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2. 发明申请

WO1982003857A1 PROCESS FOR PREPARING BIS(3,5-DIALKYL-4-HYDROXYPHENYL)SULFONE 审中-公开
标题翻译：制备双（3,5-二甲基-4-羟基苯基）硫醚的方法
公开(公告)号：WO1982003857A1
公开(公告)日：1982-11-11
申请号：PCT/US1982000558
申请日：1982-04-30
申请人： GENERAL ELECTRIC CO
发明人： GENERAL ELECTRIC CO , PETERS EDWARD NORMAN , SMITH GARY FRANCIS , STURGES JOHN STEELE
IPC分类号： C07C147/10
CPC分类号： C07C317/00
摘要： An improved process for the production of bis(3,5-dialkyl-4-hydroxyphenyl) sulfone. The process involves: (a) forming a reaction solution of substantially stoichiometric amounts of sulfuric acid and 2,6-dialkyl phenol in an excess of inert organic liquid which forms an aqueous azeotrope having a boiling point above about 155 C.; (b) heating said solution to a temperature within the range of from 155 to 180 C and above the boiling point of said azeotrope; (c) maintaining said temperature of said solution for a time of reaction sufficient to produce solid bis(3,5-dialkyl-4-hydroxyphenyl) sulfone and remove by-product water; and (d) separating said solid sulfone from said organic liquid. The process produces exceptionally high product purity and yields of 60% and higher. Moreover, this may be accomplished under relatively mild conditions and shortened time of reaction.
摘要翻译：一种改进的制备双（3,5-二烷基-4-羟基苯基）砜的方法。该方法包括：（a）在过量的惰性有机液体中形成基本上化学计量的硫酸和2,6-二烷基苯酚的反应溶液，其形成沸点高于约155℃的含水共沸物; （b）将所述溶液加热至155℃至180℃并高于所述共沸物沸点的温度; （c）将所述溶液的所述温度保持足以产生固体双（3,5-二烷基-4-羟基苯基）砜并除去副产物水的反应时间; 和（d）从所述有机液体中分离出所述固体砜。该方法产生极高的产物纯度和60％及更高的产率。此外，这可以在相对温和的条件下和缩短的反应时间内完成。

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