Process for preparation of (poly)cyclic polyethers

Details Process for preparation of (poly)cyclic polyethers Process for preparation of (poly)cyclic polyethers

1974-01-28

1978-09-12

Milestone, Norma S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2603407, 2603409R, C07D49310

Patent

active

041137396

ABSTRACT:
In the preparation of (poly)cyclic polyethers by a cyclic Williamson synthesis, the improvement of contacting the reactants in a hindered (C.sub.4 -C.sub.14) alkanol. For example, bis-chloroethyl ether and the disodium salt of tetraethylene glycol are contacted in t-butanol to produce the cyclic polyether ##STR1## in high yields.

REFERENCES:
patent: 3562295 (1971-02-01), Pedersen
patent: 3687978 (1972-08-01), Pedersen
patent: 3763188 (1973-10-01), Krespan
Fieser et al., Reagents for Organic Synthesis, pp. 911-917 (1967).

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