Method of producing N-substituted 2,6-dialkylmorpholines

Details Method of producing N-substituted 2,6-dialkylmorpholines Method of producing N-substituted 2,6-dialkylmorpholines

2006-09-12

2006-09-12

Richter, Johann (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

C544S178000

Reexamination Certificate

active

07105662

ABSTRACT:
The present invention relates to a process for the preparation of N-substituted 2,6-dialkylmorpholines of the formula Iin which R1and R2, independently of one another, are hydrogen, alkyl or cycloalkyl, or R1and R2together with the carbon atom to which they are bonded are a 5- to 14-membered carbocycle, and R3and R4, independently of one another, are alkyl or cycloalkyl, by reacting at least one carbonyl compound of the formula IIin which R1and R2have the meanings given above, with at least one morpholine of the formula IIIin which R3and R4have the meanings given above, in the presence of hydrogen and at least one metal-containing catalyst, wherein the active component of the catalyst consists essentially of platinum group metals.

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Koenig et al., Angewandte Chemie 77(1965) S. 327-33.
Derwent Abst, DW 99-71485 = DE 197 20 475.
Derwent Abst, 85-864 = GB 1,591,144.
XP-002292679, 4159-4164.
XP-002202680, 598-693.

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