Organoclay triphase catalysts

Details Organoclay triphase catalysts Organoclay triphase catalysts

1991-02-14

1992-03-24

Evans, J. E.

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

Organic compounds

Thiocyanate esters

502164, 558344, 558378, 568 59, 568437, 568630, 568814, 585436, C07C 29143, C07C 4116, C07C 4529, B01J 3100

Patent

active

050990543

ABSTRACT:
In a method of carrying out organic conversions via heterogeneous phase transfer catalysis by contacting immiscible liquid phases containing respective substances capable of interacting, with a solid catalyst to promote the transfer of reactive species from one liquid phase to another, the improvement comprises employing as catalyst a cation exchanged form of a 2:1 layered silicate clay with layer charge densities in the range of above 0.4 to 2.0 containing an onium ion containing one or more alkyl hydrocarbon chains and maintaining the materials in emulsified form by having a sufficient chain length of an alkyl group relative to the charge density of the clay.

REFERENCES:
E. V. Dehmlow and S. S. Dehmlow, "Phase Transfer Catalysis", Verlag Chemie, Basel, (1983), pp. 1-3, 65-68, 371.
P. Monsef-Mirzai and W. R. McWhinnie, Inorg. Chim. Acta, vol. 52, (1981), pp. 211-214.
S. L. Regen, J. Amer. Chem. Soc., vol. 98, (1976), pp. 6270 to 6274.
S. L. Regen, J. Amer. Chem. Soc., vol. 97, (1975), pp. 5956-5957.
S. L. Regen, J. Org. Chem., vol. 42, (1977), pp. 875-879.
M. Schneider et al., J. Org. Chem., vol. 47, (1982), pp. 364-365.
P. Tundo et al., J. Amer. Chem. Soc., vol. 104, pp. 6547 to 6551 and pp. 6551 to 6555, (1982).
Kadkhodayan and Pinnavaia, "Journal of Molecular Catalysis", vol. 21, pp. 109-117 (1983).
Cornelis and Laszlo, "Synthesis", pp. 162-163 (Feb. 1982).

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