Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...
Reexamination Certificate
2006-10-17
2006-10-17
Seaman, Margaret D. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Unsubstituted hydrocarbyl chain between the ring and the -c-...
Reexamination Certificate
active
07122663
ABSTRACT:
The instant invention relates to stable free nitroxyl radicals of formula (I)whereinat least one of the substituents R is —O. and the others are hydrogen or OH;X is —NR1R2, wherein R1and R2are independently hydrogen, C1–C18alkyl or together with the nitrogen atom to which they are bound form a 5 or 6 membered ring which may be further interrupted by an O atom. Further subjects of the invention are an oxidation process for alcohols to aldehydes or ketones or to carboxylic acids in the presence of a compound of formula (I) and the use of stable free nitroxyl radicals of formula (I) as oxidation catalysts.
REFERENCES:
patent: 4442250 (1984-04-01), Cantatore
patent: 5322912 (1994-06-01), Georges et al.
patent: 6441243 (2002-08-01), Sommerlade et al.
patent: 1077227 (2001-02-01), None
patent: 01/92228 (2001-12-01), None
L. Dulog et al., Makromol. Chem. vol. 189, pp. 2611-2615 (1988).
T. Connolly et al., Tetrahedron Letters, vol. 37, No. 28, pp. 4919-4922, (1996).
A. de Nooy et al., Synthesis, “On the Use of Stable Organic Nitroxyl Radicals for the Oxidation of Primary and Secondary Alcohols”, Oct. 1, 1996, pp. 1153-1174.
Ciba® CHIMASSORB® 966, “Sterically Hindered Amine Light Stabilizer”, Technical Data Sheet, First Ed. Date: Dec. 1989.
M. F. Semmelhack et al., J. Am. Chem. Soc. vol. 106, (1984), pp. 3374-3376.
Sala Massimiliano
Schneider Armin
Zedda Alessandro
Ciba Specialty Chemicals Corp.
Rahmani Niloofar
Seaman Margaret D.
Stevenson Tyler A.
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