Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2006-02-07
2006-02-07
Witherspoon, Sikarl A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
C568S363000, C568S364000, C568S377000, C568S403000, C568S407000, C568S408000, C568S446000, C568S447000, C568S471000, C568S476000
Reexamination Certificate
active
06995291
ABSTRACT:
The present invention relates to the field of organic synthesis and more precisely to a process for the synthesis of an unsaturated aldehyde or ketone by oxidation of the corresponding alcohol. The oxidation is performed by a hypochlorite salt and a catalytic amount of a N-(2,2,6,6-tetraalkyl-4-piperidinyl-N-oxyl)-2-amino-1,3,5-triazine compound, preferably a N-oxyl derivative of one of the polymers known under the trademark Chimassorb® 944 or 2020.
REFERENCES:
patent: 1 103 537 (2001-05-01), None
Aneli et al., XP-002238208, “Fast and Selective Oxidation of Primary alcohols to Aldehydesor or to Carboxylic Acids and of Secondary Alcohols to Ketones Mediated by Oxoammonium Salts under Two-Phase Conditions”, Journal of Org. Chem, vol. 52, No. 12, pp2659-2663 , (1987).
Dijksman et al., XP-002238182, “Polymer immobilised TEMPO (PIPO): an efficient catalyst for the cholorinated hydrocarbon solvent-free and bromide-free oxidation of alcohols with hypochlorite”. Chem. Commun. pp 271-271 (2000).
Nooy et al., XP-002072173, On the Use of Stable Organic Nitroxyl Radicals for the Oxidatioen of Primary and Secondary Alcohols, Synthesis, George Thieme Verlag, Stuttgart, DE, PP 1153-1174 (1996).
deNooy et al., XP002072173, “On the Use of Stable Organic Nitroxy Radicals for the Oxidation of Primary and Secondary Alcohols,” Sunthesis Geord Thieme Verlag, Stuttgart, DE, pp 1153-1174 (1996).
C. Bolm et al., “TEMPO Oxidations with a Silica-Supported Catalyst,” Chem. Commun. , 1999, pp. 1795-1796.
Firmenich SA
Winston & Strawn LLP
Witherspoon Sikarl A.
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