Home › JEE Main › Chemistry › Haloalkanes and Haloarenes › Grignard reagent: R-X + Mg in dry ether gives:
Grignard reagent: R-X + Mg in dry ether gives:
AR-OH
BR-Mg-X (organomagnesium halide; powerful nucleophile/base)
CR-Cl
DNo reaction
Answer & Solution
Correct answer: B. R-Mg-X (organomagnesium halide; powerful nucleophile/base)
Grignard reagent: R-MgX. Forms in dry ether. Carbon is δ-, magnesium δ+. Acts as carbanion equivalent. Reacts with H₂O (destroys reagent: → R-H), CO₂ (→ RCOOH), carbonyls (→ alcohols).
Related questions
$\mathrm{CHCl_3}$ (chloroform) on prolonged storage in the air may be partially oxidised tChlorobenzene ($\mathrm{C_6H_5Cl}$) is MUCH LESS reactive toward nucleophilic substitutionSAYTZEFF'S RULE for elimination reactions states thatWhen 1-bromopropane is heated with concentrated alcoholic KOH, the major product isA GRIGNARD REAGENT is formed by reacting an alkyl halide withThe IUPAC name of $\mathrm{(CH_3)_2CH{-}CH_2Br}$ isA SN2 reaction on a chiral carbon (with a single stereocentre) results inThe reactivity of haloalkanes toward nucleophilic substitution generally follows the order