Allylic Vs Vinylic Hydrogen

A hydrogen atom bonded to an sp 2 carbon of an alkene.

Allylic vs vinylic hydrogen.

Identify the number of allylic and vinylic hydrogens in the pictured molecules. The key difference between allylic and vinylic carbon is that allylic carbon is the carbon. It consists of a methylene bridge ch 2 attached to a vinyl group ch ch 2. Both groups own a double bond between two carbon atoms where all the other atoms are bonded through single bonds.

The key difference between these two structural components is the number of carbon and hydrogen atoms. None of the other hydrogens are vinylic. An allyl group is a substituent with the structural formula h 2 c ch ch 2 r where r is the rest of the molecule. The general formula for allyl is r ch 2 ch ch 2 in which the asterisk carbon atom is an allylic carbon atom.

This organic chemistry video tutorial explains how to determine which carbocation is most stable. The vinylic hydrogens are shown in red. Allyl groups have three carbon atoms and five hydrogen atoms. Key difference allyl vs vinyl both allyl and vinyl groups have slightly similar structures with a small variation.

The name is derived from the latin word for garlic allium sativum in 1844 theodor wertheim isolated an allyl derivative from garlic oil and named it schwefelallyl. Benzylic position allylic position propargylic position aryl aryl hydrogen. The allylic carbon atom is more reactive than normal. The allylic position is also like a vinylic position.

It provides plenty of examples including allylic and vinyli. Key difference allylic vs vinylic carbons functional groups are very important in understanding the different physical and chemical properties of organic molecules the terms allylic and vinyl carbons indicate whether the carbon atom is bonded directly or indirectly to a double bond in a molecule. Allyl form a stable carbocation because of the electron delocalization whereas vinylic carbocations are unstable as they lack p character. An allylic hydrogen is a hydrogen atom that is bonded to an allylic carbon in an organic molecule.