-
公开(公告)号:US5811593A
公开(公告)日:1998-09-22
申请号:US747479
申请日:1996-11-12
IPC分类号: A61K8/37 , A61Q19/02 , C07C41/48 , C07C41/54 , C07C43/315 , C07D307/20 , C07D309/12 , C07C43/307
CPC分类号: C07C41/48 , A61K8/375 , A61Q19/02 , C07C41/54 , C07C43/315 , C07D307/20 , C07D309/12
摘要: The present invention is for a process for preparing monoacetals of hydroquinone wherein said process provides for higher yields of greater purity. Said process utilizes a two step reaction wherein a protected hydroquinone is reacted with an enol ether to form a protected intermediate. Upon hydrogenolysis of said intermediate a final product, monoacetal hydroquinone, is formed having higher degree of purity and in greater yields that the yields attributed to reactions known in the art.
摘要翻译: 本发明涉及一种制备氢醌单缩醛的方法,其中所述方法提供更高纯度的较高产率。 所述方法利用两步反应,其中将保护的氢醌与烯醇醚反应以形成受保护的中间体。 当所述中间体最终产物氢解时,形成具有更高纯度和更高产率的单醛对苯二酚,由此产生归因于本领域已知的反应。