`R-X+Mgoverset(Ether,Delta)rarroverset(delta-)R-overset(delta+)Mg-X` Grignard reagents may be prepared from `1^(@) , 2^(@)" and "3^(@)` halides as well as from vinayl and aryl halide. Vicinal dihalide and those halide which contain acidic tail do not form Grignard reagent. Which of the following halides is most reactive for the preparation of Grignard reagent?A. B. C. D.

`R-X+Mgoverset(Ether,Delta)rarroverset(delta-)R-overset(delta+)Mg-X` G

1.	`R-X+Mgoverset(Ether,Delta)rarroverset(delta-)R-overset(delta+)Mg-X` Grignard reagents may be prepared from `1^(@) , 2^(@)" and "3^(@)` halides as well as from vinayl and aryl halide. Vicinal dihalide and those halide which contain acidic tail do not form Grignard reagent. Which of the following halides is most reactive for the preparation of Grignard reagent?A. B. C. D.
Answer» Correct Answer - D

Discussion

No Comment Found

Related InterviewSolutions

In `S_(n^(2)` reaction, the first step involves the formation of :A. free radicalB. carbanionC. carbocationD. final product
The rate law for the reaction `RCl+Na(aq.)rarrROH+NaCl` is given by, rate `=K_(1)[RCl].` The rate of the reaction will be :A. doubled on doubling the concentration of sodium hydroxideB. halved on reducing the concentration of alkyl halide to halfC. decreased on increasing the temperature of the reactionD. unaffected by inceasing the temperature of the reaction
Order of rate of reaction of following compound with phenyl magnesium bromide is : `Me-overset(O)overset(||)underset(I)C-Cl, Me-overset(O)overset(||)underset(II)C-H, Me-overset(O)overset(||)underset(III)C-O-Et`A. `IgtIIgtIII`B. `IIgtIIIgtI`C. `IIIgtIgtII`D. `IIgtIgtIII`
2-Phenylethanol may be prepared by the reaction of phenyl magnesium bromide with :A. HCHOB. `CH_(3)CHO`C. `CH_(3)COCH_(3)`D.
Vinylic halides are unreactive towards nucleophilic substitution because of the following except :A. C-halogen bond is strongB. The halogen is bonded to `sp^(2)` carbonC. A double bond character is developed in the carbon-halogen bond by resonanceD. Halide ions are not good leaving groups
Which of the following reactions involve free radical as intermediate ?A. B. C. D.
Which of the following reactions involve benzyne intermediate?A. B. C. D.
Find out numbers of possible `E_(1)` products from following reaction .
Which of the following are possible intermediate in the following reaction ? A. B. C. D.
Which of the following reaction is possible ?A. `C_(6)H_(5)OH+HBrrarrC_(6)H_(5)Br+H_(2)O`B. `(CH_(3))_(3)CCl+NaOCH_(3)rarr(CH_(3))_(3)COCH_(3)+NaCl`C. D.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment