申请人:BASF Aktiengesellschaft
公开号:US05767325A1
公开(公告)日:1998-06-16
A process for the preparation of enol ethers of the general formula I ##STR1## in which R.sup.1,R.sup.2,R.sup.3,R.sup.4,R.sup.5 denote C.sub.1 -C.sub.20 alkyl, C.sub.1 -C.sub.20 alkenyl, or C.sub.7 -C.sub.20 phenylalkyl, R.sup.2,R.sup.3,R.sup.4 denote hydrogen, aryl, cyano, --COOR.sup.5, C.sub.1 -C.sub.12 alkyl monosubstituted to trisubstituted or interrupted by --COOR.sup.5, --C.dbd.O, cyano, or C.sub.1 -C.sub.12 alkoxy, C.sub.1 -C.sub.12 alkyl monosubstituted to trisubstituted by --COOR.sup.5, --C.dbd.O, cyano, or C.sub.1 -C.sub.12 alkyl, or C.sub.7 -C.sub.20 phenylalkyl and R.sup.2 and R.sup.4 or R.sup.3 and R.sup.4 together form a C.sub.3 -C.sub.10 alkylene chain or a C.sub.2 -C.sub.20 alkylidene chain, from acetals or ketals.
一种从缩醛或缩酮制备通式I的烯醇醚的方法,其中R.sup.1,R.sup.2,R.sup.3,R.sup.4,R.sup.5表示C.sub.1-C.sub.20烷基,C.sub.1-C.sub.20烯基或C.sub.7-C.sub.20苯基烷基,R.sup.2,R.sup.3,R.sup.4表示氢,芳基,氰基,-COOR.sup.5,C.sub.1-C.sub.12烷基单取代到三取代或被-COOR.sup.5,-C.dbd.O,氰基或C.sub.1-C.sub.12烷氧基中断,C.sub.1-C.sub.12烷基单取代到三取代或被-COOR.sup.5,-C.dbd.O,氰基或C.sub.1-C.sub.12烷基,或C.sub.7-C.sub.20苯基烷基,且R.sup.2和R.sup.4或R.sup.3和R.sup.4一起形成C.sub.3-C.sub.10烷基链或C.sub.2-C.sub.20烷基亚甲基链。