1
|
Photoluminescent ionic metal halides based on s2 typed ions and aprotic ionic liquid cations. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214185] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
2
|
Hu C, Zhang J, Yang H, Guo L, Cui C. Synthesis of Cationic Silaamidinate Germylenes and Stannylenes and the Catalytic Application for Hydroboration of Pyridines. Inorg Chem 2021; 60:14038-14046. [PMID: 34505507 DOI: 10.1021/acs.inorgchem.1c01314] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The N-heterocyclic germylenes and stannylenes LSi(NAr)2EX (L = PhC(NtBu)2, Ar = 2,6-iPr2C6H3; E = Ge, Sn; X = Cl, CF3SO3, BPh4) supported by the bulky silaamidinate ligand [LSi(NAr)2]- have been synthesized and fully characterized. The germylene triflate LSi(NAr)2GeOTf (3b) and dimeric borate [LSi(NAr)2Ge]2ClBPh4 (3a) enabled highly regio- and chemoselective catalytic hydroboration of pyridines and may represent the most active catalytic system for the transformation. DFT calculations disclosed that the cationic germylene [LSi(NAr)2Ge]+ with a low-lying LUMO energy initiated the catalytic process. In contrast, the analogous amidinate germylene triflates are almost inactive, indicating the silaamidinate ligand is essential for the stabilization of cationic species.
Collapse
Affiliation(s)
- Chaopeng Hu
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Jianying Zhang
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Hao Yang
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Lulu Guo
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry and College of Chemistry, Nankai University, Tianjin 300071, People's Republic of China
| |
Collapse
|
3
|
Li J, Daniliuc CG, Kehr G, Erker G. Formation of amidino-borate derivatives by a multi-component reaction. Org Biomol Chem 2021; 19:5551-5554. [PMID: 34076028 DOI: 10.1039/d1ob00775k] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Cyclohexene reacts with the (Fmes)BH2·SMe2 borane reagent and three molar equivalents of the isonitrile CN-Xyl to give the five membered 1,3-BN heterocyclic product 7 that contains a zwitterionic borata-amidinium moiety and a cyclohexenyl substituent. The analogous five-component coupling between cyclopentene, (Fmes)BH2·SMe2 and CN-Xyl in a 1 : 1 : 3 molar ratio gives the related cyclic amidino-borate derivative 10. The reaction of the (Fmes)BH2 derived frustrated Lewis pair 12, in situ generated or employed as the isolated dimer, reacts with 3 CN-Xyl equivs. at elevated temperature (60 °C) to yield the analogous coupling product 13.
Collapse
Affiliation(s)
- Jun Li
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 40, 48149 Münster, Germany.
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 40, 48149 Münster, Germany.
| | - Gerald Kehr
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 40, 48149 Münster, Germany.
| | - Gerhard Erker
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstr. 40, 48149 Münster, Germany.
| |
Collapse
|
4
|
Uchiyama Y, Kimura S, Kurotaki T, Sawamura Y, Kikuchi Y, Abe S, Runyon JW, Dolphin JS, Schinnen C, Arduengo III AJ. Synthesis of N-substituted amidinoheteroles and their reactivity towards Burgess reagent. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2019.1669602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Yosuke Uchiyama
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Japan
- Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
- STanCE, Technology for a Sustainable Chemical Economy, Tuscaloosa, AL, USA
| | - Shinobu Kimura
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Japan
| | - Takanori Kurotaki
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Japan
| | - Yukihiro Sawamura
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Japan
| | - Yuichi Kikuchi
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Japan
| | - Shinya Abe
- Department of Chemistry, School of Science, Kitasato University, Sagamihara, Japan
| | - Jason W. Runyon
- Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
| | - Joshua S. Dolphin
- Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
| | | | - Anthony J. Arduengo III
- Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
- STanCE, Technology for a Sustainable Chemical Economy, Tuscaloosa, AL, USA
| |
Collapse
|
5
|
Fang H, Jing H, Zhang A, Ge H, Yao Z, Brothers PJ, Fu X. Synthesis, Electronic Structure, and Reactivity Studies of a 4-Coordinate Square Planar Germanium(IV) Cation. J Am Chem Soc 2016; 138:7705-10. [PMID: 27243114 DOI: 10.1021/jacs.6b03547] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A tetra-coordinate, square planar germanium(IV) cation [(TPFC)Ge](+) (TPFC = tris(pentafluorophenyl)corrole) was synthesized quantitatively by the reaction of (TPFC)Ge-H with [Ph3C](+)[B(C6F5)4](¯). The highly reactive [(TPFC)Ge](+) cation reacted with benzene to form phenyl complex (TPFC)Ge-C6H5 through an electrophilic pathway. The key intermediate, a σ-type germylium-benzene adduct, [(TPFC)Ge(η(1)-C6H6)](+), was isolated and characterized by single-crystal X-ray diffraction. Deprotonation of [(TPFC)Ge(η(1)-C6H6)](+) cation led to the formation of (TPFC)Ge-C6H5. [(TPFC)Ge](+) also reacted with ethylene and cyclopropane in benzene at room temperature to form (TPFC)Ge-CH2CH2C6H5 and (TPFC)Ge-CH2CH2CH2C6H5, respectively. The observed electrophilic reactivity is ascribed to the highly exposed cationic germanium center with novel frontier orbitals comprising two vacant sp-hybridized orbitals that are not conjugated to π-system. The three electron-withdrawing pentafluorophenyl groups on the corrole ligand also enhance the electrophilicity of the cationic germanium corrole.
Collapse
Affiliation(s)
- Huayi Fang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Huize Jing
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Aixi Zhang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Haonan Ge
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Zhengmin Yao
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| | - Penelope J Brothers
- School of Chemical Sciences, University of Auckland , Private Bag 92019, Auckland 1042, New Zealand
| | - Xuefeng Fu
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University , Beijing 100871, China
| |
Collapse
|
6
|
Affiliation(s)
- Joydeb Goura
- Department
of Chemistry, Indian Institute of Technology-Kanpur, Kanpur 208 016, India
| | - Vadapalli Chandrasekhar
- Department
of Chemistry, Indian Institute of Technology-Kanpur, Kanpur 208 016, India
- National Institute of Science Education and Research, Institute of Physics Campus, Sachivalaya Marg,
Sainik School, Bhubaneswar, Orissa 751 005, India
| |
Collapse
|
7
|
Prakash GKS, Wang F, Zhang Z, Haiges R, Rahm M, Christe KO, Mathew T, Olah GA. Long-Lived Trifluoromethanide Anion: A Key Intermediate in Nucleophilic Trifluoromethylations. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406505] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
8
|
Prakash GKS, Wang F, Zhang Z, Haiges R, Rahm M, Christe KO, Mathew T, Olah GA. Long-Lived Trifluoromethanide Anion: A Key Intermediate in Nucleophilic Trifluoromethylations. Angew Chem Int Ed Engl 2014; 53:11575-8. [DOI: 10.1002/anie.201406505] [Citation(s) in RCA: 100] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Indexed: 11/07/2022]
|