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    • 5. 发明授权
    • Process for producing cyclic amines
    • 环胺的制备方法
    • US4841061A
    • 1989-06-20
    • US126351
    • 1987-11-30
    • Yuuji ShimasakiMichio UeshimaHideaki TunekiKimio Ariyoshi
    • Yuuji ShimasakiMichio UeshimaHideaki TunekiKimio Ariyoshi
    • B01J27/18B01J27/182B01J27/188B01J27/19B01J27/195C07D203/08C07D205/04C07D211/02C07D295/023
    • C07D203/08B01J27/1802B01J27/1804B01J27/182B01J27/188B01J27/19B01J27/195C07D205/04C07D211/02C07D295/023
    • A process for producing a cyclic amine represented by the general formula ##STR1## wherein each of R and R' is selected from hydrogen, a methyl group and an ethyl group, and n is an integer of 2 to 5, which comprises vapor-phase intramolecular dehydration reaction of an alkanolamine represented by the general formula ##STR2## wherein R, R' and n are as defined above, said reaction being carried out in the presence of, as a catalyst, an oxide composition represented by the following formulaX.sub.a P.sub.b Y.sub.c O.sub.dwherein X is at least one element selected from transition metal elements of Groups I through VIII, lanthanide elements, actinide elements and elements of Group IIIA in the periodic table, Si, Ge, Sn, Pb, Sb and Bi, P is phosphorus, Y is at least one element selected from alkali metal elements and alkaline earth metal elements, O is oxygen, the suffixes a, b, c and d are the atomic ratios of the elements X, P, Y and O respectively, and when a=1, b=0.01-6, preferably 0.05-3, and c=0-3, preferably 0.01-2, and d is a value determined by a, b and c and the state of bonding of the constituent elements.
    • 一种制备由通式(II)表示的环胺的方法,其中R和R'各自选自氢,甲基和乙基,n为2至5的整数,其包括 由通式(I)表示的链烷醇胺的气相分子内脱水反应其中R,R'和n如上所定义,所述反应在作为催化剂的存在下进行,所述氧化物组合物代表 通过下式XaPbYcOd,其中X是选自元素周期表中的第I至VIII族的过渡金属元素,镧系元素,锕系元素和IIIA族的元素中的至少一种元素,Si,Ge,Sn,Pb,Sb和Bi, P是磷,Y是选自碱金属元素和碱土金属元素中的至少一种元素,O是氧,后缀a,b,c和d分别是元素X,P,Y和O的原子比, 当a = 1时,b = 0.01-6,优选为0.05-3,c = 0-3, 优选为0.01-2,d为由a,b和c确定的值以及组成元素的结合状态。
    • 8. 发明授权
    • Process for the preparation of alpha-oxoaldehydes
    • 制备α-氧代醛的方法
    • US06313343B1
    • 2001-11-06
    • US09462527
    • 2000-01-07
    • Yoshitaka AritaAkihiko OhtaNoboru SaitoKimio Ariyoshi
    • Yoshitaka AritaAkihiko OhtaNoboru SaitoKimio Ariyoshi
    • C07C6966
    • C07C45/37C07C45/38C07C45/39C07C67/39C07C49/185C07C47/127C07C69/716
    • Alkylene glycol is oxidized in a vapor phase in the presence of alcohol (a), oxygen, and a catalyst (a) (primary reaction). &agr;-oxoaldehyde, and alcohol (b) or olefin, are oxidized in a vapor phase in the presence of oxygen and a catalyst (b) (secondary reaction). A molar ratio of the alkylene glycol to the alcohol (a) is preferably in a range of 1/100 to 5/1. It is preferable that one same compound is used as the alcohol (a) and the alcohol (b). In the case where the primary and secondary reactions are successively executed, a reaction device in which a primary reactor and a secondary reactor are connected in a two-stage connection type is preferably used. This ensures that a method is provided that is capable of producing &agr;-oxoaldehyde at a higher yield than conventionally, and further, that is capable of stably obtaining an &agr;-oxoaldehyde solution or gas with a higher concentration than conventionally.
    • 在醇(a),氧气和催化剂(a)(初级反应)的存在下,在气相中氧化亚烷基二醇。 α-氧代醛和醇(b)或烯烃在氧气和催化剂(b)的存在下在气相中被氧化(二次反应)。 亚烷基二醇与醇(a)的摩尔比优选在1/100〜5/1的范围内。 优选使用一种相同的化合物作为醇(a)和醇(b)。 在连续进行一次反应和二次反应的情况下,优选使用其中一级反应器和二级反应器以两级连接型连接的反应装置。 这确保了提供能够以比常规方法更高的产率生产α-氧代醛的方法,并且还能够稳定地获得比常规浓度高的α-氧代醛溶液或气体。