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Initiating abilities of diphosphine- and diamine-ligated Pd complexes/NaBPh systems for C1 polymerization of diazoacetates
A series of well-defined Pd complexes bearing diphosphines or diamines and a dichloroquinone-derived unit as ligands were newly prepared and their initiating abilities in conjunction with NaBPh 4 for the C1 polymerization of diazoacetates were investigated. Among the (diphosphine)Pd( ii )Cl(Cl-quino...
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| Published in: | Polymer chemistry 2023-02, Vol.14 (9), p.17-118 |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | |
| Online Access: | Get full text |
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| Summary: | A series of well-defined Pd complexes bearing diphosphines or diamines and a dichloroquinone-derived unit as ligands were newly prepared and their initiating abilities in conjunction with NaBPh
4
for the C1 polymerization of diazoacetates were investigated. Among the (diphosphine)Pd(
ii
)Cl(Cl-quinonyl) complexes examined here, square planar
cis
(diphosphine: diphenylphosphinoferrocene) and distorted square planar
trans
(diphosphine: xantphos) complexes with NaBPh
4
yielded highly syndiotactic polymers from ethyl diazoacetate despite low polymer yields. A series of Pd(0) complexes bearing a bidentate diamine such as
N
,
N
,
N
′,
N
′-tetramethyl-1,3-propanediamine and 2,3-dichloronaphthoquinone in conjunction with NaBPh
4
polymerized diazoacetates to afford moderately syndiotactic polymers in moderate yields, indicating that the (diamine)Pd(0)(dichloroquinone) framework could be a promising general platform for an initiating system with high activity and stereoselectivity for the C1 polymerization of diazoacetates.
(Diamine)Pd(0)(dichlone)/NaBPh
4
systems have been revealed to be effective initiators for diazoacetate polymerization, yielding moderately syndiotactic polymers in moderate yields. |
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| ISSN: | 1759-9954 1759-9962 |
| DOI: | 10.1039/d2py01548j |