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對羥基苯乙酮

來源:http://www.ylndht.com/product224460.html   發布于:2019/7/18 17:44:06
對羥基苯乙酮

   在制備鄰對羥基苯乙酮時應注意控制好溫度,而Fries重排進指酚酯在三氯化鋁的存在下加熱,?;嘏诺洁徫换驅ξ?。如果芳環上帶有間拉定位基,則不會發生此類重排。且低溫有利于對位產物,高溫有利于鄰位產物。一般情況下,在制備過程時,反應溫度控制在60攝氏度左右時,可制備出對羥基苯乙酮,如果反應溫度過高,則主要生產鄰羥基苯乙酮。

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