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Table 3 Yield % of the synthesized carbonyl analogue of the targeted bis(imidazoazines)

From: Microwave assisted synthesis of bis and tris(ω-bromoacetophenones): versatile precursors for novel bis(imidazo[1,2-a]pyridines), bis(imidazo[1,2-a]pyrimidines) and their tris-analogs

Entry X 14,b( o-isomer) Yield%a
1 2 14a 58
2 4 14b 60
   15-d( p -isomer)  
3 3 15a 78
4 4 15b 81
  1. aYields of isolated compounds.