In:
Journal of Polymer Science Part A: Polymer Chemistry, Wiley, Vol. 57, No. 3 ( 2019-02), p. 297-304
Abstract:
We report Suzuki–Miyaura coupling polymerization of tetraalkoxy‐substituted 4‐bromostilbene‐4′‐boronic acid 1 with several t ‐Bu 3 P‐ligated Pd initiators; this is the first example of catalyst‐transfer condensation polymerization (CTCP) of a monomer containing a carbon–carbon double bond. When o ‐tolylPd( t Bu 3 P)Br was used as the initiator, the o ‐tolyl group was not introduced at the polymer end, but polymer with boronic acid at one end and bromine at the other was obtained. However, when we employed stilbenePd( t Bu 3 P)I generated in situ from iodostilbene and Pd( t Bu 3 P)G2 precatalyst, or isolated ArPd( t Bu 3 P)X (Ar, X = Ph, I; o ‐tolyl, I; and Ph, Br), the aryl group was introduced at the polymer end, indicating that CTCP of 1 proceeded. Therefore, the iodide and aryl group of the Pd initiator complex is crucial for CTCP of 1 . However, the molecular weight distribution of the obtained polymer was broad, possibly because coordination of the carbon–carbon double bond of 1 to ArPd( t Bu 3 P)I resulted in slow initiation. © 2018 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2019 , 57 , 297–304
Type of Medium:
Online Resource
ISSN:
0887-624X
,
1099-0518
Language:
English
Publisher:
Wiley
Publication Date:
2019
detail.hit.zdb_id:
3004641-5
detail.hit.zdb_id:
1473076-5
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