-
公开(公告)号：USRE33779E
公开(公告)日：1991-12-24
申请号：US569059
申请日：1990-08-13
CPC分类号： C07C37/50
摘要： 4,4'-Dihydroxybiphenyl is prepared by decomposing 4,4'-di(2-hydroxy-2-propyl)biphenyl with hydrogen peroxide and an acid catalyst in acetonitrile as a solvent. Especially, this process minimizes the formation of by-products and permits easy purification of the intended product.
-
公开(公告)号：US4804788A
公开(公告)日：1989-02-14
申请号：US116733
申请日：1987-11-04
CPC分类号： C07C37/50
摘要： 4,4'-Dihydroxybiphenyl is prepared by decomposing 4,4'-di(2-hydroxy-2-propyl)biphenyl with hydrogen peroxide and an acid catalyst in acetonitrile as a solvent. Especially, this process minimizes the formation of byproducts and permits easy purification of the intended product.
摘要翻译： 通过用过氧化氢和酸催化剂在乙腈中作为溶剂分解4,4'-二（2-羟基-2-丙基）联苯来制备4,4'-二羟基联苯。 特别地，该方法使副产物的形成最小化并允许容易地纯化所需产物。
-
公开(公告)号：US4960945A
公开(公告)日：1990-10-02
申请号：US379388
申请日：1989-07-13
IPC分类号： C07C45/00 , C07C45/27 , C07C49/813 , C07C67/00
CPC分类号： C07C45/27 , C07C49/813
摘要： The present invention relates to a process for the production of halobenzophenone derivatives represented by the following formula (II): ##STR1## wherein X and Y are the same or different and are independently F, Cl, Br or I, m stands for an integer of from 1 to 4 and n stands for an integer of from 0 to 4. The process comprises oxidizing a compound with an aqueous nitric acid solution having a specific gravity of from 1.32 to 1.47 at 20.degree. C., said compound being represented by the following formula (I): ##STR2## wherein X, Y, m and n have the same meanings as defined above and Z is Cl or H.
-
-
搜索结果
3 条记录 (耗时 0.019 秒)
