Question

a compound boiled at 166-169C and contain sulfur no nitrogen or halogen. it was insoluble in water but soluble in dilute sodium hydroxide solution. its sodium derivative react with 2,4-dinitrochlorobenzene to give a compound melting at 118-119C. when allowed to stand in air, the orginal compound was alowly oxidized to a derivative melting at 60-61C

The H NMR spectrum of air oxidation product showed only $\delta$ 7.2-7.7, m. the H NMR spectrum of the orginal compound showed $\delta$ 3.39, 1H, s; $\delta$? 7.12, 5H, s

Answer 1