N‑Substituted Iminocaprolactams as Versatile
and Low Cost Ligands in Group 4 Metal Initiators for the Living Coordinative
Chain Transfer Polymerization of α‑Olefins
Posted on 2017-10-18 - 19:42
A new
structurally diverse ligand for metal complexes, the (κ2-N,N)-iminocaprolactam group,
that can be obtained in large bulk quantities from inexpensive and
readily available starting materials, is introduced. In the present
report, the ability of this family of ligands to provide a viable
substitute for the acyclic amidinate moiety of a class of cationic
monocyclopentadienyl, amidinate (CPAM) group 4 metal initiators for
the living coordination polymerization (LCP) and living coordinative
chain transfer polymerization (LCCTP) of α-olefins is documented
through the synthesis of (η5-C5Me5)Hf[(R)NimcapN](Me)2 [R = benzyl (1), CH2(1-naphthyl) (2), and tert-butyl [C(CH3)3] (3)] as preinitiators for the (stereoselective) LCP and LCCTP of propene.
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Wei, Jia; Duman, Leila M.; Redman, Daniel W.; Yonke, Brendan L.; Zavalij, Peter Y.; Sita, Lawrence R. (2017). N‑Substituted Iminocaprolactams as Versatile
and Low Cost Ligands in Group 4 Metal Initiators for the Living Coordinative
Chain Transfer Polymerization of α‑Olefins. ACS Publications. Collection. https://doi.org/10.1021/acs.organomet.7b00643
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AUTHORS (6)
JW
Jia Wei
LD
Leila M. Duman
DR
Daniel W. Redman
BY
Brendan L. Yonke
PZ
Peter Y. Zavalij
LS
Lawrence R. Sita
KEYWORDS
metal complexesstereoselectiveligandbutylVersatilematerialpreinitiatorpropenegroup 4 metal initiatorsLCCTPbulk quantitiestertα- olefinsnaphthylsubstituteimcapHfabilityLiving Coordinative Chain Transfer PolymerizationIminocaprolactamCPAMLCPcoordinative chain transfer polymerizationGroup 4 Metal InitiatorsOlefinsynthesisCHcationic monocyclopentadienylbenzyliminocaprolactamcoordination polymerizationC 5acyclic amidinate moietyLow Cost Ligandsquantity