P. Rajakumar et al., CYCLOADDITION APPROACH FOR THE SYNTHESIS OF SOME HINDERED N-BENZOYLIMIDAZOLES, Synthetic communications, 24(13), 1994, pp. 1847-1853
Cycloaddition of N-Benzoyl-4,5-diphenyl-2-strylimidazole to 2,5-dimeth
yl-3,4-diphenylcyclopentadienone, tetraphenylcyclopentadienone, 1,3-di
phenylisobenzofuran and tetraphenylcyclopentadiene afforded the substi
tuted and hindered imidazoles 2a,2b,2c & 2d. The N-benzoyl styrylimida
zole 4 derived from phenanthrenequinone, cinnamaldehyde and ammonium a
cetate also underwent similar cycloaddition.