Table of Contents
- 1 What is the major product obtained when phenol is treated with dilute nitric acid?
- 2 Which product will be obtained by nitration of phenol with dilute HNO3?
- 3 Which of the following is the major product formed when phenol?
- 4 Which isomer is the major product?
- 5 What happens when phenol reacts with HNO3?
- 6 What is nitration of phenol?
What is the major product obtained when phenol is treated with dilute nitric acid?
o-nitron p-nitrophenol
When phenol is treated with dilute nitric acid at room temper ed with dilute nitric acid at room temperature a mixture of o-nitron p-nitrophenol is obtained and o-nitrophenol is major product.
Which is major product in nitration of phenol?
Nitration of phenol with dilute nitric acid give the mixture of ortho-nitrophenol and para-nitrophenol. But the major product is ortho-nitrophenol(30\%–40\%). Since it is an electrophilic aromatic substitution reaction. In which Nitric acid (HNO3) is an electrophile and benzene ring is an nucleophile.
Which product will be obtained by nitration of phenol with dilute HNO3?
ortho-nitrophenol
Nitration of phenol with dilute nitric acid give the mixture of ortho-nitrophenol and para-nitrophenol. But the major product is ortho-nitrophenol(30\%–40\%). Since it is an electrophilic aromatic substitution reaction. In which Nitric acid (HNO3) is an electrophile and benzene ring is an nucleophile.
Which of the following is the major product formed when phenol is treated with dilute nitric acid at 293 Kelvin?
Phenol reacts with dilute nitric acid to give a mixture of ortho and para nitrophenol whereas phenol reacts with concentrated nitric acid to give picric acid or $2,4,6 – $trinitrophenol.
Which of the following is the major product formed when phenol?
Phenol reacts with sodium hydroxide to give sodium phenoxide. Phenoxide ion undergoes electrophilic substitution with carbon dioxide ( a weak electrophile) because phenoxide ion is more reactive than phenol. Salicylic acid is formed as a major product.
What is the product obtained when phenol is treated with bromine water?
2,4,6-tribromophenol
Therefore, the answer is – option (d) – When phenol is treated with excess bromine water, it gives 2,4,6-tribromophenol.
Which isomer is the major product?
trans isomer
Organic Chemistry E1 reactions are stereoselective – that is when a cis or a trans alkene can be formed, the trans isomer is generally the major product: This selectivity can be explained by simply comparing the stability of alkenes. Remember, trans alkenes are more stable because of the less steric strain.
Why is ortho nitro phenol major product?
Ortho-nitrophenol is stabilized by intramolecular Hydrogen-bonding between the H-atom of OH group and an oxygen of the nitro-group. Para-nitrophenol lacks such extra stability and hence, is relatively less stable than o-nitrophenol. Hence, the major product is o-nitrophenol.
What happens when phenol reacts with HNO3?
With dilute nitric acid: Phenol reacts with dilute nitric acid at room temperature to give a mixture of 2-nitrophenol and 4-nitrophenol. With concentrated nitric acid: With concentrated nitric acid, more nitro groups substitute around the ring to give 2,4,6-trinitrophenol (common name: picric acid).
What is the major product of nitration of toluene?
The products of the nitration of toluene will be a mixture of ortho, meta, and para-nitrotoluene. We will determine the relative percentage of each product using gas chromatography. If the majority of the product is p and o-nitrotoluene, it can be concluded that the methyl group is an ortho-para director.
What is nitration of phenol?
Nitration of Phenols. When phenol is treated with concentrated nitric acid, the nitration results in the formation of 2, 4, 6-trinitrophenol (commonly called picric acid). Formation of 2, 4, 6-trinitrophenol.
What is the major product when phenol is treated with bromine water?
2,4,6-tribromophenolol
Phenol produces a white precipitate of 2,4,6-tribromophenolol when combined with excess bromine water.