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The conformational behavior of 2-subtituted 1,3-dithianes 1-3 (Y = SC 6 H 5 , CO 2 Et, COC 6 H 5 ) was studied by 13 C NMR spectroscopy in the 228-318 K temperature range. Plots of ln K versus 1/T are linear, permitting evaluation of the enthalpic and entropic contributions to the S-C-Y anomeric effects in these heterocycles. Ab initio Density...
Preparation and complete characterization of 16 2,6-disubstituted halobenzenes, including nine new compounds, from two common starting materials is described. Seven of the new compounds contain one or two propylthio groups, which have been introduced in two ways. Direct reaction of arenediazonium salts with 1-propanethiolate gives yields comparable to those obtained in a three-step method through...
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