Vinylic substitution by DBN and DBU with ethyl ( E )- and ( Z )-3-aryl-3-chloro-2-cyanopropenoates

Abstract

Some new 6-aryl-7-cyano-1,5-diazatricyclo[7,4,1^1,9,0^5,14]tetradeca-6,9-dien-8-ones (4a–c) and 6-aryl-7-cyano-1,5-diazatricyclo[7,1,2^1,9,0^5,12]dodeca-6,9-dien-8-ones (5a–c) have been prepared in moderate to good yields by reacting ethyl (E)- and (Z)-3-aryl-3-chloro-2-cyanopropenoates (1a–c) with DBU (1,8-diazabicyclo[5,4,0]undec-7-ene) and DBN (1,5-diazabicyclo[4,3,0]non-5-ene).