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20.6.1.5 Method 5: Lactones by Cycloalkylating Reactions

DOI: 10.1055/sos-SD-020-01369

Maier, M. E.Science of Synthesis, (2007201470.

A carboxylic function with a leaving group in the ω-position can form a lactone via an intramolecular substitution process (Scheme 68). The leaving group might be a halide, an epoxide, a hydroxy group, or a double bond; in the extreme it might be a carbocation. Well-known reactions in this regard include the halolactonization of ω-unsaturated carboxylic acid derivatives, the cyclization of ω-bromo carboxylic acids, and the Mitsunobu lactonization.

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