Preparation of tetrakis(dihydrocarbylamino)phosphonium halide

Details Preparation of tetrakis(dihydrocarbylamino)phosphonium halide Preparation of tetrakis(dihydrocarbylamino)phosphonium halide

1997-02-14

1999-03-16

Kumar, Shailendra

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

556 13, C07F 902, C07F 922

Patent

active

058832963

ABSTRACT:
A mixture is made from (i) a tris(dihydrocarbylamino) phosphoroamidite and/or a hydrohalide thereof, (ii) a strong base (e.g., NaOH) in proportions of about 2.0 to about 4.0 moles of (ii) per mole of (i), and (iii) at least one solvent for the base (e.g., H.sub.2 O). To this mixture is added a hydrocarbyl monohalide (e.g., EtBr) in proportions of about 1.0 to about 3.0 moles per mole of phosphoroamidite used in forming the initial mixture, and the resultant reaction produces tetrakis(dihydrocarbylamino)phosphonium halide. The process enables more efficient production of tetrakis(dihydrocarbylamino)phosphonium halides, and is capable of being effectively used in large scale production facilities while satisfying the economic constraints of commercial operations.

REFERENCES:
Koidan, Marchenko, Kudryavtsev, and Pinchuk, Zh. Obshch. Khim., 1982, 52, 2001.

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