Crown ether compound and separating agent

Details Crown ether compound and separating agent Crown ether compound and separating agent

1989-08-25

1990-07-17

Hollrah, Glennon H.

Catalyst, solid sorbent, or support therefor: product or process

Solid sorbent

Organic

549349, B01J 2026, C07D32300

Patent

active

049421492

ABSTRACT:
A crown ether compound is shown below and useful as a separating agent for chemical compounds. ##STR1## (In the formula, A and B represent hydrogen atoms, straight chain or branched alkyl groups having 1-6 carbon atoms, allyl groups having 6-10 carbon atoms, or aralkyl groups having 7-9 carbon atoms. Although A and B may be different groups, it is preferable that they be the same.
R.sub.1 represents a hydrogen atom, a straight chain or branched alkyl group having 1-20 carbon atoms, or preferably an alkyl group having 6-16 carbon atoms. R.sub.1 may be bonded to any carbon atom on the cyclical ester group and its number is 1-12, and preferably 1-3. n represents an integer from 3-10, and preferably 4-8, with 5 or 6 being even more preferable.
In addition R.sub.2 and R.sub.3 represent straight chain or branched alkyl groups having 1-30, and preferably 6-20 carbon atoms, or aryl groups having 6-18 carbon atoms, or aralkyl groups having 7-30 carbon atoms. The location of R.sub.2 and R.sub.3 may be anywhere other than the A and B substitution positions on the condensed ring, and although one of each of R.sub.2 and R.sub.3 is satisfactory, a maximum of 5 groups may be substituted. In addition, R.sub.2 and R.sub.3 may also be different.)

REFERENCES:
Cram et al., "Host-Guest Complexation. 9.", CA 89: 59328d (1978).
Cram, "Binaphthyl-Substituted Macrocyclic Polyethers", CA 82: 73050u (1975).
Timko et al., "Host-Guest Complexation. 10.", CA 90: 23631d (1979).

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