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Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis

Ethers from Alcohols: Alcohol Dehydration and Williamson Ether Synthesis

Overview
Ethers can be prepared from organic compounds by various methods. Some of them are discussed below,
Preparation of Ethers by Alcohol Dehydration
In this method, in the presence of protic acids, alcohol dehydrates to produce alkenes and ethers under different conditions. For example, in the presence of sulphuric acid, dehydration of ethanol at 413 K yields ethoxyethane, whereas it yields ethene at 443 K.

Ethers from Alkenes: Alcohol Addition and Alkoxymercuration-Demercuration

Ethers from Alkenes: Alcohol Addition and Alkoxymercuration-Demercuration

Overview
Ethers can also be prepared from alkenes through acid-catalyzed addition of alcohols and alkoxymercuration–demercuration.
Preparation of Ethers by Acid-Catalyzed Addition of Alcohol to Alkenes
The acid-catalyzed addition of alcohol to an alkene involves treating the alkene with an excess of alcohol in the presence of an acid catalyst to form an ether under suitable conditions. The hydrogen will add to the less substituted carbon so that the nucleophile can attack the more substituted...

Preparation of Alcohols via Addition Reactions

Preparation of Alcohols via Addition Reactions

Overview
The acid-catalyzed addition of water to the double bond of alkenes is a large-scale industrial method used to synthesize low-molecular-weight alcohols. An acidic atmosphere is required to allow the hydrogen in the water molecule to act as an electrophile and attack the double bond in an alkene. The addition of a proton to the double bond creates a carbocation intermediate. The proton preferentially bonds to the less substituted end of the double bond to create a more stable carbocation...

Hydroboration-Oxidation of Alkenes

Hydroboration-Oxidation of Alkenes

In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.

Production of Organic Acids

Production of Organic Acids

Lactic acid, an important organic acid extensively applied in food, pharmaceutical, and biodegradable polymer industries, is primarily produced via microbial fermentation. This method is favored over chemical synthesis due to its environmental sustainability and capacity for enantiomerically pure product formation. Among various microbial processes, the fermentation of starch-based substrates stands out due to the abundance and renewability of raw materials like corn and potatoes.Hydrolysis of...

Carboxylic Acids to Methylesters: Alkylation using Diazomethane

Carboxylic Acids to Methylesters: Alkylation using Diazomethane

Carboxylic acids react with diazomethane in an ether solvent via alkylation at the carboxylate oxygen atom to give methyl esters of the corresponding acid with excellent yields.

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Related Experiment Video

Updated: Mar 30, 2026

Methanol Independent Expression by Pichia Pastoris Employing De-repression Technologies

Methanol Independent Expression by Pichia Pastoris Employing De-repression Technologies

Published on: January 23, 2019

Efficient green methanol synthesis from glycerol.

Muhammad H Haider¹, Nicholas F Dummer¹, David W Knight¹

¹Cardiff Catalysis Institute, School of Chemistry. Cardiff University, Cardiff CF10 3AT, UK.

Nature Chemistry

|November 21, 2015

Summary

This summary is machine-generated.

Crude glycerol, a biodiesel byproduct, can be converted into methanol and other valuable chemicals using simple catalysts. This one-step process offers a sustainable method for recycling glycerol, enhancing biodiesel production viability.

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Published on: October 24, 2016

Area of Science:

Chemical Engineering
Sustainable Chemistry
Catalysis

Background:

Biodiesel production generates significant quantities of crude glycerol as a byproduct.
Effective utilization of crude glycerol is crucial for the economic viability of biodiesel manufacturing.
Current glycerol valorization methods can be complex or inefficient.

Purpose of the Study:

To develop a simple, efficient, and sustainable method for converting crude glycerol into valuable chemicals.
To investigate the potential for recycling glycerol generated during biodiesel production.
To demonstrate the generality of the proposed chemical conversion.

Main Methods:

Reaction of crude glycerol with water over basic or redox oxide catalysts.
One-step, low-pressure process.
Utilizing simple and accessible catalytic materials.

Main Results:

High yields of methanol were achieved from crude glycerol conversion.
Other valuable chemical coproducts were also generated.
The process demonstrated effectiveness with various molecules containing at least two hydroxyl groups.

Conclusions:

A novel, low-pressure catalytic process enables the efficient conversion of crude glycerol to methanol.
This method provides a viable route for recycling biodiesel-derived glycerol.
The chemistry is general, applicable to other polyol compounds, broadening its potential impact.