Reaction #2069933

Reaction equation

Thianthrene

nitric acid

→

thianthrene-S-oxide

Solvents

water

acetic acid

Conditions

Workup

1. 1
   Otherthe reaction
2. 2
   Otherthe reaction solution obtained
3. 3
   Otherto precipitate a crystal
4. 4
   FiltrationThe crystal was collected by filtration
5. 5
   Otherrecrystallized from acetonitrile

Procedure

Thianthrene (20 g) was refluxed in 300 ml of acetic acid, and 36 ml of dilute nitric acid was gradually added dropwise thereto. After allowing the reaction to proceed for 5 hours, the reaction solution obtained was poured in 1.2 liter of water to precipitate a crystal. The crystal was collected by filtration and then recrystallized from acetonitrile to obtain 12 g of thianthrene-S-oxide. 1H-NMR (400 MHz, CDCl3): δ 7.42 (t, 2H), 7.56 (t, 2H), 7.63 (d, 2H), 7.93 (d, 2H).

Source