Tolyyl

Tolyyl is a chemical term referring to a univalent radical derived from toluene by removal of a hydrogen atom from the methyl group or from the aromatic ring. When the hydrogen is removed from the methyl group, the resulting tolyyl radical is specifically called a tolyl group or tolyl radical. There are three possible isomers for this group, depending on which hydrogen atom is removed from the methyl group. When a hydrogen atom is removed from the aromatic ring, the resulting radical is also referred to as a tolyl radical, and there are six possible isomers depending on the position of the methyl group and the removed hydrogen atom.

More commonly, the term tolyyl is used to refer to the tolyl group, which is a substituent group derived from toluene. This group has the chemical formula C7H7. The tolyl group is an aromatic organic compound that is part of many other chemical compounds, acting as a building block. For instance, tolyl groups are found in various dyes, pharmaceuticals, and industrial chemicals. The specific properties of a compound containing a tolyl group will depend on the rest of the molecule it is attached to, as well as the specific isomer of the tolyl group present. Understanding the tolyl group is important in organic chemistry for predicting reactions and properties of more complex molecules.