申请人:BASF Aktiengesellschaft
公开号:US04855444A1
公开(公告)日:1989-08-08
.alpha.-Pyrrolidones and cyclic amidines Ia and Ib, respectively, for washing gases. ##STR1## where R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.8 -alkyl, C.sub.1 -C.sub.8 -alkoxy, C.sub.3 -C.sub.10 -cycloalkyl or C.sub.3 -C.sub.10 -cycloalkoxy or are bonded to one another to form a ring, R.sup.3 is hydrogen, C.sub.1 -C.sub.6 -alkyl, phenyl or naphthyl and R.sup.4 and R.sup.5 are each hydrogen or C.sub.1 -C.sub.4 -alkyl, are prepared by a method in which an amine II ##STR2## where R.sup.3' is hydrogen, tert-butyl, phenyl or naphthyl, is reacted with an .alpha., .beta.-unsaturated carboxylic acid derivative III ##STR3## where X is OR', --NR'R", --NHR' or --NH.sub.2 and R' and R" are each C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl or phenyl, or with an .alpha.,.beta.-unsaturated nitrile IV ##STR4## in the presence of a free radical initiator, and, where R.sup.3' is hydrogen and it is intended to prepare a compound in which R.sup.3' is C.sub.1 -C.sub.6 -alkyl, the product obtainable in this procedure is reacted with an alkylating agent to introduce a C.sub.1 -C.sub.6 -alkyl group.
.alpha.-吡咯烷酮和环戊二酰胺 Ia 和 Ib,分别用于洗涤气体。其中 R.sup.1 和 R.sup.2 分别为 C.sub.1 -C.sub.8 -烷基,C.sub.1 -C.sub.8 -烷氧基,C.sub.3 -C.sub.10 -环烷基或 C.sub.3 -C.sub.10 -环烷氧基,或彼此连接形成环,R.sup.3 为氢,C.sub.1 -C.sub.6 -烷基,苯基或萘基,R.sup.4 和 R.sup.5 分别为氢或 C.sub.1 -C.sub.4 -烷基,通过一种方法制备,其中胺 II 反应 ##STR2## 其中 R.sup.3' 为氢,叔丁基,苯基或萘基,与 .alpha.,.beta.-不饱和羧酸衍生物 III 反应 ##STR3## 其中 X 为 OR',--NR'R",--NHR' 或 --NH.sub.2,R' 和 R" 各为 C.sub.1 -C.sub.8 -烷基,C.sub.3 -C.sub.8 -环烷基或苯基,或与 .alpha.,.beta.-不饱和腈 IV 反应 ##STR4## 在自由基引发剂的存在下,并且,当 R.sup.3' 为氢且打算制备 R.sup.3' 为 C.sub.1 -C.sub.6 -烷基的化合物时,通过这种方法获得的产物与烷基化剂反应,以引入 C.sub.1 -C.sub.6 -烷基基团。