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प्रश्न
Reaction between Grignard reagent and aldehyde other than formaldehyde leads to formation of _______________
विकल्प
primary alcohol
secondary alcohol
tertiary alcohol
optically active alcohol
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उत्तर
Reaction between Grignard reagent and aldehyde other than formaldehyde leads to formation of secondary alcohol
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संबंधित प्रश्न
Answer in brief.
Explain why p-nitrophenol is a stronger acid than phenol.
An ether (A), C5H12O, when heated with excess of hot HI produce two alkyl halides which on hydrolysis form compound (B) and (C), oxidation of (B) gave and acid (D), whereas oxidation of (C) gave a ketone (E). Deduce the structural formula of (A), (B), (C), (D), and (E).
When vapours of tert.butyl alcohol are passed over hot copper, it gives _____________
How will you bring about the following conversions?
2-methyl propan-2-ol to 2-methylpropene
How will you bring about the following conversions?
acetone to 2-methylpropan-2-ol
Write chemical reactions to convert phenol into salicyaldehyde. Write the name of the reaction. What happens when if CCl4 is used instead of CHCl3 in the above reaction.
Number of oxygen atoms present in salicylaldehyde are ______.
The CORRECT decreasing order of boiling points for isomeric primary (1°), secondary (2°) and tertiary (3°) alcohols is ____________.
Isobutylene on hydroboration followed by oxidation with hydrogen peroxide in presence of base yields ______.
Identify 'A' and 'B' in the following series of reactions.
The product 'C' in the following reaction is:
\[\ce{CH3CH2Br ->[alc. KCN] {'A'} ->[H3O^+][\Delta] {'B'} ->[i. LiAlH4][ii. H3O^+] {'C'}}\]
____________ will NOT undergo acetylation.
Identify reagents X, Y and Z.
The number of moles of hydrogen gas formed when 2 moles of 2-methylpropan-2-ol reacts with aluminium is ____________.
Which following reagent is used to obtain alkene from alcohol?
A reaction of phenol with chloroform in presence of sodium hydroxide to form salicylaldehyde is known as ____________.
Identify the role of PDC from the following.
Which among the following is not the method of preparation of phenol?
The product C in the following reaction is
The chemical test that distinguish between benzoic acid and phenol is ______.
Arrange O - H, C - H and N - H bonds in increasing order of their bond polarity.
Explain the reaction of 1° and 2° alcohol with oxidising agent chromic anhydride (CrO3).
Write the product when 1°, 2° and 3° alcohol vapours are passed over hot copper.
Write the chemical reaction when hot copper is treated with Vapours of 2° (secondary) alcohol.
The C−O−C angle in ether is about ______.
