Match the column I with column II and mark the correct option from the codes given below.
Codes

i ii iii iv

a. q, s p, r p r, s

b. q, s s p, s q, s

c. p q, r s p

d. p, r q, s p, r q

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Solution

The correct option is A a
(i) Due to 'S' at $β$ -position, neighbouring group participatic occur giving net retention (twice $S_{N} 2$ inversion).

(ii) $O H$ and $B r$ are not at anti periplanar position so $S_{N} 2$ occurs at $α -$ carbon gives inversion and product is meso diol which is achiral.

(iii) No neighouring group present at substrate and the nucleophile is a strong one so it goes by $S_{N} 2$ hence, inversion.

(iv) Show neighbouring group effect due to $O A c$ group and the product formed is achiral.

Hence, $(i) \to (q, s), (i i) \to (p, r), (i i i) \to (p), (i v) \to (r, s)$

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	i	ii	iii	iv
a.	q, s	p, r	p	r, s
b.	q, s	s	p, s	q, s
c.	p	q, r	s	p
d.	p, r	q, s	p, r	q

Match the column I with column II and mark the correct option from the codes given below. Codes i ii iii iv a. q, s p, r p r, s b. q, s s p, s q, s c. p q, r s p d. p, r q, s p, r q

Match the column I with column II and mark the correct option from the codes given below.
Codes

i ii iii iv

a. q, s p, r p r, s

b. q, s s p, s q, s

c. p q, r s p

d. p, r q, s p, r q