NEET2017ChemistryGeneral Organic ChemistryActual
What is the correct order of basicity among the following compounds?
Options
- AII > I > III > IV
- BI > II > III > IV
- CIII > I > II > IV
- DI > III > II > IV
Correct answer
D. I > III > II > IV
Step-by-step solution
The conjugate acid formed by addition of a proton to I is stabilised by two equivalent resonance structures and hence, compound I is the most basic. Further 2^ amines (III) are more basic than 1^ amines (II) while amides (IV) are least basic due to delocalisation of lone pair of electrons of N over the CO group. Thus, the order is : I > III > II > IV.