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Organic Reactions are chemical reactions in which organic molecules change their chemical composition. By forging a bond between the two kinds, one type having unrelated or bonded electrons “donates” an electron pair to another type that lacks an electron.
Addition reactions, elimination reactions, substitution reactions, pericyclic events, rearrangement reactions, and redox reactions are the most common types of organic chemistry reactions. Organic reactions are utilised in the production of new organic compounds in organic synthesis. Many man-made chemicals, such as pharmaceuticals, plastics, food additives, and fabrics, rely on organic processes for their synthesis.
Types of Organic Reaction
There are majorly five types of organic reaction:
- Substitution reaction
- Elimination reaction
- Addition reaction
- Radical reaction
- Oxidation-reduction reaction
1. Substitution Reaction
One atom or group of atoms swaps another atom or group of atoms in a substitution reaction, leading to the formation of a completely unique chemical. Just like the -C–Cl bond, which has a partial positive charge on the carbon atom due to the presence of strongly electronegative chlorine atoms.
2. Elimination Reaction
Many processes demand the elimination of nearby atoms. Tiny molecules are released as remnants of the creation of numerous bonds at the same time. An example of a frequent elimination reaction is the conversion of ethyl chloride to ethylene.
CH3CH2Cl → CH2= CH2 + HCl
The molecule that is removed in the aforementioned reaction is HCl, which can be generated by combining H+ from the carbon atom on the left side with Cl– from the carbon atom on the right side.
3. Addition Reaction
The total opposite of an elimination reaction is an addition reaction. In an addition reaction, the components or molecules of A and B are added to the carbon-carbon multiple bonds, which is called an addition reaction. In the reaction below, HCl is added to ethylene to form ethylene chloride.
HCl + CH2 = CH2 → CH3CH2Cl
4. Radical Reaction
Radicals and their mobility are involved in the majority of organic reactions. A free radical mechanism is involved when a halogen is added to a commonly saturated hydrocarbon. In a radical reaction, there are normally three stages: initiation, propagation, and termination. When a weak bond is broken, the reaction begins with the development of free radicals.
5. Redox Reaction
The transfer of electrons between chemical species is known as a redox reaction (the atoms, ions, or molecules involved in the reaction). Fuel combustion, metal corrosion, and even photosynthesis and cellular respiration are all examples of redox processes.
- In combination reaction two elements are combined A+B→AB
- A compound is broken down into its constituent parts in a decomposition reaction.AB→A+B .
- One or more atoms are switched out for another in a displacement process.AB+C→A+BC.
- A chemical combines with oxygen to produce carbon dioxide, water, and heat in a combustion reaction.
- A molecule is both reduced and oxidised in disproportionate reactions.
Importance of Organic Chemistry
Food Additive
Food has risen quickly in recent decades, thanks to tremendous innovation and cutting-edge technology, because it is the primary source of survival. To improve their products, these businesses require food additives. Synthetic additives are preferable to organic substances since they blend in better with meals.
2.Textile Support
Organic chemistry is significant in the textile industry as well as in the food industry. The most expensive fibre is made by silkworms. Organic derivatives are accountable for some of the most beautiful textile colours. Although the textile industry now utilises more inorganic compounds, previous chemicals depended primarily on organic sources for everything from colour to substance to pattern.
3.Main Substance
Organic chemistry is a primary constituent in many industrial goods. Polymers are a form of a chemical substance that is routinely used. Organic chemistry supports the oil and fuel industries the most, with oil and gas adding the most to a country’s budget. Ammonia, nitrogen, methane, and octane are also applied in a wide variety of industries.
4.Necessary in Pharmaceutical
A considerable number of organic compounds are used in the pharmaceutical industry. Prior to the birth of modern medicine, organic medicine was the sole treatment option for many disorders. Organic chemicals are widely used in the manufacture of both the medication and the coating.
When medicine is coated, the bitterness is minimised and the drug is retained for a longer amount of time. Several of the developed medicines use organic compounds as the prototype in order to create innovative and effective medication.
Conclusion
Organic reactions are utilised in the production of new organic compounds in organic synthesis. Many man-made chemicals, such as pharmaceuticals, plastics, food additives, and fabrics, rely on organic processes for their synthesis.
Combustion of organic fuels and saponification of lipids to generate soap are two of the oldest organic reactions. In 1828, the Wöhler synthesis marked the beginning of modern organic chemistry. The Nobel Prize in Chemistry has been awarded for the creation of certain organic processes in the past, including the Grignard reaction in 1912, the Diels-Alder reaction in 1950, the Wittig reaction in 1979, and the olefin metathesis in 2005.
