JEE Main20209 Jan 2020Morning ShiftChemistryGeneral Organic ChemistryActual
The increasing order of basicity for the following intermediates is (from weak to strong)
Options
- Ai i i < i < i i < i v < v
- Bv < i < i v < i i < i i i
- Cv < i i i < i i < i v < i
- Di i i < i v < i i < i < v
Correct answer
C. v < i i i < i i < i v < i
Step-by-step solution
Basicity is inversely proportional to electronegativity. Higher the electron affinity or core charge of an atom, the less likely it is to donate its electrons to a proton. Greater the delocalization of electrons that could potentially donate to a proton, the less able they are to donate. Greater the electron-withdrawing effects in another part of a molecule, the less likely the electrons on a particular atom are to donate.