A new carbon-carbon bond formation is possible in:

Cannizzaro reaction

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Friedel-Crafts reaction

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Clemmensen reduction

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Reimer-Tiemann reaction

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Solution

The correct options are
B Friedel-Crafts reaction
D Reimer-Tiemann reaction
In (a), no new (C-C) bond is formed.
$2 H C H O H - -- \to^{⊖} O H C O O^{⊖} + M e O H$
In (b), a new (C-C) bond is formed.

In (c), no new (C-C) bond is formed.

In (d), a new (C - C) bond is formed.

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Similar questions

A new carbon-carbon bond formation is possible in

	Column I		Column II
(A)	$R C O C H_{3} Z n - H g - --- \to H C l R C H_{2} C H_{3}$	(i)	Wolff-Kishner reduction
(B)	$2 C_{6} H_{5} C H O N a O H - --- \to C_{6} H_{5} C O O N a + C_{6} H_{5} C H_{2} O H$	(ii)	Clemmensen reduction
(C)	$C_{6} H_{6} + C H_{3} C O C l A n h . - -- \to A l C l_{3} C_{6} H_{5} C O C H_{3}$	(iii)	Friedel-Crafts reaction
(D)	$C_{6} H_{10} O (i) N H_{2} N H_{2} - ------------- \to K O H / e t h y l e n e g l y c o l, Δ C_{6} H_{12} + N_{2}$	(iv)	Cannizzaro reaction

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