The Wonders of Chemistry: HISTORY OF PERIODIC TABLE

The Wonders of Chemistry: HISTORY OF PERIODIC TABLE: Most of us are familiar with the work done by Mendeleev and Moseley in the development of the periodic table. But there are some oth...

The Wonders of Chemistry: HISTORY OF PERIODIC TABLE

The Wonders of Chemistry: HISTORY OF PERIODIC TABLE: Most of us are familiar with the work done by Mendeleev and Moseley in the development of the periodic table. But there are some oth...

HISTORY OF PERIODIC TABLE

Most of us are familiar with the work done by Mendeleev and Moseley in the development of the periodic table. But there are some other genius minds who contributed towards a logical arrangement of elements.

The Wonders of Chemistry: How to Calculate Oxidation state

The Wonders of Chemistry: How to Calculate Oxidation state: Oxidation and reduction are two processes encountered during chemical reactions. Generally, oxidation involves the loss of electrons,...

How to Calculate Oxidation state

Oxidation and reduction are two processes encountered during chemical reactions. Generally, oxidation involves the loss of electrons, while reduction means the gain of electrons. During this loss and gain of electrons the electronic distribution on atoms in a molecule changes. Oxidation state or oxidation number therefore is the degree of loss of electrons by an atom.

HOW TO CALCULATE THE YIELD OF A REACTION

HOW TO CALCULATE THE YIELD OF A REACTION

In chemistry, especially in organic chemistry, it is very important to calculate the yield of any reaction. It is reported in percentage. The percent yield of a reaction is an indication of the feasibility of reaction, reactivity and compatibility of the reactants, solvents, and reagents used in the reaction, and validity of the methodology employed in the reaction. This is the reason why scientists talk big about the high yields of products in their synthetic accomplishments. Percent yield is calculated from the following simple equation:

C=C Bond forming Reactions: Part II

C=C bond forming reactions

4. Alkene Metathesis

Alkene metathesis or olefin metathesis is a C=C forming reaction in which the components of two alkenes are redistributed to form a new C=C bond. This fascinating reaction led to the award of Nobel Prize to Chauvin, Grubbs, and Schrock collectively in 2005. They have worked enormously on the reaction mechanism and kinetics of alkene metathesis.

C=C Bond Forming Reactions: Part 1

C=C bond forming reactions

1.     Wittig Reaction

This Nobel Prize winning reaction was discovered by George Wittig. It involves the reaction of an aldehyde or ketone with phosphorus ylides, leading to the formation of a double bond between carbon atoms.

The Wonders of Chemistry: Organic Chemistry: C-C Bond Forming Reactions, Par...

The Wonders of Chemistry: Organic Chemistry: C-C Bond Forming Reactions, Par...: 8.    Reformatsky Reaction This reactions is the condensation of a-halo esters with aldehydes or ketones in the presence of zinc to yield...

Organic Chemistry: C-C Bond Forming Reactions, Part III

8.   Reformatsky Reaction
This reactions is the condensation of a-halo esters with aldehydes or ketones in the presence of zinc to yield b-hydroxy esters.