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CH-=CHunderset(Hg^(2+))overset(H(2)SO(4)...

`CH-=CHunderset(Hg^(2+))overset(H_(2)SO_(4)(dil)")rarr[A]underset(H_(2)O //H^(+))overset(CH_(3)MgBr)rarr[B]overset(H_(2)Cr_(2)O_(7)//H_(2)SO_(4))rarr[C]`

Text Solution

Verified by Experts

`underset("Ethyne")(CH-=CH)underset(H_(2)SO_(4)//Hg^(2+))overset(H_(2)O)rarrunderset("Ethanal[A]")(CH_(3)CHO)underset(H_(2)O //H^(+))overset(CH_(3)MgBr)rarrunderset("Propan-2-ol[B]")(CH_(3)overset(OH)overset(|)(C)HCH_(3))underset("Oxidation")overset(K_(2)CrO_(2)O_(7)//H_(2)SO_(4))rarrunderset("Propanone"[C])(CH_(3)COCH_(3))`
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CH=CHunderset(H_(2)SO_(4))overset(HgSO_(4))rarrAunderset(H_(2)O)overset(CH_(3)MgBr)rarrBoverset(P//Br_(2))rarrC. Here C is :

In the following reaction sequence Ph -C -= CH underset(Hg^(2+)) overset(aq.H_(2)SO_(4)) rarr A underset(2.H_(2)O)overset(1.CH_(3)Mgl)rarr B the product (B) is

CH_(3)CH_(2)CHOunderset(H_(2)O)overset(CH_(3)MgBr)rarr[A]underset("Heat")overset(H_(2)SO_(4))rarr[B]overset(H_(2)O)rarr[C]overset("KOH(alc)")rarr[D]

CH_(3)CHOoverset(Ag_(2)O)rarr[A]overset(PCl_(5))rarr[B]underset(Pd//BaSO_(4))overset(H_(2))rarr[C]overset(CH_(3)MgBr)underset(H_(2)O //H^(+))rarr[D]

Identify A to D in the following reactions : [D] underset(H_(3)O^(+))overset(CH_(3)MgBr)(larr)[C] overset(HgSO_(4)//H_(2)SO_(4))(larr)CH_(3)C equiv CH underset(H_(2)O_(2)//OH^(-))overset(BH_(3)//THF)(rarr) [A] overset(CH_(3)MgBr//H_(3)O^(+))(rarr) [B]

(CH_(3))_(2)+HCNrarr[A]overset(H_(3)O^(+))rarr[B]underset("Heat")overset(H_(2)SO_(4))rarr[C]

CH-=CHunderset(HgSO_(4)//H_(2)SO_(4))overset(H_(2)O)to[A]overset(LiAlH_(4)//H)to[B]underset(443 K)overset(H_(2)SO_(4)(conc.))to[C]

Knowledge Check

  • CH=CHunderset(H_(2)SO_(4))overset(HgSO_(4))rarrAunderset(H_(2)O)overset(CH_(3)MgBr)rarrBoverset(P//Br_(2))rarrC. Here C is :

    A
    `CH_(3)CH(Br)CH_(3)`
    B
    `CH_(3)-CH_(2)-CH_(2)-Br`
    C
    `CH_(2)=CH-Br`
    D
    `Br-CH=CH-CH_(3)`

  • HC-=CHunderset(H_(2)SO_(4))overset(HgSO_(4))rarr overset(CH_(3)CH_(2)CH_(2)Br)rarr overset(PBr_(3))rarr

    A
    `CH_(3)CHBrCH_(3)`
    B
    `CH_(3)CH_(2)CH_(2)Br`
    C
    `CH_(2)=CHBr`
    D
    `BrCH=CH-CH_(3)`

  • In the following sequence of reactions, the end product is - HC-=CHoverset(Hg^(2+)//H_(2)SO_(4))rarr(A) underset((H_(2)O))overset(CH_(3)M_(g)X)rarr(B) overset((O))rarr(C)

    A
    acetaldehyde
    B
    isopropyl alcohol
    C
    acetone
    D
    ethyl alcohol