRE46151E

    专利类型

  • 公开/公告日2016-09-20

    原文格式PDF

  • 申请/专利权人 BASF SE;

    申请/专利号US200814321865

  • 申请日2014-07-02

  • 分类号C07C39/16;C07C39/12;C07C45/74;C07C37/07;C07C37/20;C07C37/62;

  • 国家 US

  • 入库时间 2022-08-21 14:29:05

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