Adding this group to the 3-position of morphine gives codeine, and an exhaustive addition of this functional group is the first step of the (*) Hofmann elimination.
A method of attaching this functional group to sugars using silver oxide is named for Purdie, and another procedure for adding it uses DMS and is named for Haworth. The addition of a single one of this group to a small molecule may radically alter its half-life, selectivity, and binding affinity, a phenomenon called its namesake "magic" effect. In the mass spectrometry of glycans, this group is often added to protect hydroxyls. A radical method of adding this functional group involves mixing Fenton's reagent and DMSO. Adding this group to the 3-position of morphine gives codeine, and an exhaustive addition of this functional group is the first step of the (*) Hofmann elimination. Biologically, the addition of this functional group is done via an SN2 reaction with a homocysteine derivative as a functional group; in that reaction, S-Adenosylmethionine serves as a donor. Xylene contains two of these groups attached to a benzene ring, and one of them bonded to benzene gives toluene. For 10 points, name this chemical group which formula CH3.
A method of attaching this functional group to sugars using silver oxide is named for Purdie, and another procedure for adding it uses DMS and is named for Haworth.
methyl [prompt on alkyl]