When a tertiary alcohol A (C_4H_{10}O) reacts | vedclass

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(D) The reaction is a dehydration of a tertiary alcohol ($tert$-butyl alcohol) via $\beta$-elimination. When $2$-methylpropan$-2-$ol $(A)$ is heated w

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$2-$methylpropene

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(D) The reaction is a dehydration of a tertiary alcohol ($tert$-butyl alcohol) via $\beta$-elimination. When $2$-methylpropan$-2-$ol $(A)$ is heated with $20\% \ H_3PO_4$ at $358 \ K$,it undergoes dehydration to form $2$-methylpropene $(B)$ as the major product. The reaction is: $(CH_3)_3C-OH \xrightarrow{20\% \ H_3PO_4, 358 \ K} CH_2=C(CH_3)_2 + H_2O$ Thus,the $IUPAC$ name of the product $B$ is $2$-methylpropene.

When a tertiary alcohol $A$ $(C_4H_{10}O)$ reacts with $20\% \ H_3PO_4$ at $358 \ K$,it gives a compound $B$ $(C_4H_8)$ as a major product. The $IUPAC$ name of the compound $B$ is

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