uday kumar when replacing a set of groups by x (any group), and the produced structures are constitutional isomers, those groups are constitutional heterotopic groups. Take an example of 2-methylbutene. Replacing methyl at the second position and fourth C group of the main chain (methyl) one by one with x will produce constitutional isomers. Hence they would be considered constitutional heterotopic
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what is constitutional hetrotopic groups
uday kumar when replacing a set of groups by x (any group), and the produced structures are constitutional isomers, those groups are constitutional heterotopic groups. Take an example of 2-methylbutene. Replacing methyl at the second position and fourth C group of the main chain (methyl) one by one with x will produce constitutional isomers. Hence they would be considered constitutional heterotopic