Test:296 QNo:3

Reaction of HCHO and CH3—CHO in the presence of KOH solution is called

4 Answers

13
Avik ·

The options given were-
a)Aldol
b)Crossd Aldol
c)Crossed CanniZ.
d)CanniZzaro

13
Avik ·

Maine kya answer diya...? Yeh toh Qn mein given options the :D

Waise, toh all 4 are possible...but i wud say b),c)....But answer is only b).

39
Pritish Chakraborty ·

Ans should be a). Aldol in only one direction. HCHO has no alpha hydrogen to lose. Ethanal will lose the alpha hydrogen, form the nucleophile which adds to C=O of HCHO and itself. So two products possible.
But I think we would have cannizzaro side products of HCHO ..

13
Avik ·

Yeah, thts wht i thot...since the conc. of KOH aint mentioned.

We wud get a mixture of 4 sorts of products then.

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