عبدالمحمد مهران پور

In the first part of this thesis, An efficient reaction for the synthesis of novel pyrimidine derivatives has been described by the reaction of ?- substituted trimethinium salts with thiourea or guanidine in the presence of ethyldiisopropylamine under reflux in ethanol. Subsequently, we described a protocol for the oxidative coupling of thiols employing DMSO and finally various disulfanes were obtained in good yields at 100 °C.