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Studies on the mechanism of oligomerization of alkynes by group IVB catalysts (1986)

Farona, Michael F. ; Thanedar, Shrinavas ; Famili, Amir

Bognor Regis [u.a.] : Wiley-Blackwell

Journal of Polymer Science Part A: Polymer Chemistry 24 (1986), S. 3529-3540

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ISSN: 0887-624X

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: The homogeneous catalyst systems Cp2MCl2/C2H5AlCl2 (Cp = cyclopentadienyl; M = Ti, Zr) were found to promote homooligomerization of internal and terminal alkynes. Studies using titana- and zirconacyclopentadienes without cocatalysts revealed that these molecules were likely formed in the reactions and were active catalytic intermediates. Isolation of expanded metallacycles indicated that the mechanism of oligomerization proceeded by successive insertion reactions to produce larger metallacycles, eventually giving linear oligomers of low molecular weight.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1002/pola.1986.080241232

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