Some pairs ofions are given below. In which pair, first ion is more stable tlian second ion?
H3C-CH2-C+H-CH3 and H3C-CH2-CH-CH2
H3C-CH-CH3 and H3C-N-CH3
H3C-CH-CH3 and CH-OCH3
Which intermediate is formed in the Reimer-Tiemann reaction?
Aldehyde
Carbocation
Carbanion
Substituted benzal chloride
. Identify X, Y, and Z.
X | Y | Z |
H2C=CHCO2H | HOH2CCHOHCO2H | HOH2CCHOHCOCL |
X | Y | Z |
(H3CCH2CO)2O | H3CCH2CO2H | H3CCH2COCl |
X | Y | Z |
(H3CCO)2O | H3CCOC2H | ClCH2COCl |
X | Y | Z |
(H3CCH2CO)2O | H3CCO2H | H3CCOCl |
What is the name of the following reaction?
HCHO + HCHO CH3OH + HCOONa
Clemmensen reaction
Cannizzaro reaction
None of the options
Hell-Volhard reaction
Conversion of esters to aldehydes can be accomplished by
Stephen reduction
Rosenmund reduction
Reduction with lithium aluminium hydnde
Reduction with diisobutyl aluminium hydride
D.
Reduction with diisobutyl aluminium hydride
DIBAL (Di-isobutyl aluminium hydride)
DIBAL is a strong, bulky reducing agent. Its most useful for the reduction of esters to aldehydes.