us electrophiles in the presence of Cs 2CO 3. RCM reactions of C- and N-alkenylated products gave cyclic ami... us electrophiles in the presence of Cs 2CO 3. RCM reactions of C- and N-alkenylated products gave cyclic ami... >: The title compounds 3a-h were prepared via the reaction of imine derivatives viz. substituted 2-hydroxy-5... idine anilines 2a-h with ketenes generated by the reaction of chloroacetylchloride with triethylamine in 1,4