CH2C6H5
CH2C6H5 is a chemical formula that represents a phenylmethyl group, more commonly known as a benzyl group. This group consists of a phenyl ring (C6H5) attached to a methylene group (CH2). The benzyl group is a substituent that can be found in many organic compounds. Its structure is characterized by the aromaticity of the phenyl ring, which imparts specific chemical properties. The methylene bridge provides a point of attachment for the benzyl group to other molecules. This simple yet versatile structure makes the benzyl group a common building block in organic synthesis. It is often employed as a protecting group for alcohols, amines, and carboxylic acids due to its stability under certain reaction conditions and its relatively easy removal. For example, benzyl ethers are stable to many reagents but can be cleaved by catalytic hydrogenation. The presence of the benzyl group can also influence the reactivity of adjacent functional groups due to electronic effects from the phenyl ring. Compounds containing the benzyl group are widespread in nature and in synthetic chemicals, including pharmaceuticals, fragrances, and polymers. The phenylmethyl radical, which is the benzyl radical, is also a significant intermediate in various chemical reactions.