Transformation (function)

Late-stage functionalization

Late-stage functionalization (LSF) is a desired, chemical or biochemical, chemoselective transformation on a complex molecule to provide at least one analog in sufficient quantity and purity for a given purpose without needing the addition of a functional group that exclusively serves to enable said transformation. Molecular complexity is an intrinsic property of each molecule and frequently determines the synthetic effort to make it. LSF can significantly diminish this synthetic effort, and thus enables access to molecules, which would otherwise not be available or too difficult to access. The requirements for LSF can be met by both C–H functionalization reactions and functional group manipulations. LSF reactions are particularly relevant and often used in the fields of drug discovery and materials chemistry, although no LSF has been implemented in a commercial process. (Wikipedia).

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