Use Coupon: CART20 and get 20% off on all online Study Material

Total Price: R

There are no items in this cart.
Continue Shopping
Get instant 20% OFF on Online Material.
coupon code: MOB20 | View Course list

Get extra R 500 off


can u explain the following reactions -

A) Vilsmeier-haack reaction

B) Gattermann koch reaction

C) riemer tiemann reaction

D) Kolbe Schmitt reactin

D) pechmann condensation reaction

E) Lehmstedt-Tanasescu reaction

F) Tscherniac-Einhorn reaction

6 years ago


Answers : (1)


Dear student

The Gattermann-Koch reaction, is a  reaction in which CO and hydrochloric acid are used to produce a benzaldehyde-derivative from a benzene-derivative in one step.Benzaldehyde and many aromatic aldehydes are conveniently synthesized by this reaction. Presence of traces of copper chloride are also needed.


Please feel free to ask your queries here. We are all IITians and here to help you in your IIT JEE preparation.

All the best.

Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.

Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..


Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

5 years ago

Post Your Answer

Other Related Questions on Organic Chemistry

What is the decreasing order of +I effect for following: 1. -CH 2 -CH 2 -O - 2.-O - 3. -CH 2 -O -
decreasing order of +I effect for: given compounds would be: 1> 3 > 2 as O- shows highest and maximum +I effect.
Vikas TU one month ago
chemical bonding molecular structure.covalent bondi,Ionic bond,hybridization
A covalent bond , also called a molecular bond , is a chemical bond that involves the sharing of electron pairs between atoms. These electron pairs are known as shared pairs or bonding...
Umakant biswal 28 days ago
How many asymmetric carbons are present in a)1,2-dimethylcyclohexane b)3-methylcyclopentane c)3-methylcyclohexane
@ gosula an assymetrric atom is a carbon atom that is attached to four diffrent types of atoms ,or group of atoms . so, as far as 1,2 – dimethyl cyclohexane is considered , then there is 0...
Umakant biswal one month ago
Monochromatic radiation of wavelength λ is incident on a hydrogen sample in ground state.Hydrogen atoms absorb a fraction of light and subsequently emit radiation of six different...
from the eqn. for ground state n(n-1)/2 = 6 n^2 – n – 12 = 0 n^2 – 4n + 3n – 12 = 0 (n-4) (n+3) = 0 n = 4 Therfore, 1/ λ = R*1^2(1/1^2 – 1/4^2) 1/ λ = R*(1 – 1/16) => 15R/16 λ = 16/15R =...
Vikas TU 24 days ago
Why agcl is colourless while agbr is pale yellow and agi is dark yellow
@ lokesh we can explain it with the help of two ways 1- the cations are same , so, the deciding factors are anions only , more the size of anion , more will be the polarisation , and more...
Umakant biswal 24 days ago
Calculate relative rate of effusion of SO2 to CH4,if the mixture obtained by effusing out a mixture with molar ratio nso2/nch4=8/1 for three effusing steps.
First U must know the Rate of effusion formulae. That is: R = PA/root(MT) For SO2, R1 = P1A/root(64T)................(1) P1V = 8nRT..............(2) For CH4, R2 =...
Vikas TU 24 days ago
View all Questions »

  • Complete JEE Main/Advanced Course and Test Series
  • OFFERED PRICE: R 15,000
  • View Details
Get extra R 3,750 off

Get extra R 500 off

More Questions On Organic Chemistry

Ask Experts

Have any Question? Ask Experts

Post Question

Answer ‘n’ Earn
Attractive Gift
To Win!!!
Click Here for details