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Miyashita Y, Nakata N, Ishii A. Synthesis and Properties of 1‐(Dialkylstannyl)‐1,4‐diphenyl‐1,3‐butadiene Fused with a Dibenzobarrelene and the Corresponding Pentaorganostannate. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yasuha Miyashita
- Department of Chemistry Graduate School of Science and Engineering Saitama University 255 Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
| | - Norio Nakata
- Department of Chemistry Graduate School of Science and Engineering Saitama University 255 Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
| | - Akihiko Ishii
- Department of Chemistry Graduate School of Science and Engineering Saitama University 255 Shimo-okubo, Sakura-ku Saitama 338-8570 Japan
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Clark JA, Thacker PJ, McGill CJ, Miles JR, Westmoreland PR, Efimenko K, Genzer J, Santiso EE. DFT Analysis of Organotin Catalytic Mechanisms in Dehydration Esterification Reactions for Terephthalic Acid and 2,2,4,4-Tetramethyl-1,3-cyclobutanediol. J Phys Chem A 2021; 125:4943-4956. [PMID: 34101445 DOI: 10.1021/acs.jpca.1c00850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Polyesters synthesized from 2,2,4,4-tetramethyl-1,3-cyclobutanediol (TMCD) and terephthalic acid (TPA) are improved alternatives to toxic polycarbonates based on bisphenol A. In this work, we use ωB97X-D/LANL2DZdp calculations, in the presence of a benzaldehyde polarizable continuum model solvent, to show that esterification of TMCD and TPA will reduce and subsequently dehydrate a dimethyl tin oxide catalyst, becoming ligands on the now four-coordinate complex. This reaction then proceeds most plausibly by an intramolecular acyl-transfer mechanism from the tin complex, aided by a coordinated proton donor such as hydronium. These findings are a key first step in understanding polyester synthesis and avoiding undesirable side reactions during production.
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Affiliation(s)
- Jennifer A Clark
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Pranav J Thacker
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Charles J McGill
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Jason R Miles
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Phillip R Westmoreland
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Kirill Efimenko
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Jan Genzer
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Erik E Santiso
- Department of Chemical and Biomolecular Engineering, North Carolina State University, Raleigh, North Carolina 27695, United States
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Controlling morphology and catalysis capability of Sn/Ce porous coordination polymers by cerium coordination for catalytic conversion of glucose to 5-hydroxymethylfurfural. J Taiwan Inst Chem Eng 2020. [DOI: 10.1016/j.jtice.2020.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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