Preparation of aziridines

Details Preparation of aziridines Preparation of aziridines

1996-08-30

1997-12-02

McKane, Joseph

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548967, 548968, 548969, C07D20308

Patent

active

056938250

ABSTRACT:
A process for the preparation of an aziridine, especially ethyleneimine but also its derivatives in which one or both of its carbon atoms may be substituted once or twice by C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl or aryl, and the nitrogen atom is substituted by hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -cycloalkyl, aryl benzyl, C.sub.1 -C.sub.8 -hydroxyalkyl or C.sub.1 -C.sub.8 - aminoalkyl wherein ethanolamine or its derivatives bearing the same carbon and nitrogen substituents is reacted in the gas phase for dehydration at from 200.degree. to 600.degree. C. and from 0.001 to 5 bar, especially 0.1 to 1 bar, over a heterogeneous catalyst shaped as presintered moldings and maintained as a steady-state or as a circulating fluidized bed catalyst. The preferred fluidizable presintered moldings are those prepared from a ceramic powder as a catalyst or catalyst carrier having a uniform pore size in the macroporous range.

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patent: 4477591 (1984-10-01), Ramirez
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patent: 5120860 (1992-06-01), Olson et al.
CA113: 152233t Method of producing aziridine . . . ethanolamines. Shimasaki et al., p. 761, 1990.
CA113: 191133e Preparation of aziridine compounds. Ariyoshi et al., p. 701, 1990.
CA117: 233833y Preparation of . . . alkanolamines. Tsuneki et al., p. 854, 1992.
CA118: 191529s Preparation of aziridine. Tsuneki et al., p. 933, 1993.

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