Hoffmann bromamide reaction involves conversion of a carboxylic acid amide into an amine with a loss of a carbon atom on treatment with aqueous sodium hypobromite. Thus Hoffmann result in shortening of a carbon chain. `R=overset(O)overset(||)C-NH_(2)underset(NaOH)overset(Br_(2))rarrR-NH_(2)+NaBr+Na_(2)CO_(3)` Mechanism of the reaction is : Number of moles of NaOh consumed in above reaction.A. 1B. 2C. 3D. 4

Hoffmann bromamide reaction involves conversion of a carboxylic acid a

1.	Hoffmann bromamide reaction involves conversion of a carboxylic acid amide into an amine with a loss of a carbon atom on treatment with aqueous sodium hypobromite. Thus Hoffmann result in shortening of a carbon chain. `R=overset(O)overset(\|\|)C-NH_(2)underset(NaOH)overset(Br_(2))rarrR-NH_(2)+NaBr+Na_(2)CO_(3)` Mechanism of the reaction is : Number of moles of NaOh consumed in above reaction.A. 1B. 2C. 3D. 4
Answer» Correct Answer - D `RCONH_(2)+Br_(2)+4NaOHrarrRNH_(2)`

Discussion

No Comment Found

Related InterviewSolutions

`CH_(3)-CH_(2)CH_(2)CH_(2)-CH_(3)overset(CH_(2)N_(2)//Delta)rarr`Product Which of the following product(s)is/are can be abtained in the above reaction.A. IsopentaneB. 3-Methyl hexaneC. n-pentaneD. 3-Methyl pentane
Wolff rearrangement /,brgt When a-Diazoketones are photo -irradiated or heated at high temperature or reacted with silver oxide or silver salts at room temperature, they losse nitrogen and rearrange to form ketene. The ketenes reacts rapidly with water, alcohol and amines. Therefore, the reactions called Wolff-rearrangment. `Ph-underset(14)overset(O)overset(||)C-CHN_(2)underset(H_(2)O)overset(CH_(3)OH)rarr(A)`, Product (A) is :A. `Ph-overset(14)CH_(2)-Co_(2)H`B. `Ph-CH_(2)-overset(14)Co_(2)H`C. `Ph-overset(14)Co_(2)H`D. `Ph-Co_(2)H`
Cosider the given reaction for preparation of alkyne. (Fritsch reaction). Anti group will migrate because of less steric hindrance. Rate of reaction when the halide ion :A. `I^(Θ)gtCl^(Θ)gtBr^(Θ)gtF^(Θ)`B. `I^(Θ)gtBr^(Θ)gtCl^(Θ)gtF^(Θ)`C. `F^(Θ)gtCl^(Θ)gtBr^(Θ)gtI^(Θ)`D. `F^(Θ)gtBr^(Θ)gtCl^(Θ)gtI^(Θ)`
Given is mechanism of Beakmann rearrangement. Which of the following reagent cannot used in Beckmann rearrangement ?A. TsOHB. `R-DO_(2)Cl`C. `BF_(3)`D. Ph - Li
When primary amine reacts with chloroform in ethanolic KOH, then product is :A. an isocyanideB. an aldehydeC. a cyanideD. an alcohol
Product X will be :A. B. C. D.
Product (A) is :A. B. C. D.
Product (A) is :A. B. C. D.
The orbital picture of a triplet carbene can be drown as :A. B. C. D. None of these
Product (A) will be :A. B. C. D.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment