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Wang Y, Huang S, Zhang Z, Yan X. Synthesis and Photophysical Properties of Silole-Fused Cycloparaphenylenes. J Org Chem 2024; 89:681-686. [PMID: 38065576 DOI: 10.1021/acs.joc.3c01323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
Herein, we report the introduction of a silole unit into cycloparaphenylenes (CPPs), and two compounds [12]Si3CPP and [16]Si4CPP are obtained by a platinum- and gold-mediated cyclooligomerization strategy. Their optical and electronic properties are studied by UV-vis absorption and fluorescence spectra, which show red shifts and higher photoluminescence quantum yields (PLQYs) compared with the corresponding CPPs.
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Affiliation(s)
- Yedong Wang
- Department of Chemistry, Key Laboratory of Advanced Light Conversion Materials and Biophotonics Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China
| | - Shiqing Huang
- Department of Chemistry, Key Laboratory of Advanced Light Conversion Materials and Biophotonics Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China
| | - Zengyu Zhang
- Department of Chemistry, Key Laboratory of Advanced Light Conversion Materials and Biophotonics Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China
| | - Xiaoyu Yan
- Department of Chemistry, Key Laboratory of Advanced Light Conversion Materials and Biophotonics Department of Chemistry, Renmin University of China, Beijing 100872, People's Republic of China
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Yousif D, Vaghi L, Daniliuc CG, Po R, Papagni A, Rizzo F. Regioselectivity Control in Spirobifluorene Nitration under Mild Conditions: Explaining the Crivello's Reagent Mechanism. J Org Chem 2023; 88:5285-5290. [PMID: 37126427 DOI: 10.1021/acs.joc.2c02596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
The regioselective nitration of 9,9'-spirobifluorene under mild conditions is reported for the first time by operating under Menke's and Crivello's conditions. The optimized protocol allows obtaining 2-nitro and 2,2'-dinitro-9,9'-spirobifluorene in yields of 79 and 95% and, for the first time, 2,2',7-trinitro-9,9'-spirobifluorene with 66% yield. Besides, the role of dinitrate salt in Crivello's protocol has been now clarified, which opens novel scenarios in the preparation of functional materials.
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Affiliation(s)
- Dawod Yousif
- Center for Soft Nanoscience (SoN), Westfälische Wilhelms-Universität Münster, Busso-Peus-Str. 10, 48149 Münster, Germany
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Luca Vaghi
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 36, 48149 Münster, Germany
| | - Riccardo Po
- Eni SpA─Renewables, New Energies and Material Science Research Center, Istituto Guido Donegani, Via Fauser 4, 28100 Novara, Italy
| | - Antonio Papagni
- Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy
| | - Fabio Rizzo
- Center for Soft Nanoscience (SoN), Westfälische Wilhelms-Universität Münster, Busso-Peus-Str. 10, 48149 Münster, Germany
- Istituto di Scienze e Tecnologie Chimiche "G. Natta" (SCITEC), Consiglio Nazionale delle Ricerche (CNR), via G. Fantoli 16/15, 20138 Milano, Italy
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Chen XH, Ma DD, Gao X, Li YM, Jiang DB, Ma C, Cui HL. Nitration of Pyrrolo[2,1- a]isoquinolines. J Org Chem 2023; 88:4649-4661. [PMID: 36947692 DOI: 10.1021/acs.joc.3c00125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2023]
Abstract
We have successfully modified a series of pyrrolo[2,1-a]isoquinolines via direct nitration under mild reaction conditions. Easily accessible nitrates including CAN, Cu(NO3)2·H2O, and Fe(NO3)3·9H2O all can serve as effective nitrating reagents for functionalizing pyrrolo[2,1-a]isoquinolines. Various nitro-bearing pyrrolo[2,1-a]isoquinolines have been efficiently prepared in acceptable to good yields.
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Affiliation(s)
- Xiao-Hui Chen
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P. R. China
| | - Dan-Dan Ma
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P. R. China
- College of Chemistry & Chemical Engineering, Hubei University, Wuhan 430062, Hubei, P. R. China
| | - Xin Gao
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P. R. China
| | - Yun-Meng Li
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P. R. China
| | - Da-Bo Jiang
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P. R. China
| | - Chao Ma
- College of Chemistry & Chemical Engineering, Hubei University, Wuhan 430062, Hubei, P. R. China
| | - Hai-Lei Cui
- Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P. R. China
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Synthesis of Luminescent 2-7 Disubstituted Silafluorenes with alkynyl-carbazole, -phenanthrene, and -benzaldehyde substituents. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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