Which of the following is treated with NaNH2 in liquid NH3?

Nucleophilic substitution in the pressence of a strong base like NaNH2 takes place through elimination-addition or benzyne mechanism as explained below. In this reaction both o-and m-bromonaisole give the same benzyne intermediate which on the addition of NH3 gives m-anisidine.

How does chlorobenzene react with NaNH2 and NH3?

When chlorobenzene is treated with NaNH2 in liquid ammonia at 196K, aniline is formed.

Which of the following compounds is the major product when O chlorotoluene reacts with Sodamide in presence of ammonia?

o-Chlorotoluene reacts with sodamide in liquid NH_(3) to give o-toluidine and m-toluidine.

What does NaNH2 do in reaction?

As a strong base, NaNH2 will deprotonate alkynes, alcohols, and a host of other functional groups with acidic protons such as esters and ketones. As a base, it’s often used in situations where a strong, small base is required.

Which alkyne does not react with Na or NaNH2?

Sodamide (NaNH2) is a strong base which can react with terminal alkynes since terminal alkynes have acidic proton attached to the carbon bearing the triple bond. This kind of proton is not obtainable in non-terminal alkynes,and hence, non-terminal alkynes do not react with sodamide.

What is Birch reduction alkynes?

The Birch Reduction is a process for converting benzene (and its aromatic relatives) to 1,4-cyclohexadiene using sodium (or lithium) as a reducing agent in liquid ammonia as solvent (boiling point: –33°C) in the presence of an alcohol such as ethanol, methanol or t-butanol.

What does nanh2 do to alkynes?

Which of the following compound is the major product when O chlorotoluene?

Answer: p-Chlorotoluene first gives benzyne with methyl as substituent. When -NH2 attacks at carbon which is bearing triple bond it gives mixture of meta and para-toluidine. Major product is m-toluidine because carbanion formed at meta position by attack of nucleophile is more stable comapre to para position.

What happens when toluene reacts with cl2 in presence of fecl3?

When toluene reacts with chlorine in the presence of ferric chloride it gives o-chlorotoluene and para-toluene and hydrochloride as the products.

What is the balanced equation for c6h5c2h5 + O2?

For example, C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but XC2H5 + O2 = XOH + CO2 + H2O will. Compound states [like (s) (aq) or (g)] are not required. You can use parenthesis () or brackets [].

What happens when Nana reacts with chlorobenzene?

Na in NH3 (l) generates a very strong base NaNH2. In the presence of NaNH2, chlorobenzene undergoes a nucleophilic aromatic substitution to give phenylamine (aniline), C6H5NH2. This reaction proceeds through a benzyne intermediate.

How do you balance a chemical equation in chemistry?

To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. The balanced equation will appear above. Use uppercase for the first character in the element and lowercase for the second character.