Chemistry of inorganic compounds – Phosphorus or compound thereof – Halogen containing
Patent
1985-07-19
1987-04-07
Doll, John
Chemistry of inorganic compounds
Phosphorus or compound thereof
Halogen containing
C01B 2510
Patent
active
046560173
ABSTRACT:
Cyclic phosphonitrilic halides are formed rapidly and in high yield in a controllable multi-step process including the step of reacting a nitrogenous base (e.g. pyridine) with a phosphorus tetrahalide (e.g. phosphorus pentachloride) in a suitable inert liquid reaction medium (e.g. monochlorobenzene) to form a complex and in a subsequent step reacting this complex with an ammonium halide (e.g. ammonium chloride) at a temperature above about 90.degree. C. up to the reflux temperature of the reaction medium to form cyclic phosphonitrilic halides, mainly trimer.
REFERENCES:
patent: 4567028 (1986-01-01), Tanino et al.
Allcock, Phosphorus-Nitrogen Compounds, Academic Press (1972), pp. 316-321.
Sulkowski et al., Chem. Stos. 26 (2), 245-252 (1982).
Holmes et al., Inorg. Chem. 2, No. 3, Jun. 1963.
Holmes et al., J. Am. Chem. Soc. 80, 2980, Jun. 1958.
Adams, Jr. J. Robert
Allcock Harry R.
Stinnett S. James
Tedder, Jr. Joseph B.
Doll John
Ethyl Corporation
Johnson Donald L.
Laugel Wayne A.
Odenweller J. D.
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