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Part-IResults and DiscussionR 1ON+ .+HSNR 3+ .R 2R 1ONSNeIVxvie, R 1 = 4-BrPh, R 2 = H, R 3 = OCH 3 , M + , m/e 481NR 3NO+.R 2NS aIVia, R 1 = R 2 = -(CH 2 ) 4 -, R 3 = H, M + , m/e 218IVxxiiia, R 1 = R 2 = -(CH 2 ) 5 -, R 3 = OCH 3 ,M + , m/e 232OR 1NHR 3NHNR 2 SIVi, R 1 = R 2 = -(CH 2 ) 4 -, R 3 = HIVxvi, R 1 = 4-BrPh, R 2 = H, R 3 = OCH.-H 32 S-CH 3IVxxiii, R 1 = R 2 = -(CH 2 ) 5 -, R 3 = OCH 3R+. 3R 1ONH-SOONS-[O]NHNHNbIVib, R 1 = R 2 = -(CH 2 ) 4 -, R 3 = H, M + , m/e 150IVxvib, R 1 = 4 - BrPh, R 2 = H, R 3 = OCH 3 , M + , m/e 180IVxxiiib, R 1 = R 2 = -(CH 2 ) 5 -, R 3 = OCH 3 , M + , m/e 180+ .-CH 2 -CH=CH 2.R 2R 2R 1R 1ONHN gSIVxxiiig, R 1 = R 2 = -(CH 2 ) 5 -, M + , m/e 365-CONHNHN hSIVxxiiih, R 1 = R 2 = -(CH 2 ) 5 -, M + , m/e 337ONNNHOOHH-CH 2 =CH 2.R 2R 1SON-CH 3.IVxvif, R 1 = 4 - BrPh, R 2 = H, M + , m/e 466NfNNOOHR 2R 2R 1NcSIVic R 1 = R 2 = -(CH 2 ) 4 -, R 3 = H, M + , m/e 336IVxxiiic, R 1 = R 2 = -(CH 2 ) 5 -, R 3 = OCH 3 , R 3M + , m/e 380SNNH-COdNNHIVxxiiid, R 1 = R 2 = -(CH 2 ) 5 -, R 3 = OCH 3 , M + , m/e 352+.SONHNN jIVxxiiij, M + , m/e 323SONHNHNHN kIVxxiiik, M + , m/e 309NHOHScheme-25 General fragmentation pattern of condensedpyrimidinylmethylsulfinylbenzimidazoles (IVi-xxxv) synthesized111