Silacyclobutane as "carbanion pump" in anionic polymerization. 2. Effective trapping of the initially formed carbanion by diphenylethylene

Authors
Sheikh, RK Tharanikkarasu, K Imae, I Kawakami, Y
Citation
Rk. Sheikh et al., Silacyclobutane as "carbanion pump" in anionic polymerization. 2. Effective trapping of the initially formed carbanion by diphenylethylene, MACROMOLEC, 34(13), 2001, pp. 4384-4389
Citations number
18
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
MACROMOLECULES
ISSN journal
00249297 → ACNP
Volume
34
Issue
13
Year of publication
2001
Pages
4384 - 4389
Database
ISI
SICI code
0024-9297(20010619)34:13<4384:SA"PIA>2.0.ZU;2-L
Abstract
The initially formed carbanion from dimethylsilacyclobutane and potassium t ert-butoxide was trapped in as high as 88% yield in the presence of 1,1-dip henylethylene as evidenced by quenching with methyl iodide. The initiator e fficiency of 76% was obtained by using a combination of potassium tert-buto xide, dimethylsilacyclobutane, and 1,1-diphenylethylene carbanion pump syst em as an initiator in the polymerization of methyl methacrylate.