Jz. Zhu et al., A NOVEL PHOTO-ASSISTED ANNULATION REACTION FOR THE SYNTHESIS OF 6,7-DICHLOROIMIDAZO[4,5-B]QUINOLIN-2-ONE, Tetrahedron letters, 37(12), 1996, pp. 1937-1940
A novel photo-assisted annulation was developed for the synthesis of 6
,7-dichloroimidazo[4,5-b]quinolin-2-one. This mild ring closure method
has circumvented problem associated with the previous methods and sho
uld tolerate a variety of functional groups.