1
wherein
R is alkyl, alkenyl, or alkynyl;
R
1
and R
2
are each independently hydrogen alkyl, or aryl; and
Ar is phenyl, indanyl, benzhydryl, or phenyl, substituted with one or more groups selected from the group consisting of halogen, alkyl, perfluoroalkyl, lower alkoxy, perfluoroalkylalkoxy, dialkylamino, and aroyloxy.
其中R为烷基、烯基或炔基;R1和R2各自独立地为氢、烷基或芳基;Ar为苯基、
茚基、苄基或苯基,其上取代一个或多个来自卤素、烷基、
全氟烷基、低烷氧基、
全氟烷氧基、二烷基胺基和芳酰氧基的基团。