| http://www.w3.org/ns/prov#value | - It is of interest that when the non-oxidized spiro compounds, in which one of R' and R is a substituent and the other of which is a hydrogen atom, are submitted to the 3-step process just described, it might have been expected that isotope-substitution would have occurred at position 2 rather than position 4, owing to the anticipated activation of the hydrogen atom in this position both by the su
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