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Oxidation of Alcohols

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:

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.

Protection of Alcohols

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 Substitution Reactions

Preparation of Alcohols via Substitution Reactions

Overview
Alcohols can be synthesized from alkyl halides via nucleophilic substitution reactions. The highly polar carbon-halogen bond in the substrate makes halide a good leaving group. The hydroxide ion or water can act as a nucleophile to take the place of halide and form an alcohol. The substitution reactions occur via two different reaction pathways, SN1 or SN2, depending on the nature of carbon attached to the halide.
Primary alcohols are synthesized from primary alkyl halides, and the...

Esters to Alcohols: Hydride Reductions

Esters to Alcohols: Hydride Reductions

Esters are reduced to primary alcohols when treated with a strong reducing agent like lithium aluminum hydride. The reaction requires two equivalents of the reducing agent and proceeds via an aldehyde intermediate.
Lithium aluminum hydride is a source of hydride ions and functions as a nucleophile. The mechanism proceeds in three steps. Firstly, the nucleophilic hydride ion attacks the carbonyl carbon of the ester to form a tetrahedral intermediate. Subsequently, the carbonyl group re-forms,...

Esters to Alcohols: Grignard Reaction

Esters to Alcohols: Grignard Reaction

The reaction of an ester with a Grignard reagent, followed by hydrolysis of the magnesium alkoxide salt in aqueous acid, yields a tertiary alcohol. In the case of formate esters, secondary alcohols are formed.
The reaction requires two equivalents of the Grignard reagent and introduces two identical alkyl groups, derived from the Grignard reagent, bonded to the hydroxyl-bearing carbon of the alcohol.
The reaction follows the typical nucleophilic acyl substitution mechanism. The Grignard...

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Modeling Alcohol Consumption in Rodents Using Two-Bottle Choice Home Cage Drinking and Microstructural Analysis

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[Dermatologic pathology in chronic alcoholics].

V V Evstaf'ev, M M Levin

Vestnik Dermatologii I Venerologii

|January 1, 1989

Summary

This summary is machine-generated.

Chronic alcoholics exhibit a significantly higher prevalence of skin diseases, including psoriasis, compared to non-alcohol abusers. Dermatologists should be involved in the care of alcoholic patients.

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Area of Science:

Dermatology
Addiction Medicine

Background:

Alcoholism is a widespread issue with known systemic health impacts.
The specific dermatological manifestations and prevalence in chronic alcoholics require further investigation.

Purpose of the Study:

To determine the prevalence of dermatologic diseases in chronic alcoholics.
To compare the incidence of skin conditions in alcoholics versus a control group.

Main Methods:

Screening of 1159 chronic alcoholics from narcology departments for skin diseases.
Comparison with a reference group of 2735 individuals without alcohol abuse, matched for age and working conditions.

Main Results:

Skin diseases were detected in 43% of alcoholic patients, nearly five times higher than in the reference group.
Psoriasis was found to be ten times more frequent in the alcoholic patient group compared to controls.

Conclusions:

Chronic alcohol abuse is strongly associated with an increased risk of developing various skin diseases.
Dermatologists play a crucial role in the comprehensive management and treatment of individuals with alcoholism.