会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明授权
    • Selective oxidation of alkylbenzenes
    • 烷基苯的选择性氧化
    • US07326815B2
    • 2008-02-05
    • US11318731
    • 2005-12-27
    • Jihad Mohammed DakkaDoron LevinJon Edmond Randolph Stanat
    • Jihad Mohammed DakkaDoron LevinJon Edmond Randolph Stanat
    • C07C45/53C07C37/08
    • C07C409/08C07C37/08C07C45/53C07C407/00C07C409/10C07C49/08C07C49/10C07C39/04
    • The present invention relates to a process for producing phenol and a ketone of general formula R1COCH2R3 (I), in which R1 and R2 each independently represent an alkyl group having from 1 to 4 carbon atoms, said process comprising: (a) providing an alkylbenzene feedstock comprising (i) an alkylbenzene of general formula (II) in which R1 and R2 have the same meaning as in formula (I) and (ii) at least one structural isomer of said alkylbenzene of formula (II) in an amount of at least 0.7% of the weight of alkylbenzene of formula (II), (b) submitting the alkylbenzene feedstock to oxidation conditions in the presence of oxygen and in the presence of a cyclic imide of formula (III): in which X represents a carbonyl (CO) group or a sulfonyl (SO2) group, n is 0, 1, 2, 3 or 4, R3 is one or several groups selected from a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an amino group and R4 is a hydrogen atom, an alkaline metal cation or an alkaline earth metal cation, or in the presence of N,N′,N″-trihydroxyisocyanuric acid (THICA), to produce a product comprising a hydroperoxide of general formula (IV) in which R1 and R2 have the same meaning as in formula (I), and (c) converting the hydroperoxide of formula (IV) into phenol and a ketone of formula (I).
    • 本发明涉及一种制备通式为R 1,R 2,R 3,R 3(I)的苯酚和酮的方法,其中R 各个独立地表示具有1至4个碳原子的烷基,所述方法包括:(a)提供烷基苯原料,其包含(i)烷基苯, 其中R 1和R 2 2的通式(II)具有与式(I)中相同的含义和(ii)所述烷基苯的至少一种结构异构体 (II)的量为至少0.7%的式(II)的烷基苯的重量,(b)将烷基苯原料在氧气存在下并在式(III)的环状酰亚胺存在下, :其中X表示羰基(CO)基团或磺酰基(SO 2 H 2)基团,n为0,1,2,3或4,R 3为一个 或选自氢原子,卤素原子,烷基,烷氧基,氨基的数个基团 并且R 4是氢原子,碱金属阳离子或碱土金属阳离子,或在N,N',N“ - 三羟基异氰尿酸(THICA)的存在下,产生 包含通式(IV)的氢过氧化物的产物,其中R 1和R 2具有与式(I)中相同的含义,和(c)将氢过氧化物 式(IV)转化成苯酚和式(I)的酮。