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Allyl
 
 
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An allyl group is an alkene
Alkene

In organic chemistry, an alkene, olefin, or olefine is an Saturation chemical compound containing at least one carbon-to-carbon double bond....
 hydrocarbon
Hydrocarbon

In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. With relation to chemical terminology, aromatic hydrocarbons or arenes, alkanes, alkenes and alkyne-based compounds composed entirely of carbon or hydrogen are referred to as "pure" hydrocarbons, whereas other hydrocarbons with bonded com...
 group with the formula H2C=CH-CH2-. It is made up of a vinyl
Vinyl

A vinyl compound is any organic compound that contains a vinyl group , −CarbonHydrogenCovalent bondCH2. These are derivatives of ethene, CH2=CH2, with one hydrogen atom replaced with some other group....
 group, CH2=CH-, attached to a methylene
Methylene

Methylene is the chemical species, R2C:, named after methane, in which two of the carbon atom's valence electrons form no bonds. The word is applicable to:...
 -CH2. For example allyl alcohol
Allyl alcohol

Allyl alcohol or 2-propen-1-ol is an organic compound with the formula CH2=CHCH2OH. It is a water soluble, colourless liquid with an ethanol like odour at low concentrations and a mustard-like pungent odour at higher concentration....
 has the structure H2C=CH-CH2OH. Another example of a simple allyl compound is allyl chloride
Allyl chloride

Allyl chloride is the organic compound with the chemical formula CarbonHydrogen2=CHCH2Chlorine. This colorless liquid is soluble in water but soluble in common organic solvents....
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Encyclopedia


Allyl
An allyl group is an alkene
Alkene

In organic chemistry, an alkene, olefin, or olefine is an Saturation chemical compound containing at least one carbon-to-carbon double bond....
 hydrocarbon
Hydrocarbon

In organic chemistry, a hydrocarbon is an organic compound consisting entirely of hydrogen and carbon. With relation to chemical terminology, aromatic hydrocarbons or arenes, alkanes, alkenes and alkyne-based compounds composed entirely of carbon or hydrogen are referred to as "pure" hydrocarbons, whereas other hydrocarbons with bonded com...
 group with the formula H2C=CH-CH2-. It is made up of a vinyl
Vinyl

A vinyl compound is any organic compound that contains a vinyl group , −CarbonHydrogenCovalent bondCH2. These are derivatives of ethene, CH2=CH2, with one hydrogen atom replaced with some other group....
 group, CH2=CH-, attached to a methylene
Methylene

Methylene is the chemical species, R2C:, named after methane, in which two of the carbon atom's valence electrons form no bonds. The word is applicable to:...
 -CH2. For example allyl alcohol
Allyl alcohol

Allyl alcohol or 2-propen-1-ol is an organic compound with the formula CH2=CHCH2OH. It is a water soluble, colourless liquid with an ethanol like odour at low concentrations and a mustard-like pungent odour at higher concentration....
 has the structure H2C=CH-CH2OH. Another example of a simple allyl compound is allyl chloride
Allyl chloride

Allyl chloride is the organic compound with the chemical formula CarbonHydrogen2=CHCH2Chlorine. This colorless liquid is soluble in water but soluble in common organic solvents....
. Compounds containing the allyl group are often referred to as being allylic. Substituted versions of the parent allyl group, such as the trans-but-2-en-1-yl or crotyl group (CH3CH=CH-CH2-), may also be referred to as allylic groups.

The site of the saturated carbon atom, where the vinyl
Vinyl

A vinyl compound is any organic compound that contains a vinyl group , −CarbonHydrogenCovalent bondCH2. These are derivatives of ethene, CH2=CH2, with one hydrogen atom replaced with some other group....
 group attaches (e.g. next to the OH in allyl alcohol) is called the allylic position or allylic site. A group, such as -OH, attached at an allylic site is sometimes described as allylic.

Allylic carbons are spł hybridized; vinylic carbons are sp˛ hybridized.

Allylic methylene groups show special reactivity such as demonstrated in allylic oxidations, ene reaction
Ene reaction

The Ene reaction is a chemical reaction between an alkene with an allylic hydrogen and a multiple bond . It is a group transfer reaction. The product is a substituted alkene with the double bond shifted to the allylic position....
s and the Trost asymmetric allylic alkylation
Trost asymmetric allylic alkylation

The Trost asymmetric allylic alkylation or Trost AAA or allylic asymmetric substitution is an organic reaction used in asymmetric synthesis....
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The term homoallylic refers to the position on a carbon skeleton next to an allylic position.

See also


  • Propargylic/Homopropargylic
  • Benzylic
  • Vinylic
  • Acetylenic
    Acetylenic

    In organic chemistry, the term acetylenic designates* a doubly unsaturated position on a molecular framework, for instance in an alkyne such as acetylene;...
  • Naloxone
    Naloxone

    Naloxone is a medication used to counter the effects of opioid Drug overdose, for example heroin or morphine overdose. Naloxone is specifically used to counteract life-threatening depression of the central nervous system and respiratory system....
  • Dimethylallyl pyrophosphate
    Dimethylallyl pyrophosphate

    Dimethylallyl pyrophosphate is an intermediate product of both mevalonic acid pathway and DOXP/methylerythritol phosphate pathway. It is an isomer of isopentenyl pyrophosphate and exists in virtually all life forms....
  • Allylic rearrangement
    Allylic rearrangement

    An allylic rearrangement or allylic shift is an organic reaction in which the double bond in an allyl chemical compound shifts to the next carbon atom....
  • Allyl alcohol
    Allyl alcohol

    Allyl alcohol or 2-propen-1-ol is an organic compound with the formula CH2=CHCH2OH. It is a water soluble, colourless liquid with an ethanol like odour at low concentrations and a mustard-like pungent odour at higher concentration....
  • Diallyllysergamide
  • Propylene
    Propylene

    Propene, also known as propylene, is an saturation organic chemistry having the chemical formula Carbon3Hydrogen6. It has one covalent bond, and is the second simplest member of the alkene class of hydrocarbons, and it is also second in natural abundance....
  • Isoprene
    Isoprene

    Isoprene is a common synonym for the chemical compound 2-methyl-1,3-butadiene. It is commonly used in industry, is an important biological material, and can be a harmful environmental pollutant and toxicant when present in excess quantities....
  • Terpene
    Terpene

    Terpenes are a large and varied class of hydrocarbons, produced primarily by a wide variety of plants, particularly conifers, though also by some insects such as termites or swallowtail butterflies, which emit terpenes from their osmeterium....