Stearic effect - reactivity of aldehydes and keto, Chemistry

Assignment Help:

Stearic effect - relative reactivity of aldehydes and keto

The size of the alkyl group is much more than that of hydrogen. In aldehydes, there is one alkyl set although in ketones, there are two alkyl sets linked to the carbonyl group. The alkyl groups are bigger as compared to a hydrogen atom and these cause hindrance to the attacking group. This is termed as stearic hindrance. As the size and number of the alkyl sets increase, the hindrance to molest of nucleophile as well increases and the reactivity of a carbonyl decreases. The short of hindrance in nucleophilic attack is other reason for the better reactivity of formaldehyde. So, the reactivity follows the order:

2435_Stearic effect.png


Related Discussions:- Stearic effect - reactivity of aldehydes and keto

What is the stability order of li2, what is the stability order of Li2, H2,...

what is the stability order of Li2, H2, B2 B.O of Li2 is 1 B.O of H2 is 1 B.O of B2 is also 1 so for stability order u need to see the no of electrons in antibonding orbitals mo

Ethane, Laboratory preparation of ethane

Laboratory preparation of ethane

Photochemistry., notes of chemiluminesence, photophysical process,energy ...

notes of chemiluminesence, photophysical process,energy transfer in photochemical reactions

Ch 2 atomic structure of class 11, If the velocity of hydrogen molecule is5...

If the velocity of hydrogen molecule is5*10^4 cm/sec tjen its de broglie wavelength is

Illustrate born-haber cycle, Q. Illustrate Born-Haber cycle? Boron is a...

Q. Illustrate Born-Haber cycle? Boron is always covalent and does not   form,B 3+ ions, because' the energy required to remove three electrons is very high.  Many simple compo

Method for detection of elements - oxygen, Method for Detection of Elements...

Method for Detection of Elements - Oxygen There is no any type of satisfactory qualitative method for the detection of oxygen. Though, its presence can be inferred indirectly.

The energy of covalent o-h, Bond energy of covalent O-H  bond in water is: ...

Bond energy of covalent O-H  bond in water is: (1) Greater than bond energy of H bond (2) Equal to bond energy of H bond (3) Less than bond energy of H bond (4) None o

Nomenclature of organic compounds - trivial system, Nomenclature of organic...

Nomenclature of organic compounds - Trivial System The meaning of Nomenclature is assignment of names to organic compounds. There are two major systems of nomenclature of org

Objectives of transition elements of the f-block, Q. Objectives of transiti...

Q. Objectives of transition elements of the f-block? After studying this unit you should be able to: distinguish between transition and inner-transition elements, d

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd