Monosubstituted cyclopropenones from terminal acetylenes

NJ McCorkindale, RA Raphael, WT Scott…

Index: McCorkindale,N.J. et al. Chemical Communications (London), 1966 , # 5 p. 133 - 134

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Abstract

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 ...