DISUBSTITUTED cyclopropenones are now a wellestablished class1 and evidence for a ring current in the system has been deduced from the observed deshielding of the a-and, $- methylene protons in aliphatic substituents and of the ovtko-protons in aromatic substituents. Hitherto, however, neither cyclopropenone itself nor monosubstitu ted cyclopropenones have been available in order to examine the degree of the deshielding of a proton ...
![N-[(E)-3-nitrosooct-2-en-2-yl]hydroxylamine Structure](https://image.chemsrc.com/caspic/156/1844-13-9.png)
