Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/157594
Title: Lewis pair polymerization of alkyl methacrylate by amidinato silicon compounds and Tris(pentafluorophenyl)borane
Authors: Chia, Cher-Chiek
Li, Yan
Xiao, Longqiang
Yang, Ming-Chung
Su, Ming-Der
So, Cheuk-Wai
Keywords: Science::Chemistry
Issue Date: 2022
Source: Chia, C., Li, Y., Xiao, L., Yang, M., Su, M. & So, C. (2022). Lewis pair polymerization of alkyl methacrylate by amidinato silicon compounds and Tris(pentafluorophenyl)borane. European Journal of Organic Chemistry, 2022(13), e202200003-. https://dx.doi.org/10.1002/ejoc.202200003
Project: NRF2018-NRF-ANR026 Si-POP
Journal: European Journal of Organic Chemistry
Abstract: 0.5 mol% of the amidinato disilyne [LSi:]2 (1, L = PhC(NtBu)2) and 1 mol% of B(C6F5)3 cooperatively polymerized methyl methacrylate (MMA) to form poly(MMA) with the H and CH2C(=CH2)COMe end groups (P1, Mn = 3.1 ×103 gmol-1; repeating unit, n = 31; polydispersity index, Đ: 1.55). The catalytic mechanism is proposed, where compound 1 could react with MMA and B(C6F5)3 to form a zwitterionic active species [LSi{CH2C(Me)=C(OMe)O}B(C6F5)3]2. The latter could activate MMA molecules affording poly(MMA) chains on the silicon centers. The methyl group of the last enolate of a poly(MMA) chain on a silicon center could then react with the Si-C bond of the adjacent poly(MMA) chain to form P1, as well as regenerate compound 1 and B(C6F5)3. When compound 1 was replaced by the amidinato amidosilylene [LSiN(SiMe3)2] (2), 1 mol% of compound 2 and 1 mol% of B(C6F5)3 mediated living MMA polymerization in toluene to form the poly(MMA) P2 (Mn = 1.04 ×104 gmol-1; Đ: 1.97).
URI: https://hdl.handle.net/10356/157594
ISSN: 1434-193X
DOI: 10.1002/ejoc.202200003
Rights: This is the peer reviewed version of the following article: Chia, C., Li, Y., Xiao, L., Yang, M., Su, M. & So, C. (2022). Lewis pair polymerization of alkyl methacrylate by amidinato silicon compounds and Tris(pentafluorophenyl)borane. European Journal of Organic Chemistry, 2022(13), e202200003-, which has been published in final form at https://doi.org/10.1002/ejoc.202200003. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: embargo_20230412
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

Files in This Item:
File Description SizeFormat 
Accepted Article.pdf
  Until 2023-04-12
968.7 kBAdobe PDFUnder embargo until Apr 12, 2023

Page view(s)

26
Updated on Jun 23, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.