Grignard Reagents
Trending Questions
Q. The correct order of reactivity of PhMgBr towards
(I) Benzophenone (II) Acetaldehyde (III) Acetone
is:
(I) Benzophenone (II) Acetaldehyde (III) Acetone
is:
- (I)>(II)>(III)
- (III)>(II)>(I)
- (II)>(III)>(I)
- (I)>(III)>(II)
Q.
Grignard reagents (RMgX) are potential sources of carbanions because of
Polar C-Mg bond
+I effect of alkyl group
Solvent properties of ether with which it is stored
Their ability of react in any medium
Q. What is the product of the following reaction?
Hex-3-ynal(i)NaBH4 (ii)PBr3−−−−−−−−−−−−−−−−−−→(iii)Mg/ether (iv)CO2/H3O+
Hex-3-ynal(i)NaBH4 (ii)PBr3−−−−−−−−−−−−−−−−−−→(iii)Mg/ether (iv)CO2/H3O+
Q. What is the mass of sodium bromate solution necessary to prepare 85.5 cm3 of 0.672 N solution when the half-cell reaction is
BrO−3+6H++6e−→Br−+3H2O
BrO−3+6H++6e−→Br−+3H2O
- 1.246 g
- 1.146 g
- 1.446 g
- 1.346 g
Q.
Alkyl halides can be converted into Grignard reagents by
[KCET 1989]
Boiling them with Mg ribbon in alcoholic solution
Warming them with magnesium powder in dry ether
Refluxing them with MgCL2 solution
Warming them with MgCL2