A Novel Approach Toward the Synthesis and Characterization of Pyrimidyl Chalcogen Compounds
作者:K. K. Bhasin、Ekta Arora、Rishu、Shivani Doomra、Nishima、Yogesh Nagpal、Rajeev Kumar、W. Weigand、S. K. Mehta
DOI:10.1080/10426500801900972
日期:2008.4.1
A variety of hitherto unknown symmetrical and unsymmetrical pyrimidyl chalcogen compounds have been synthesized and characterized by elemental analysis using various spectroscopic techniques viz. NMR (1)H, (13)C, (77)Se and infrared. Two different methodologies were employed. The first method involves the use of hydrazine hydrate as reducing agent to generate dichalcogenide anions followed by reaction with 2,4-dichloropyrimidine to give the dichalcogenide compounds in good yield. The second method employs chlorine-magnesium exchange of 2,4-dichloropyrimidine using iso propyl magnesium chloride. The synthesis of the mixed phenyl pyrimidyl selenides have been achieved using sodium borohydride in ethanol as a reductive reagent to cleave Se-Se bond followed by alkylation with 2-chloro-4, 6-dimethylpyrimidine and 2, 4-dichloropyrimidine.