The identity of the product formed by the reduction of cyclohexanone and the major peaks in the IR should be identified. Concept introduction: IR spectroscopy is spectroscopic method to identify the structure of organic compounds. When IR is passed through the sample, different bonds vibrate at different frequencies of IR by absorbing IR light. In IR spectrum energy in terms of wavenumber( cm -1 ) is the horizontal axis and intensity is the vertical axis. As different molecules have different bonds of varying strength so they absorb IR light of different frequencies. This results in different absorption bands in the IR spectrum characteristic to that bond. IR region is divided into 3 regions, near, mid and far IR region. The mid-IR region extends from 4000 − 600 cm -1 and it is the most important region as approximately all organic compounds absorb in this region. The allowed vibrational energy levels for IR transition are as follows: E = h ν ο ( ν + 1 ) Where, E is IR energy absorbed by a molecule. h is Planck's constant. ν ο is zero point vibrational level. ν is vibrational level with integer value of 1,2,3,4.....

Question

a) Write down the products that will occur when you extract HBr from 2-bromo-3-methyl butane in a basic medium, State the reaction conditions. Show which product is the main product. b) Does the main product show the geometric isomer, so please write together. If it shows write the isomers. c) Write the product that will be formed when the main product reacts with KMnO4 in a basic environment in cold

Answer 1

Question

Chapter 21, Problem 2Q

Interpretation Introduction

Interpretation:

The identity of the product formed by the reduction of cyclohexanone and the major peaks in the IR should be identified.

Concept introduction:

IR spectroscopy is spectroscopic method to identify the structure of organic compounds. When IR is passed through the sample, different bonds vibrate at different frequencies of IR by absorbing IR light. In IR spectrum energy in terms of wavenumber( cm-1 ) is the horizontal axis and intensity is the vertical axis.

As different molecules have different bonds of varying strength so they absorb IR light of different frequencies. This results in different absorption bands in the IR spectrum characteristic to that bond.

IR region is divided into 3 regions, near, mid and far IR region. The mid-IR region extends from 4000−600 cm-1 and it is the most important region as approximately all organic compounds absorb in this region.

The allowed vibrational energy levels for IR transition are as follows:

E=hνο(ν+1)

Where,

E is IR energy absorbed by a molecule.

h is Planck's constant.

νο is zero point vibrational level.

ν is vibrational level with integer value of 1,2,3,4.....

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