Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions?
(R = Alkyl substituent)
A.
Stability of alkene
Greater the number of alkyl groups attached to the doubly bonded carbon atoms, more stable is the alkene. Hence, given alkene follow the following order of stability.
Hence, faster hydrogenation in
The least energetic conformation of cyclohexane is:
Boat form
Half chair form
Chair form
Twisted form
By which one of the following compounds both CH4 and CH3 - CH3 can be prepared in one step?
CH3I
CH3OH
CH3CH2I
C2H5OH
The reduction of 4-octyne with H2 in the presence of Pd/CaSo4 quinoline gives:
trans-4-octene
cis-4-octene
a mixture of cis and trans-4-octene
a completely reduced product C8H18
Addition of which of the following reagents to alkene is stereospecific:
I.Br2 II. KMnO4
III. BH3 THF/H2O2.NaOH
Select the correct reagent:
Both I and II
Both II and III
Both I and III
I, II and III
An unknown silver salt of monoacidic alkyne contains 67.08% silver. The structure of the alkyne is:
What is obtained, when potassium succinate soluton is electrolysed ?
Ethane
Ethene
Ethyne
All of these
CH3COOH CH2BrCOOH
This reaction is called
Schotton-Bauman reaction
Finkelstin reaction
Hell-Volhard-'Zelinsky reaction
none of the above