The Reimer-Tiemann reaction involves a

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The Reimer-Tiemann reaction involves the reaction of phenol with chloroform $(CHCl_3)$ in the presence of an aqueous base ($NaOH$ or $KOH$).In the

Vedclass · Accepted Answer

Carbene intermediate

Vedclass · Answer

(B) The Reimer-Tiemann reaction involves the reaction of phenol with chloroform $(CHCl_3)$ in the presence of an aqueous base ($NaOH$ or $KOH$).In the first step,the base abstracts a proton from chloroform to form a trichloromethyl carbanion $(:CCl_3^-)$,which subsequently loses a chloride ion to generate dichlorocarbene $(:CCl_2)$ as an electrophilic intermediate.This dichlorocarbene then attacks the phenoxide ion to form the product.Therefore,the correct answer is $(B)$.

Similar Questions

In the Liebermann nitroso reaction,what is the sequence of color changes in phenol?

What is the $IUPAC$ name of hydroquinone?

Rank the following compounds in the order of increasing acidity:
$(I)$ Cyclohexanol
$(II)$ Cyclohexylamine
$(III)$ Phenol

Identify $(C)$ in the reaction$(s)$:
$p\text{-toluidine}$ $\xrightarrow[{0\,^{\circ}C}]{{NaNO_2/HCl}}\,(A)\,$ $\xrightarrow{{{H_2}O, \Delta }}\,(B)\,$ $\xrightarrow[{(ii)\,dil.\,HCl}]{{(i)\,CHCl_3, KOH, \Delta }}\,(C)$

Identify the missing reactant in the following reaction: $(?) + H^+ \xrightarrow{H_2O} \text{Salicylic acid} + CH_3COCH_3$

Vedclass Test Series

Exam Paper Generator

Online Exam Module