16.3: Summary of Alkene Reactions - Chemistry LibreTexts
Alkenes are primarily prepared by elimination reactions of molecules that contain good leaving groups attached to sp 3 carbons. Examples of such reactions are dehydrohalogenations with strong base, and acid-catalyzed dehydrations of alcohols. The opposite of an elimination is an addition reaction.
27.5: Introduction to Addition Reactions: Reactions of Alkenes
2023年7月12日 · Addition of Hydrogen Halides to Alkenes. All alkenes undergo addition reactions with the hydrogen halides. A hydrogen atom joins to one of the carbon atoms originally in the double bond, and a halogen atom to the other. For example, with ethene and hydrogen chloride, you get chloroethane: With but-2-ene you get 2-chlorobutane:
Alkene Addition Reactions: “Regioselectivity” and ...
2013年1月22日 · There are three key classes of stereoselectivity in alkene addition reactions: syn addition, anti addition, and syn + anti addition (“unselective”). With the pattern of bonds formed/broken, regioselectivity, and stereoselectivity in hand you should be able to draw the pattern of any alkene addition reaction.
2019年3月14日 · The key detail in these reactions is solvent: water and alcohol solvents will form the halohydrin products (the ones containing the OH and Br). All other solvents (you might
10.2 Reactions of Alkenes: Addition of Hydrogen Halide to ...
The most common type of reaction for alkene is the addition reaction to a C=C double bond. In addition reaction, a small molecule is added to multiple bonds, and one π bond is converted to two σ bonds (unsaturation degree decreases) as a result of the addition.
7.8: Electrophilic Addition Reactions of Alkenes
One of the most important reactions for alkenes is called electrophilic addition. In this chapter several variations of the electrophilic addition reaction will be discussed. Each case will have aspects common among all electrophilic addition.
Summary: Three Key Families Of Alkene Reaction Mechanisms
2013年4月25日 · Alkene reaction mechanisms fall into 3 main families - carbocation, 3-membered ring and concerted. Two minor families as well. All covered below.