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Related Concept Videos

Aldehydes and Ketones with Alcohols: Hemiacetal Formation01:19

Aldehydes and Ketones with Alcohols: Hemiacetal Formation

Similar to water, alcohols can add to the carbonyl carbon of the aldehydes and ketones. The addition of one molecule of alcohol to the carbonyl compound forms the hemiacetal or half acetal. As depicted below, in a hemiacetal, the carbon is directly linked to an OH and OR group.
Protection of Alcohols02:31

Protection of Alcohols

This lesson delves into the concept of protection and deprotection of a functional group fundamental to synthetic organic chemistry. These phenomena are explained in the context of aliphatic and aromatic alcohols.
Protection
It defines a protecting group as the masking agent to make the more reactive species inert to a given set of conditions. This concept is depicted via the illustration of liquid flow through different outlets in an assembly of pipes. The analogy helps to understand the role...
Preparation of Alcohols via Addition Reactions02:15

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...
Oxidation of Alcohols02:37

Oxidation of Alcohols

In this lesson, the oxidation of alcohols is discussed in depth. The various reagents used for oxidation of primary and secondary alcohols are detailed, and their mechanism of action is provided.
The process of oxidation in a chemical reaction is observed in any of the three forms:
Acidity and Basicity of Alcohols and Phenols02:36

Acidity and Basicity of Alcohols and Phenols

Like water, alcohols are weak acids and bases. This is attributed to the polarization of the O–H bond making the hydrogen partially positive. Moreover, the electron pairs on the oxygen atom of alcohol make it both basic and nucleophilic. Protonation of an alcohol converts hydroxide, a poor leaving group, into water—a good one. The two acid–base equilibria corresponding to ethanol are depicted below.
Physical Properties of Alcohols and Phenols02:32

Physical Properties of Alcohols and Phenols

Alcohols are organic compounds in which a hydroxy group is attached to a saturated carbon. Phenols are a class of alcohols containing a hydroxy group attached to an aromatic ring. The physical properties of the alcohols and phenols are influenced by hydrogen bonding due to the oxygen–hydrogen dipole in the hydroxy functional group and dispersion forces between alkyl or aryl regions of alcohol and phenol molecules.
Alcohols possess a higher boiling point than aliphatic hydrocarbons of similar...

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Related Experiment Video

Updated: Jul 6, 2026

Histological Analyses of Acute Alcoholic Liver Injury in Zebrafish
10:45

Histological Analyses of Acute Alcoholic Liver Injury in Zebrafish

Published on: May 25, 2017

Alcohol and the liver.

Adrian Reuben1

  • 1Liver Service, Division of Gastroenterology and Hepatology, and Liver Transplant Program, Medical University of South Carolina, Charleston, South Carolina, USA. reubena@musc.edu

Current Opinion in Gastroenterology
|April 15, 2008
PubMed
Summary

Advances in alcoholic liver disease research show progress in understanding pathogenesis, including oxidative stress and mitochondrial dysfunction. However, safe and effective therapies for alcoholic hepatitis and cirrhosis remain elusive.

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Area of Science:

  • Hepatology
  • Alcohol-related liver disease research
  • Molecular mechanisms of liver injury

Background:

  • Alcohol abuse contributes to significant global ill-health, with varying trends across nations.
  • Alcoholic liver disease (ALD) pathogenesis involves complex mechanisms.
  • Current treatment strategies for ALD have seen limited advancement.

Purpose of the Study:

  • To provide an update on recent advancements in ALD.
  • To cover epidemiology, genetics, detection, pathogenesis, and therapy.
  • To highlight key research findings and their implications.

Main Methods:

  • Review of current literature on alcoholic liver disease.
  • Analysis of epidemiological data and genetic factors.
  • Examination of pathogenetic pathways and therapeutic interventions.

Main Results:

  • Epidemiological trends in alcohol-related ill-health are mixed globally.
  • Oxidative and nitrosative stress, cytochrome P450 2E1, mitochondrial dysfunction, and adiponectin are key in ALD pathogenesis.
  • Liver transplantation remains a debated option for end-stage ALD.

Conclusions:

  • Research into ALD mechanisms is progressing.
  • Effective therapies for alcoholic hepatitis and cirrhosis are still under development.
  • Translating basic science findings into clinical practice for ALD is challenging.