申请人:Ciba Specialty Chemicals Holding Inc.
公开号:EP0881210A1
公开(公告)日:1998-12-02
The present invention provides a process for the production of an N,N- dialkylaminophenyl alkanol having the formula:
in which R1 and R2, independently, are C1-C4alkyl, R3 is hydrogen, halogen, cyano, C1-C4alkyl or C1-C4alkoxy and n is an integer from 1 to 4,
comprising reacting an aminophenyl alkanol having the formula:
in which R3 and n have their previous significance, with at least two moles of a dialkylsulfate having the formula:
in which R1 and R2 have their previous significance.
N,N-dialkylaminophenyl alkanols so obtained are valuable as intermediates for a wide range of end-products and are also useful, e.g., as accelerators for the peroxide-catalyzed polymerization of vinyl monomers, especially in polymerizable or curable formulations employed in dental applications.
本发明提供了一种具有以下式子的 N,N-二烷基氨基苯基烷醇的生产工艺:
其中 R1 和 R2 分别为 C1-C4 烷基,R3 为氢、卤素、氰基、C1-C4 烷基或 C1-C4 烷氧基,n 为 1 至 4 的整数、
包括使具有以下式子的氨基苯基烷醇反应
式中 R3 和 n 具有其原有意义的氨基苯基烷醇与至少两摩尔式中 R1 和 R2 具有其原有意义的二烷基硫酸盐反应:
其中 R1 和 R2 具有其原有意义。
这样得到的 N,N-二烷基氨基苯基烷醇可作为多种最终产品的中间体,也可作为乙烯基单体过氧化物催化聚合的促进剂,特别是在牙科应用的可聚合或可固化配方中。