The Michaelis–Becker reaction is the reaction of a hydrogen (thio)phosphonate with a base, followed by a nucleophilic substitution of phosphorus on a haloalkane, to give an alkyl (thio)phosphonate. Yields of this reaction are often lower than the corresponding Michaelis–Arbuzov reaction.
Further reading Savignac, Philippe; Iorga, Bogdan (2003). Modern phosphonate chemistry. CRC Press. ISBN 978-0-8493-1099-7.
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