Hy. Li et al., A FACILE SYNTHESIS OF 4,4-BIS(TRIFLUOROMETHYL)IMIDAZOLINES VIA A NOVEL OXIDATIVE IMIDAZOLE REARRANGEMENT, Heterocycles, 43(5), 1996, pp. 937-940
Oxidation of imidazole (1) with singlet oxygen or m-chloroperbenzoic a
cid affords novel 4,4-bis(trifluoromethyl)imidazolines in high yield v
ia a unique oxidative ring opening and subsequent acid catalyzed dehyd
rocyclization.