Phosphazenium salt and preparation process thereof, and process

Details Phosphazenium salt and preparation process thereof, and process Phosphazenium salt and preparation process thereof, and process

1997-02-05

1999-11-23

O'Sullivan, Peter

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

Organic compounds

Amino nitrogen containing

502164, 540542, 546 21, 546184, 548111, 548579, C07F 902, C07D21192, C07D22304, C07D20746

Patent

active

059903520

ABSTRACT:
A salt useful as an active species in an organic reaction and represented by the following chemical formula (1): ##STR1## wherein n stands for an integer of from 1 to 8, Z.sup.n- represents an n-valent anion of an active hydrogen compound, a, b, c and d each stands for a positive integer, and Rs represent the same or different hydrocarbon groups. In addition, a simple and efficient process is provided for producing a poly(alkylene oxide) by polymerizing an alkylene oxide compound in the presence of the salt represented by the chemical formula (1).

REFERENCES:
patent: 3829505 (1974-08-01), Herold
patent: 5401814 (1995-03-01), Schomaker et al.
patent: 5627291 (1997-05-01), Fischer
Schwesinger et al., Chem Abst. 108:37964, 1988.
Esswein et al, "Anionic Polymerization of Oxirane in the Presence of the Polyiminophosphazene base t-Bu-P.sub.4 ", Macronol, Rapid Commun, 17, pp. 143-148 (1996).
Esswein et al, "Polymerization of Ethylene Oxide with Alkyllithium Compounds and the Posphazene Base tBu-P.sub.4 ", Angew, Chem. Int. Ed. Engl., 35, No. 6, pp. 623-625 (1996).
Esswein et al, "Use of Polyiminophosphazenen Bases for Ring-opening Polymerzations", Macromol Symp., 107, pp. 331-340 (1996).

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