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    • 2. 发明申请
    • Method for producing cyclic lactams
    • 环状内酰胺的制备方法
    • US20030114664A1
    • 2003-06-19
    • US10257877
    • 2002-10-17
    • Frank OhlbachAndreas AnsmannPeter BasslerRolf-Hartmuth FischerHermann LuykenStefan MaixnerJohann-Peter Melder
    • C07D21/08C07D25/08C07D211/40C07D27/26
    • C07D201/08C07D201/16
    • The invention relates to a method for producing cyclic lactams of formula (II) by reacting a compound (I) of formula (I) with water in the presence of an organic, liquid dilution agent in the liquid phase. In formula (II), n and m respectively can have the values 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 and the sum of nnullm is at least 3, preferably at least 4 and R1 and R2 represent C1-C6 alkyl, C5-C7 cycloalkyl or C6-C12 aryl groups. In formula (I), R1, R2, m and n are defined as above and R represents nitrile, carboxylic acid amide and carboxylic acid groups. The inventive method is characterized in that a) compound (I) is reacted with water in the liquid phase in the presence of an organic, liquid dilution agent (III) to form a mixture (IV) containing a lactam (II) and said mixture (IV) is subjected to an aqueous treatment to obtain a two-phase system.
    • 本发明涉及在液相中有机液体稀释剂存在下使式(I)化合物(I)与水反应制备式(II)的环状内酰胺的方法。 在式(II)中,n和m分别具有0,1,2,3,4,5,6,7,8和9的值,并且n + m的和至少为3,优选至少为4,并且 R1和R2表示C1-C6烷基,C5-C7环烷基或C6-C12芳基。 在式(I)中,R 1,R 2,m和n如上定义,R代表腈,羧酸酰胺和羧酸基团。 本发明的方法的特征在于:a)化合物(I)在液相中在有机液体稀释剂(III)的存在下与水反应,形成含有内酰胺(II)的混合物(IV),所述混合物 (IV)进行水处理以获得两相体系。
    • 7. 发明申请
    • Method for producing cyclic lactams
    • 环状内酰胺的制备方法
    • US20030125544A1
    • 2003-07-03
    • US10258943
    • 2002-10-29
    • Frank OhlbachAndreas AnsmannPeter BasslerRolf-Hartmuth FischerHermann LuykenStefan MaixnerJohann-Peter Melder
    • C07D21/08C07D25/08C07D27/26C07D211/40
    • C07D201/08
    • A process is provided for the preparation of cyclic lactams of formula (II): 1 in which n and m can each have the values 0, 1, 2, 3, 4, 5, 6, 7, 8 and 9 and the sum of nnullm is at least 3, preferably at least 4, and R1 and R2 are C1-C6-alkyl, C5-C7-cycloalkyl or C6-C12-aryl groups, by reacting a compound (I) of the formula 2 in which R1, R2, m and n are as defined above and R are nullsicnull nitrile, carboxamide and carboxylic acid groups, with steam in the gas phase, wherein a) the compound (I) is reacted with steam in the gas phase with the addition, before or after the reaction, of an organic diluent (III) which exhibits a miscibility gap with water under specific quantity, pressure and temperature conditions, to give a mixture (IV) containing a lactam (II), b) the mixture (IV) is converted, before or after the separation of ammonia, under quantity, pressure and temperature conditions such that the diluent (III) and water are liquid and exhibit a miscibility gap, to give a two-phase system consisting of a phase (V) containing a higher proportion of diluent (III) than water, and a phase (VI) containing a higher proportion of water than diluent (III), c) the phase (V) is separated from the phase (VI), and d) the diluent (III) and optionally by-products selected from the group consisting of low-boiling component nullsicnull, high-boiling component nullsicnull and unreacted compound (I) are separated from the phase (V) to give a lactam (II).
    • 提供了制备式(II)的环状内酰胺的方法:其中n和m各自可以具有0,1,2,3,4,5,6,7,8和9以及n + m为至少3,优选至少4,并且R 1和R 2为C 1 -C 6 - 烷基,C 5 -C 7 - 环烷基或C 6 -C 12 - 芳基,其中R 1, R2,m和n如上所定义,R是具有气相中蒸汽的[sic]腈,甲酰胺和羧酸基团,其中a)化合物(I)与气相中的蒸汽反应, 在反应之前或之后,在特定量,压力和温度条件下与水显示出混溶性间隙的有机稀释剂(III),得到含有内酰胺(II)的混合物(IV),b)混合物(IV) 在数量,压力和温度条件下,在氨分离之前或之后转化,使得稀释剂(III)和水是液体并且表现出混溶性间隙,以产生两相系统的缺点 含有比水更高比例的稀释剂(III)的相(V)的沉淀,以及含有比稀释剂(III)更高比例的水的相(VI),c)将相(V)从相( VI)和d)稀释剂(III)和任选的选自低沸点组分[sic],高沸点组分[sic]和未反应化合物(I)的副产物与相(V ),得到内酰胺(II)。