Modified silacrown ethers and methods of making same

Details Modified silacrown ethers and methods of making same Modified silacrown ethers and methods of making same

1984-02-15

1986-06-24

Shaver, Paul F.

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

Organic compounds

Silicon containing

556416, 556446, C07F 708, C07F 710, C07F 718

Patent

active

045968829

ABSTRACT:
Modified silacrown ethers are formed having the general formula: ##STR1## wherein R.sup.1 and R.sup.2 are organic radicals, hydrogen or groups which actively assist in the complexing of metal cations, n is an integer between 3 and 10 inclusive, and R.sup.3 is hydrogen or lower alkyl. These modified silacrown ethers are prepared by reacting a polyalkylene glycol with substituted silanes under conditions promoting cyclization over polymerization. The modified silacrown ethers are useful for forming cation complexes and promoting anionic reactions, particularly in phase transfer reactions either in solution or immobilized on siliceous supports.

REFERENCES:
patent: 4362884 (1982-12-01), Arkles
C. J. Pederson, J. Am. Chem. Soc., 89,7017 (1967).
T. G. Waddell, D. E. Leyden, J. Org. Chem., 46,2406-7, (1981).
R. Kieble, C. Burkhard, J. Am. Chem. Soc., 69, 2689 (1947).
PCR Research Chemicals, Inc., technical bulletin, Crown Ethers, Von Hoang Thi Phung, Pham Ba Chi, F. Kober, Z. Anorg. Allg. Chem., 472,75-82 (1981), (German Language-no translation).

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