Bissoy.com
Doctors Medicines MCQs Q&A

Pyridine undergoes nucleophilic substitution with phenyl lithium at 100℃ to give which of the following?

Pyridine undergoes nucleophilic substitution with phenyl lithium at 100℃ to give which of the following? Correct Answer 2-phenylpyridine

Nucleophilic substitution takes place preferentially at the 2- and 4- positions as the intermediate anion is stabilised by the electronegative nitrogen.

Related Questions

Pyridine undergoes nucleophilic substitution with NaNH2 at 100℃ to give which of the following?
Pyridine undergoes nucleophilic substitution with excess of NaNH2 at 100℃ to give which of the following?
Lithium forms a BCC lattice with an edge length of 350 pm. The experimental density of lithium is 0.53 g cm-3. What is the percentage of missing lithium atoms? (Atomic mass of Lithium = 7 amu)
At which position of pyridine nucleophilic substitution reaction is most preferred?
Nucleophilic substitution reaction of pyridine is most effective in which of the conditions?
In order to prepare Lithium nitride, air is passed gently over a reactor. Suppose that Nitrogen diffuse to a length 5cm before getting reacted with Lithium. Nitrogen reacts with lithium quickly so that partial pressure of Nitrogen at that point is 0. Reactor is a cylinder of length 10cm and diameter 2cm. Assume air to be a mixture of Nitrogen and Oxygen only. The temperature is 298K and total pressure 1atm. Diffusivity of N2 in O2 is 2*10-5m2/s. Calculate the Molar flux (mol/m2.s) of N2 at a distance of 2.5cm from the top with respect to an observer moving with twice the mass average velocity a direction towards the liquid surface. (R=8.205*10-5m3atmK-1mol-1). Assume z=0 at the top of the reactor.
What will be the product if 1,1-halonitroalkane undergoes nucleophilic aliphatic substitution reaction in presence of ethanol?
What will be the product if 1,1-halonitroalkane undergoes nucleophilic aliphatic substitution reaction in presence of potassiam hydroxide?
Pyridine undergoes electrophilic nitration at elevated temperatures to give the following as a major product
Which of the following statements is/are true for X?
i. X is not isoelectronic with benzene.
ii. X undergoes addition reaction with HCI.
iii. Electrophilic substitution reaction on X is much faster than that of benzene.
iv. X undergoes polymerization at 90°C