Synthesis of 2-exo-(4-nitro-phenylthio)-5-oxo-4-oxa-tri-cyclo[4.2.1.0<sup>3,7</sup>]nonan-9-endo-carboxylic acid
The method of 2-(4-nitro-phenylthio)-5-oxo-4-oxa-tricyclo[4.2.1.0<sup>3,7</sup>]nonan-9-carboxylic acid synthesis from benzenesulphenyl chloride and 4-nitrophenylsulphenyl chloride has been developed.