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    • 4. 发明授权
    • Catalyst for olefinic hydrocarbon polymerization and process and
producing olefinic hydrocarbon polymer
    • 用于烯烃聚合的催化剂和制备和生产烯烃聚合物
    • US5191041A
    • 1993-03-02
    • US821037
    • 1992-01-16
    • Hayato SabaKeisaku YamamotoAkio ImaiKiyoyuki SugimoriKizuku Wakatsuki
    • Hayato SabaKeisaku YamamotoAkio ImaiKiyoyuki SugimoriKizuku Wakatsuki
    • C08F10/00
    • C08F10/00
    • An inert hydrocarbon solvent-soluble catalyst for polymerization of olefinic hydrocarbons and a process for producing an olefinic polymer using the same are disclosed, the catalyst being composed of (A) a reaction product obtained by reacting (a) at least one vanadium compound represented by formula:VO(OR).sub.m X.sub.3-mwherein R represents a hydrocarbon group; X represents a halogen atom; and m represents a real number of from 0 to 3, and (b) a dihydroxy hydrocarbon compound constituted of a straight chain hydrocarbon skeleton containing from 2 to 12 carbon atoms and having a hydroxyl group at each of both terminals thereof and at least one hydrocarbon branch bonded to said hydrocarbon skeleton in an inert hydrocarbon solvent at an (a) to (b) molar ratio of from 1:0.5 to 1:1.4 and (B) at least one organoaluminum compound represented by formula:R'.sub.n AlX'.sub.3-nwherein R' represents a hydrocarbon group; X' represents a halogen atom; and n represents a real number more than 0 and less than 3. Olefinic hydrocarbon polymers having narrow distributions of molecular weight and composition can be produced with high efficiency and high polymerization activity without being accompanied by obstruction or contamination of equipment due to precipitation of a catalyst.
    • 公开了一种用于烯烃聚合的惰性烃溶剂可溶性催化剂和使用其的制备烯烃聚合物的方法,该催化剂由(A)通过使(a)至少一种钒化合物 式:VO(OR)mX3-m其中R表示烃基; X表示卤原子; m表示0〜3的实数,(b)由含有2〜12个碳原子的直链烃骨架构成的二羟基烃化合物,其两末端具有羟基,至少一个烃 在(a)至(b)摩尔比为1:0.5至1:1.4的惰性烃溶剂中与所述烃骨架键合的至少一种有机铝化合物,和(B)至少一种由式:R'nAlX'3- n其中R'表示烃基; X'表示卤原子; 并且n表示大于0且小于3的实数。可以以高效率和高聚合活性生产具有窄分子量和组成分布的烯属烃聚合物,而不伴随催化剂沉淀引起的设备阻塞或污染 。
    • 5. 发明授权
    • Processes for producing 1-benzyl-4-[(5,6-dimethoxy-1indanon)-2-yl]methylpiperidine and hydrochloride
    • 1-苄基-4 - [(5,6-二甲氧基-1茚满酮)-2-基]甲基哌啶和盐酸盐的制备方法
    • US07795438B2
    • 2010-09-14
    • US10580908
    • 2005-04-27
    • Akio ImaiHiroshi Nishimura
    • Akio ImaiHiroshi Nishimura
    • C07D211/32
    • C07D211/32B01J25/02
    • Processes for preparing 1-benzyl-4-[(5,6-dimethoxy-lindanon)-2-yl]methylpiperidine (donepezil), which is useful as an intermediate for medicines, and for producing 1-benzyl-4-[(5,6-dimethoxy-1-indanon)-2-yl]methylpiperidine hydrochloride (donepezil hydrochloride), which is useful as a medicine. The process for donepezil hydrochloride production comprises catalytically hydrogenating the compound represented by the structural formula (III) [1-benzyl-4-[(5,6-dimethoxy-lindanon)-2-ylidene]methylpiperidine] with a Raney nickel catalyst under mild conditions and subsequently treating it with hydrochloric acid. Thus, impurities are further diminished. The operations are simple and the process is suitable for industrial production.
    • 用于制备1-苄基-4 - [(5,6-二甲氧基 - 茚满酮)-2-基]甲基哌啶(多奈哌齐)的方法,其可用作药物的中间体,并用于制备1-苄基-4 - [(5 ,6-二甲氧基-1-茚满酮)-2-基]甲基哌啶盐酸盐(盐酸多奈哌齐),其可用作药物。 盐酸多奈哌齐的方法包括用温和的阮内镍催化剂催化氢化由结构式(III)[1-苄基-4 - [(5,6-二甲氧基 - 茚满酮)-2-亚基]甲基哌啶]代表的化合物 然后用盐酸处理。 因此,杂质进一步减少。 操作简单,适用于工业生产。