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Asymmetric hydrogenation - Wikipedia
Asymmetric hydrogenation is a chemical reaction that adds two atoms of hydrogen to a target (substrate) molecule with three-dimensional spatial selectivity. Critically, this selectivity does not come from the target molecule itself, but from other reagents or catalysts present in the reaction. This allows spatial information (what chemists refer to as chirality) to transfer from one molecule to the target, forming the product as a single enantiomer. The chiral information is most commonly …
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Hydrogenation - Simple English Wikipedia, the free encyclopedia
WEBHydrogenation is the process of adding hydrogen to organic compounds. It is done to alkenes. Vegetable oils have alkenes in them. Alkenes are liquid and spoil easily. …
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Hydrogen - Wikipedia
WEBHydrogen is a chemical element; it has symbol H and atomic number 1. It is the lightest element and, at standard conditions, is a gas of diatomic …
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Hydrogenation | Catalytic, Hydrophobic & Lipids | Britannica
WEBHydrogenation, chemical reaction between molecular hydrogen and an element or compound, ordinarily in the presence of a catalyst. The reaction may be one in which …
What Is Hydrogenation? Chemistry Definition
WEBDec 3, 2019 — Hydrogenation is a chemical reaction that adds hydrogen to a molecule. Hydrogenation is not thermodynamically favorable at ordinary temperatures, so a catalyst is needed. Usually this catalyst is a …
Hydrogenation: Definition, Examples, and Applications …
WEBHydrogenation is an essential chemical reaction for the synthesis of new chemicals. The reaction occurs between a hydrogen molecule and an unsaturated compound, like alkene and alkyne, in the presence of a …
Hydrogenation - Encyclopedia.com
WEBMay 18, 2018 — hydrogenation (hīdrôj´ənā´shən, hī´drəjənā´shən), chemical reaction of a substance with molecular hydrogen, usually in the presence of a catalyst. A common …
Hydrogenation - an overview | ScienceDirect Topics
WEBHydrogenation is a fundamental process in organic chemistry and has been used for centuries to add elemental hydrogen across unsaturated bonds.
Difference Between Hydrogenation and Hydrogenolysis
WEBFeb 11, 2018 — The main difference between hydrogenation and hydrogenolysis is that hydrogenation includes the formation of a saturated compound from an unsaturated compound whereas hydrogenolysis …
Hydrogenation | Introduction to Chemistry - Course Hero
WEBHydrogenation refers to the treatment of substances with molecular hydrogen (H 2), adding pairs of hydrogen atoms to compounds (generally unsaturated compounds). …
16.6: Hydrogenolysis - Chemistry LibreTexts
WEBHydrogenolysis is a chemical reaction whereby a carbon–carbon or carbon– heteroatom single bond is cleaved or undergoes "lysis" by hydrogen. [ 1] The heteroatom may vary, …
Dehydrogenation - Wikipedia
WEBIn chemistry, dehydrogenation is a chemical reaction that involves the removal of hydrogen, usually from an organic molecule. It is the reverse of hydrogenation. Dehydrogenation is …
Ionic hydrogenation - Wikipedia
WEBIonic hydrogenation refers to hydrogenation achieved by the addition of a hydride to substrate that has been activated by an electrophile. Some ionic hydrogenations entail …
Catalytic Hydrogenation of Alkenes II - Chemistry LibreTexts
WEBJan 23, 2023 — The alkene reacts with hydrogen gas in the presence of a metal catalyst which allows the reaction to occur quickly. The energy released in this process, called …
Hydrogen - Simple English Wikipedia, the free encyclopedia
WEBHydrogen is a chemical element at the start of the periodic table. It has the symbol H and atomic number 1. It also has a standard atomic weight of 1.008. This makes it the …
Category:Hydrogenation - Wikipedia
WEBPages in category "Hydrogenation" The following 11 pages are in this category, out of 11 total. This list may not reflect recent changes. ...
Hydrogenation Definition & Meaning - Merriam-Webster
WEB: to combine or treat with or expose to hydrogen. especially : to add hydrogen to the molecule of (an unsaturated organic compound) hydrogenation. hī-ˌdrä-jə-ˈnā-shən. ˌhī …
Hydrogen | Properties, Uses, & Facts | Britannica
WEBAug 20, 2024 — Hydrogen, a colorless, odorless, tasteless, flammable gaseous substance that is the simplest member of the family of chemical elements. The earliest known …
水素化 - Wikipedia
WEB水素化(すいそか、英: hydrogenation )とは、水素ガスを還元剤として化合物に対して水素原子を付加する還元反応のことである。水素添加反応(すいそてんかはんのう)、 …
Dehydrogenation - Simple English Wikipedia, the free encyclopedia
WEBDehydrogenation is the chemical process where hydrogen is taken from an organic molecule. It is the reverse of hydrogenation .
Hydrogenation of carbon–nitrogen double bonds - Wikipedia
WEBIn chemistry, the hydrogenation of carbon–nitrogen double bonds is the addition of the elements of dihydrogen (H 2) across a carbon–nitrogen double bond, forming amines or …
Hydrogen production - Wikipedia
WEBIn 2020, roughly 87 million tons of hydrogen was produced [12] worldwide for various uses, such as oil refining, in the production of ammonia through the Haber process, and in the …