Question

How to solve these problems

- 1 c) Sony (2) HANI NH2 one has a stronger basic? c/) and is compare to R-NH2 which Resmant structural formula NaCN, DNO, 2 (i) (CH₂ CH₂ CH₂ BY unor PliAlta, Eto - Note, CH CHOM tints a conta Bra Noort, Hoy? Mk DME lip Cats Chache Br

Answer 1

SOLN 1

Basicity is the tendency to gain proton H+

so more electron rich the system is more will be the available electron density and hence greater will be the basicity

(2) group is called as "guanidine" group whichinfactis the most strongest base in whole organic chemistry

It is because resonance i.e +M of lone pair of both N creates excessive electron density on 3rd Sp2 N due to which it becomes highly electron rich hence higher will be the basicity

In the (1) there are only two nitrogen though in resonance is less basic than guanidine

NH NH NH "NH2 `NH2 *HN H2N "NH2 НaN guanidine due to resonance by both N electron density is highly increased hence become most basic

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