What Not to Do with Grignard Reagents
Trending Questions
Q. 26. Explain when ethanolic KCN reacts with RX from RCN and ethanolic AgCN reacts with RX form RNC why?
Q.
Rectified spirit obtained by fermentation contains 4.5% of water. So in order to remove it, rectified spirit is mixed with suitable quantity of benzene and heated. Benzene helps because [KCET 1987]
It is dehydrating agent and so removes water
It forms the lower layer which retains all the water so that alcohol can be distilled off
It forms an azeotropic mixture having high boiling point and thus allows the alcohol to distill over
It forms low boiling azeotropic mixtures which distill over, leaving behind pure alcohol which can then be distilled
Q. Which of the following amines will give primary alcohol with NaNO2/Conc. HCl:
(a) CH3−CH2−C|CH3−NH2
(b) CH3−CH3|C|CH3−NH2
(c) CH3−C|CH3−CH2−CH2−NH2
(d) All of these
(a) CH3−CH2−C|CH3−NH2
(b) CH3−CH3|C|CH3−NH2
(c) CH3−C|CH3−CH2−CH2−NH2
(d) All of these
- a
- b
- c
- d
Q. In the given reaction
CH3−O||C−O−CH3|C|CH3−CH3 Na/C2H5OH−−−−−−−−→ (X)+(Y)
[X] and [Y] respectively be:
(a)CH3−CH2−OH and CH3−CH3|C|CH3−OH
(b)CH3−CH2−OH and CH3−C|CH3=CH2
(c)CH2=CH2 and CH3−CH3|C|CH3−OH
(d) all the above
CH3−O||C−O−CH3|C|CH3−CH3 Na/C2H5OH−−−−−−−−→ (X)+(Y)
[X] and [Y] respectively be:
(a)CH3−CH2−OH and CH3−CH3|C|CH3−OH
(b)CH3−CH2−OH and CH3−C|CH3=CH2
(c)CH2=CH2 and CH3−CH3|C|CH3−OH
(d) all the above
- a
- b
- c
- d
Q.
Chlorination of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives
[IIT-JEE 1990]
o-cresol
p-cresol
2, 4-dihydroxy toluene
Benzyl alcohol
Q. What happens when 2-methyl-2-butene is treated with alk. KMnO4 at 373K.
