3 cl 11 95 n 9 44 found c 60 54 h 71 4 cl 11 90 n 9 34 reaction of 2 3 5 6 7 8 hexahydro 2 phenyl 8 phenylthioimidazo 1 2 a pyridine with chloramine t as in the above example but using etoh in place of meoh afforded the diethoxy ketal as a dark oil treatment of an ethanol solution of the free base with etoh h 2 so 4 followed by et 2 o yielded the sulfate salt as a colorless amorphous powder mp 142 u00b0 144 u00b0 anal calc 39 d for c 17 h 26 n 2 o 6 s c 52 83 h 6 78 n 7 25 s 8 30 found c 52 45 h 6 77 n 7 23 s 8 61 to a methanol solution 135 ml of 2 5 6 7 tetrahydro 2 phenyl 7 7 diphenylthio 3h pyrrolo 1 2 a imidazole 5 35 g under n 2 was added all at once chloramine t 15 2 g suspended in meoh 135 ml and the bright yellow solution was heated at reflux for 16 hrs the solution was then allowed to cool to room temperature and the solvent was evaporated off at reduced pressure.