Hydrogen Peroxide → 1-Nitro2-methylthio-2-methylsulphinylethylene

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Reaction Steps

Hydrogen peroxide (30%, 100 volume, 113 ml) was added over 15 minutes to a stirred solution of 1,1-bis-methylthio-2-nitroethylene (165 g) in acetic acid (4,500 ml) at 60°, and the mixture was stirred at 60° for 17 hours. The mixture was evaporated to a residue which was crystallized from butanone to give the title product as a mixture of the "Z" and "E" isomers m.p. 137°-143°. Further recrystallisation gave one isomer 145°-148° and the mother liquors were evaporated to a residue which was recrystallised from dimethoxymethane to give the other isomer m.p. 90°-93°.

Provenance & Evidence