Silacrown ethers, method of making same, and use as phase-transf

Details Silacrown ethers, method of making same, and use as phase-transf Silacrown ethers, method of making same, and use as phase-transf

1981-11-23

1982-12-07

Shaver, Paul F.

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

Organic compounds

Silicon containing

260464, 560236, 570143, 570145, 570191, 570196, 570197, 570261, C07F 708, C07F 718

Patent

active

043628842

ABSTRACT:
Organosilicon compounds referred to as silacrown ethers or "silacrowns" are of the general formula: ##STR1## where R.sup.1 and R.sup.2 are organic radicals or hydrogen and n is an integer between 4 and 10 inclusive. Silacrown ethers are prepared by reacting polyethylene glycol with substituted silanes under conditions promoting cyclization over polymerization. Silacrown ethers may be employed as phase-transfer catalysts in solution or immobilized on siliceous supports.

REFERENCES:
patent: 3078293 (1963-02-01), Ender
patent: 3475478 (1969-10-01), Simmler
patent: 3505380 (1970-04-01), Berger
patent: 3539610 (1970-11-01), Berger
patent: 3987061 (1976-10-01), Pedersen
patent: 4098808 (1978-07-01), Wolfers et al.
C. J. Pederson, J. Am. Chem. Soc., 89, 7017, (1967).
R. Kieble, C. Burkhard, J. Am. Chem. Soc., 69, 2689, (1947).

Affiliated with

Also associated with

Rating

Silacrown ethers, method of making same, and use as phase-transf does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Silacrown ethers, method of making same, and use as phase-transf, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Silacrown ethers, method of making same, and use as phase-transf will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1904280