SYNTHESIS, NMR AND MOLECULAR MODELING STUDY OF 4,9a-DIARYL-9,9a-DIHYDRO 1<i>H</i>-[1,4]THIAZINO[4,3-a][1,3]BENZIMIDAZOLES
作者:E. Karthikeyan、S. Perumal、S. Selvaraj
DOI:10.1080/10426500490494525
日期:2004.12.1
A series of substituted 4,9a-diaryl-9,9a-diliydro-1H-[1,4]thiazino[4,3-a][1,3]benzimidazoles was prepared in good yields from the reaction of bis(aroylmethyl) sulfides with ortho-phenylenediamine in glacial acetic acid under reflux and under microwave irradiation. Microwave irradiation is found to accelerate the reaction, besides giving better yield in the case of the thiazinobenzimidazoles with. electron-withdrawing groups in the aryl rings than the thermal reaction.