76273-56-8Relevant academic research and scientific papers
Diamagnetic Susceptibilities of 4H-1,4-Benzothiazines
Gupta, R. R.,Kumar, M.,Kumar, Rakesh,Gautam, R. K.
, p. 62 - 63 (2007/10/02)
The experimental diamagnetic susceptibilities of a number of 4H-1,4-benzothiazines (I) have been measured.Diamagnetic susceptibilities of compounds (I) have also been estimated considering these molecules to be made of two structural units; one consisting of o-aminobenzenethiol containing the substituents and the other consisting of β-diketones/β-ketoesters.Diamagnetic susceptibily contributions of these two structural units have been calculated.The divergence between calculated and experimental values of diamagnetic susceptibilities of I is less than 1.5percent.Such an excellent agreement between calculated and experimental values is attributed to the fact that almost all the structural interactions caused by substituents have been accounted for in these calculations by considering the above two structural units.
A CONVENIENT AND SINGLE STEP SYNTHESIS OF SUBSTITUTED 4H-BENZOTHIAZINES.
Gupta, R. R.,Ojha, K. G.,Kalwania, G. S.,Kumar, M.
, p. 1145 - 1149 (2007/10/02)
A simple one step synthesis is reported for substituted 4H-benzothiazines involving the condensation of 5-(chloro, bromo, methyl, methoxy, ethoxy)-, 4-methyl- and 3-(chloro and methoxy)-2-aminobenzenethiols with acetylacetone/ethyl acetoacetate/dibenzoylmethane in DMSO.
