Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...
Patent
1989-05-09
1991-04-30
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Unsubstituted hydrocarbyl chain between the ring and the -c-...
560 21, 562853, C07D49808, C07D27300
Patent
active
050119249
ABSTRACT:
The present invention resides in the discovery of a new class of compounds defined herein as "chromogenic cryptahemispherands" useful for the measurement of ions, in particular, ions in aqueous solution, which have the structure ##STR1## wherein: R, same or different, is hydrogen, lower alkyl, lower alkylidene, lower alkenyl, allyl or aryl;
REFERENCES:
patent: 3847949 (1974-11-01), Pedersen et al.
patent: 3966766 (1976-06-01), Lehn
patent: 4076724 (1978-02-01), Lehn
patent: 4080337 (1978-03-01), Cram
patent: 4845212 (1989-07-01), Czech
Cram, II, Angew. Chem. Int. Ed. Eng., vol. 25, pp. 1039 to 1057, (1986).
Chapoteau Eddy
Cram Donald J.
Czech Bronislaw P.
Gebauer Carl R.
Helgeson Roger C.
Greenman Jeffrey M.
Higel Floyd D.
Technicon Instruments Corporation
The Regents of the University of California
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