Journal
ORGANOMETALLICS
Volume 34, Issue 19, Pages 4700-4706Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.organomet.5b00442
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Funding
- NSF (CAREER) [0847735, 1362999, CHE-1048804]
- ACS PRF
- MRSEC Program of the National Science Foundation [NSF DMR 1121053]
- Direct For Mathematical & Physical Scien [1362999] Funding Source: National Science Foundation
- Division Of Chemistry [1362999] Funding Source: National Science Foundation
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The activity of several yttrium alkoxide and aryloxide complexes supported by a ferrocene-based ligand incorporating two thiol phenolates, thiolfan (1,1'-bis(2,4-di-tert-butyl-6-thiomethylenephenoxy)ferrocene), was studied. The tert-butoxide complex could only be isolated in the ate form, while a monophenoxide complex could be obtained for OAr = 2,6-di-tert-butylphenolate. The synthetic utility of these yttrium complexes has been demonstrated by the ring-opening polymerization of cyclic esters, with a high activity toward epsilon-caprolactone and delta-valerolactone being found for the yttrium phenoxide complex.
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