Catalyst – solid sorbent – or support therefor: product or process – Solid sorbent – Organic
Patent
1997-11-25
1999-01-12
Lewis, Michael
Catalyst, solid sorbent, or support therefor: product or process
Solid sorbent
Organic
502400, 502407, 21050037, 21050038, 2105021, B01J 7010, B01J 7022, B01D 3916
Patent
active
058589104
ABSTRACT:
A set of chiral stationary phases is based on yohimbine and its derivatives. In particular, the hydroxyl functionality of yohimbine and its analogs is covalently bonded via a urethane linkage to a polymethylenesilyl chain attached to the bound hydroxyl groups of a refractory inorganic oxide by Si-O bonds. The resulting chiral stationary phases have multiple chiral recognition sites and can be used with a broad spectrum of materials as eluents without leaching.
REFERENCES:
patent: 3677410 (1972-07-01), Okumura et al.
patent: 4882048 (1989-11-01), Blaschke et al.
patent: 5240602 (1993-08-01), Hammen
Ghyka Alexander G.
Lewis Michael
Maas Maryann
McBride Thomas K.
Molinaro Frank S.
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