Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...
Reexamination Certificate
2006-04-04
2006-04-04
Wilson, James O. (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Unsubstituted hydrocarbyl chain between the ring and the -c-...
C544S178000, C544S404000, C548S335100, C548S373100
Reexamination Certificate
active
07022845
ABSTRACT:
A process for the monomethylation of nitrogenous heterocycles having at least one nitrogen atom bonded to a hydrogen atom by reacting the nitrogenous heterocycle with dimethyl carbonate at a temperature of between 100° and 200° C. and a pressure of between 0.93×105Pa and 1.07×105Pa while methanol produced during the reaction is distilled off as it is formed.
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patent: 09169737 (1997-06-01), None
patent: 9608537 (1996-03-01), None
Smith and Linnhoff, “The Design of Separators in the Context of Overall Processes” Chemical Engineering Research and Design, vol. 66, pp. 195-228 (May 1988).
Lissel, “N-Methylierung . . . Derivaten”, Liebigs Annalen Der Chemie, Verlag Chemie GmbH, Weinheim, 1987, pp. 77-79.
Borredon Elisabeth
Chabaud Berhard
Gaset Antoine
Ouk Samedy
Thiebaud-Roux Sophie
Group SNPE
Tucker Zachary C.
Wilson James O.
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