The invention relates to a process for the preparation of (metal) salts of alkylphosphonous acids, which comprises reacting elemental yellow phosphorus with halogen-free alkylating agents in the presence of at least one base. The invention also relates to the use of the (metal) salts of alkylphosphonous acids prepared by this process.
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Page column 3-4
(2008/06/13)
Formation of methylphosphonous acid by alkylation of yellow phosphorus
Methylphosphonous acid is a key intermediate in the synthesis of phosphinic acid salts, a new class of halogen-free flame retardants. This paper describes a novel and simple synthesis of this synthon: By alkylation of elemental yellow phosphorus with meth
Weferling, Norbert,Sicken, Martin,Hoerold, Sebastian
p. 1757 - 1761
(2007/10/03)
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