申请人:Wigbers Christof Wilhelm
公开号:US20120095221A1
公开(公告)日:2012-04-19
A process for preparing a cyclic tertiary amine of the formula I
where
A is a C
4
-alkylene group, a C
5
-alkylene group or a —(CH
2
)
2
—B—(CH
2
)
2
— group, where B is oxygen (O) or an N—R
1
radical and R
1
is C
1
-C
5
-alkyl, aryl or C
5
-C
7
-cycloalkyl, and the radical R
2
is a linear or branched C
2
-C
16
-alkyl, C
5
-C
7
-cycloalkyl or C
7
-C
20
-aralkyl, in which (i) an amino alcohol II from the group consisting of 1,4-aminobutanol, 1,5-aminopentanol, aminodiglycol (ADG) and aminoethylethanolamine of the formula IIa
where R
1
is as defined above or hydrogen (H), in which case R
1
═R
2
in the amine I, is reacted with a primary or secondary alcohol R
2
OH (III) at a temperature in the range from 150 to 270° C. in the liquid phase in the presence of a copper-comprising heterogeneous catalyst in a reactor.
一种制备式I的环状三级胺的方法,其中A是C4-烷基撑链、C5-烷基撑链或—(CH2)2—B—(CH2)2—基团,其中B是氧(O)或N—R1基团,R1是C1-C5-烷基、芳基或C5-C7-环烷基,基团R2是线性或支链的C2-C16-烷基、C5-C7-环烷基或C7-C20-芳基烷基,在反应器中在液相中在温度为150至270℃的条件下,将式II的氨基醇与式III的一次或二次醇R2OH反应,在铜含量不均匀的催化剂存在下进行反应,其中式II为1,4-氨基丁醇、1,5-氨基戊醇、氨基二乙醇(ADG)和式IIa的氨基乙基乙醇胺,其中R1如上所定义或氢(H),在这种情况下,R1═R2在胺I中。