Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Oxidative Cleavage of Alkenes: Ozonolysis01:46

Oxidative Cleavage of Alkenes: Ozonolysis

In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
Carboxylic Acids to Methylesters: Alkylation using Diazomethane01:33

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.
Hydroboration-Oxidation of Alkenes03:08

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.
Oxymercuration-Reduction of Alkenes02:36

Oxymercuration-Reduction of Alkenes

Oxymercuration–reduction of alkenes is one of the major reactions converting alkenes to alcohols. It involves the hydration of alkenes with mercuric acetate in a mixture of tetrahydrofuran and water, forming an organomercury adduct. This is followed by a demercuration step in which the adduct is reduced to an alcohol using sodium borohydride.
Autoxidation of Ethers to Peroxides and Hydroperoxides02:23

Autoxidation of Ethers to Peroxides and Hydroperoxides

Ethers represent a class of chemical compounds that become more dangerous with prolonged storage because they tend to form explosive peroxides when standing in the air. Autoxidation is the spontaneous oxidation of a compound in air. In the presence of oxygen, ethers slowly oxidize to form hydroperoxides and dialkyl peroxides.
Ethers from Alkenes: Alcohol Addition and Alkoxymercuration-Demercuration02:35

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...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Air pollution accountability research: Moving from a chain to a web.

Global epidemiology·2023
Same author

Impacts of Regulations on Air Quality and Emergency Department Visits in the Atlanta Metropolitan Area, 1999-2013.

Research report (Health Effects Institute)·2019
Same author

The Denver Aerosol Sources and Health (DASH) Study: Overview and Early Findings.

Atmospheric environment (Oxford, England : 1994)·2012
Same author

Iron solubility related to particle sulfur content in source emission and ambient fine particles.

Environmental science & technology·2012
Same author

Mathematical modeling of the formation of nitrogen-containing air pollutants. 1. Evaluation of an Eulerian photochemical model.

Environmental science & technology·2012
Same author

Uncertainties in incremental reactivities of volatile organic compounds.

Environmental science & technology·2011

関連する実験動画

Updated: Jul 12, 2026

Original Experimental Approach for Assessing Transport Fuel Stability
09:48

Original Experimental Approach for Assessing Transport Fuel Stability

Published on: October 21, 2016

オゾンコントロールとメタノール燃料の使用

A G Russell, D St Pierre, J B Milford

    Science (New York, N.Y.)
    |January 12, 1990
    PubMed
    まとめ
    この要約は機械生成です。

    自動車や燃焼にメタノール燃料を使用することで,オゾン汚染を大幅に減らすことができます. ロサンゼルスの研究では,メタノール燃料の使用により,オゾン濃度と曝露が低下し,ホルムアルデヒドの増加は最小限に留まっていることが判明しました.

    さらに関連する動画

    Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source
    06:39

    Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source

    Published on: October 20, 2023

    Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
    07:24

    Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer

    Published on: February 19, 2018

    関連する実験動画

    Last Updated: Jul 12, 2026

    Original Experimental Approach for Assessing Transport Fuel Stability
    09:48

    Original Experimental Approach for Assessing Transport Fuel Stability

    Published on: October 21, 2016

    Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source
    06:39

    Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source

    Published on: October 20, 2023

    Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
    07:24

    Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer

    Published on: February 19, 2018

    科学分野:

    • 環境科学 環境科学
    • 大気化学 大気化学
    • 燃焼工学 燃焼工学とは

    背景:

    • 自動車の排出量と静止中の燃焼は,都市空気の汚染に大きく貢献しています.
    • オゾン (O3) は,光化学反応によって形成される有害な大気汚染物質です.
    • メタノールはガソリンとは異なる化学性質を持つ潜在的な代替燃料です.

    研究 の 目的:

    • ロサンゼルスでメタノール燃料の使用が空気の質に与える影響をモデル化するために.
    • メタノールがオゾンとホルムアルデヒド濃度に及ぼす影響を評価する.
    • 純メタノール (M100) とメタノールとガソリンの混合物 (M85) の空気品質の利点を比較する.

    主な方法:

    • 空気の質を予測するためにコンピュータモデリングシミュレーションが採用されました.
    • この研究は,カリフォルニア州ロサンゼルスに焦点を当てて,2000年と2010年の条件をシミュレートした.
    • M100およびM85燃料の使用がオゾンおよびホルムアルデヒド形成に与える影響を評価した.

    主要な成果:

    • シミュレートされたM100燃料の使用は,ピークオゾンレベルを最大16%低下させた.
    • 連邦基準を超えるオゾンレベルへの曝露は,M100.で最大22%減少しました.
    • フォーマルアルデヒドの濃度や暴露は,メタノール使用では大きく増加せず,時には減少した.

    結論:

    • メタノール燃料,特にM100は,オゾン形成を減らすことによって都市空気の質を改善する大きな可能性を示しています.
    • メタノール蒸気の低化学反応性は,オゾン層を減少させる効果の鍵となる.
    • メタノール燃料の使用は,空気の汚染を軽減するための実行可能な戦略であり,ホルムアルデヒドレベルに管理可能な影響を及ぼします.