Identify the reagents P and Q in the followin | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The reaction sequence involves the conversion of an ester $(CH_3COOCH_3)$ to an aldehyde $(CH_3CHO)$ and vice versa.$1$. For the conversion of est

Vedclass · Accepted Answer

$DIBAL-H$ followed by $H_2O$ and $Al(OCH(CH_3)_2)_3$

Vedclass · Answer

(A) The reaction sequence involves the conversion of an ester $(CH_3COOCH_3)$ to an aldehyde $(CH_3CHO)$ and vice versa.$1$. For the conversion of ester to aldehyde $(P)$,$DIBAL-H$ (Diisobutylaluminium hydride) is the standard reagent used at low temperature $(-78^{\circ}C)$ followed by hydrolysis $(H_2O)$.$2$. For the conversion of aldehyde to ester $(Q)$,the Tishchenko reaction is used. The Tishchenko reaction involves the disproportionation of an aldehyde to an ester in the presence of an alkoxide catalyst,such as aluminium isopropoxide,$Al(OCH(CH_3)_2)_3$.

Identify the reagents $P$ and $Q$ in the following reaction sequence:

Similar Questions

Which of the following is reduced by $Zn-Hg/HCl$ to give the corresponding hydrocarbon?

If formaldehyde and potassium hydroxide are heated,then we get

$OHC-CH_2-CH_2-CH_2-CH_2-CHO \xrightarrow{OH^{-} / \Delta} \text{Product } (A) \text{ is:}$

Predict the products formed when cyclohexanecarbaldehyde reacts with the following reagents:
$(i)$ $PhMgBr$ and then $H_3O^{+}$
$(ii)$ Tollens' reagent
$(iii)$ Semicarbazide and weak acid
$(iv)$ Excess ethanol and acid
$(v)$ Zinc amalgam and dilute hydrochloric acid

Compound $(X)$ with molecular formula $C_4H_8O$ reacts with $2,4-DNP$ to form a derivative and gives a negative haloform test. The compound $(X)$ is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module