Consider the following reaction sequence:(CH_ | vedclass

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

Question

(C) Step $1$: Ozonolysis of $2-$methylpropene $(CH_3)_2C=CH_2$ gives acetone $(CH_3COCH_3)$ and formaldehyde $(HCHO)$.$(CH_3)_2C=CH_2 \xrightarrow[	e

Vedclass · Accepted Answer

but$-3-$en$-2-$one

Vedclass · Answer

(C) Step $1$: Ozonolysis of $2-$methylpropene $(CH_3)_2C=CH_2$ gives acetone $(CH_3COCH_3)$ and formaldehyde $(HCHO)$.$(CH_3)_2C=CH_2 \xrightarrow[	ext{(2) } Zn/H_2O]{	ext{(1) } O_3} CH_3COCH_3 (X) + HCHO (Y)$Step $2$: The reaction of acetone with formaldehyde in the presence of dilute $NaOH$ and heat is an aldol condensation reaction.Acetone has $\alpha$-hydrogens,so it acts as the nucleophile,and formaldehyde acts as the electrophile.The product formed is $4-$hydroxybutan$-2-$one $(CH_3COCH_2CH_2OH)$.Upon heating $(\Delta)$,it undergoes dehydration to form but$-3-$en$-2-$one $(CH_3COCH=CH_2)$.However,the question asks for the product '$Z$' formed after the reaction with dilute $NaOH$ and $\Delta$. The aldol product is $4-$hydroxybutan$-2-$one,and the dehydrated product is but$-3-$en$-2-$one.Given the options,the $IUPAC$ name of the final dehydrated product '$Z$' is but$-3-$en$-2-$one.

Column-$I$ (Reactants)	Column-$II$ (Products)
$(A)$ $HCHO + \text{Cyclohexyl-MgBr} \rightarrow X \xrightarrow{H_2O} Y$	$(i)$ $\text{Benzenesulfonic acid}$
$(B)$ $\text{2-oxocyclohexylacetate} \xrightarrow{NaBH_4}$	$(ii)$ $\text{Cyclohexylmethanol}$
$(C)$ $HCHO + CH_3-CH_2-CH(CH_3)-CH_2-MgBr \rightarrow X \xrightarrow{H_2O} Y$	$(iii)$ $\text{2-(2-hydroxycyclohexyl)acetate}$
$(D)$ $\text{Benzene} + \text{Oleum}$	$(iv)$ $Y = \text{3-methylpentan-1-ol}$

Consider the following reaction sequence:
$(CH_3)_2C=CH_2 \xrightarrow[\text{(2) } Zn/H_2O]{\text{(1) } O_3} X + Y$
$X + Y \xrightarrow[\text{(2) } \Delta]{\text{(1) dil. } NaOH} Z$
The $IUPAC$ name of '$Z$' is

Similar Questions

Compound $x$ having molecular formula $C_3H_6O$ is reduced by Red $P/HI$ to give compound $y$ $(C_3H_8)$. Since $x$ reduces Tollen's reagent,what is the possible structure of $x$?

The reaction $CH_3CHO \xrightarrow[Zn(Hg) / \text{Conc. } HCl]{[H]} CH_3CH_3$ is:

Both acetaldehyde and acetone (individually) undergo which of the following reactions?
$A$. Iodoform Reaction
$B$. Cannizzaro Reaction
$C$. Aldol condensation
$D$. Tollen's Test
$E$. Clemmensen Reduction
Choose the correct answer from the options given below:

$A$ mixture of benzaldehyde and formaldehyde on heating with aqueous $NaOH$ solution gives:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Consider the following reaction sequence:$(CH_3)_2C=CH_2 \xrightarrow[\text{(2) } Zn/H_2O]{\text{(1) } O_3} X + Y$$X + Y \xrightarrow[\text{(2) } \Delta]{\text{(1) dil. } NaOH} Z$The $IUPAC$ name of '$Z$' is