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Ketones (R-overset(O)overset("||")C-R') ...

Ketones `(R-overset(O)overset("||")C-R')` can be obtained in one step by (where R and R' are alkyl groups)

A

hydrolysis of esters

B

oxidation of primary alcohols

C

oxidation of secondary alcohols

D

reaction of alkyl halides with alcohols.

Text Solution

Verified by Experts

The correct Answer is:
C
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Why can't ketones be prepared from R-overset(O)overset(||)C-Cl and Grignard reagent, RMgCl, altough they can be prepared from RCOCl and R_(2)Cd ?

A : H_(2)N-overset(O)overset(||)(C)-CH_(3) can give iodoform reaction. R : Cl-overset(O)overset(||)(C)-CH_(3) can also give iodoform reaction due to presence of -COCH_(3) group.

Why does R_3P=0 exist but R_3N=0 does not (R= alkyl group)?

Conjugation of electron withdrawing groups, e.e., -CHO, -overset(O)overset(||)C-R,-overset(O)overset(||)CRgt-overset(O)overset(||)C-OR,-C-=N,-NO_(2) activates nudeophilic attack in halobenzene. The order of reactivity of these groups is :

Knowledge Check

  • R-overset(O)overset(||)C-Cl+ZtoR-overset(O)overset(|)C-R The reagent Z is :

    A
    `R_(2)CuLi`
    B
    `R_(2)Cd`
    C
    `(Ph_(3)P)_(3)RhCl`
    D
    `H_(2)-Pd//BaSO_(4)`

  • R-overset(O)overset(||)(C)-Runderset(("catalyst"))overset(HCN)hArrR-underset(CN)underset(|)overset(OH)overset(|)(C)-R Which of following can be used as a catalyst in the above reaction?

    A
    `Cl^(-)`
    B
    `CH_(3)-overset(O)overset(||)(C)-O^(-)`
    C
    `Et-O^(-)`
    D
    `HSO_(4)^(-)`