A revised structure for the product from the decomposition of an o-quinone oxime benzenesulphonate
Abstract
The product from the decomposition of 4-methoxy-o-benzoquinone 1-(O-phenylsulphonyl)oxime (1) is not 4-methoxy-1-azabicyclo[3,2,0]hept-3-ene-2,7-dione (2); it is γ-cyanomethyltetronic acid methyl ether (3).