Abstract
N (ω-Haloalkyl)amidothiophosphates, N (ω-Haloalkyl)amidothiophosphonates, and N- (ω-Haloalkyl)amidothiophosphinates (Hal = Cl or Br) were obtained in high yields by alkylation of phosphorus(V) acid thioamides with 6h,ω-dihaloalkanes under phase-transfer catalysis (PTC) conditions or through the use of NaH as a base. Thermal rearrangement of N (3-iodopropyl)-or N (4-iodobutyl)amidothiophosphate and N (3-iodopropyl)-or N (4-iodo-butyl)amidothiophosphonate obtained in situ by the Finkelstein reaction provides a convenient route to 2-oxo-1,3,2-thiazaphosphinanes and 2-oxo-1,3,2-thiazaphosphepanes. Reactions of N (ω-Haloalkyl)amidothiophosphinates with NaClO4 in MeCN afforded the first example of stable 1,3,2-thiazaphosphacyclanium salts containing P—C bonds.
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