Process for the selective synthesis of ethylene diamines

Details Process for the selective synthesis of ethylene diamines Process for the selective synthesis of ethylene diamines

1988-04-29

1989-08-08

Ramsuer, Robert W.

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

Organic compounds

Chalcogen in the nitrogen containing substituent

548524, 564480, C07D29502, C07C 8506

Patent

active

048554251

ABSTRACT:
The present invention is a process for the selective synthesis of alkanediamines by reacting a secondary amine with an alkanediol. High conversions and high selectivity for the production of alkanediamines is achieved by carrying out the reaction in the presence of a compound or complex of ruthenium in the absence of an organic phosphine co-catalyst.

REFERENCES:
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patent: 4487967 (1984-12-01), Stogryn et al.
patent: 4745190 (1988-05-01), Marsella
R. Grigg et al, "Transition Metal-Catalysed N-Alkylation of Amines by Alcohols", J.C.S. Chem. Comm. 1981, pp. 611-612.
S. Murahashi et al, "Ruthenium Catalyzed Synthesis of Secondary or Tertiary Amines from Amines and Alcohols", Tetrahedron Letters, (vol. 23, No. 2, pp. 229-232.
A. Arcelli et al, "Selective Conversion of Primary Amines into N,N-Dimethyl-Alkyl- or N,N-Dialkylmethyl-Amines with Methanol and RuCl.sub.2 (Ph.sub.3 P).sub.3 ", Journal of Organometallic Chemistry (vol. 235, pp. 93-96, 1982).
Y. Watanabe et al, "Ruthenium Complex Catalyzed N-Heterocyclization. Syntheses of N-Substituted Piperidines, Morpholines, and Piperazines from Amines and 1,5-Diols", J. Org. Chem., 50, 1365 (1985).

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