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Yoshifuji M. Low coordinate phosphorus compounds for 40 years in memory of the late professor François Mathey, Ecole Polytechnique. PHOSPHORUS SULFUR 2022. [DOI: 10.1080/10426507.2021.2011883] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
- Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
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Yoshifuji M. Stereochemical features of low-coordinate organophosphorus compounds. PHOSPHORUS SULFUR 2019. [DOI: 10.1080/10426507.2018.1541896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Masaaki Yoshifuji
- Department of Chemistry, Tohoku University, Sendai, Japan
- Department of Chemistry, The University of Alabama, Tuscaloosa, AL, USA
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Abstract
AbstractThe character of bis(2,4,6-tri-tert-butylphenyl)diphosphene is described experimentally and theoretically. The diphosphene is stabilized by steric protection and the structure can be characterized by spectroscopic as well as crystallographic analyses. Theoretical calculation on the diphosphene strongly suggests that the P=P bond is an isolated double bond and that the P–C bonds are single covalent bond. The reactivity has been investigated including photolysis, oxidation, sulfurization, selenation, transition-metal complex formation, and carbene addition. Plausible mechanistic scheme for the reaction of the diphosphene with 3,4,5,6-tetrachlorocyclohexa-3,5-diene-1,2-dione (or tetrachloro-o-benzoquinone) to a pentavalent spiro product is discussed based on the product analysis.
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Affiliation(s)
- Masaaki Yoshifuji
- 1Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza-Aoba, Aoba, Sendai, Miyagi, 980-0845, Japan
- 2Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama, AL 35487-0336, USA
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Yoshifuji M. Sterically protected organophosphorus compounds of unusual structures. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2016.1211655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, Japan
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama, USA
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Sasaki S, Yoshifuji M. Synthesis and properties of a sterically crowded triarylphosphine bearing an ester group. PHOSPHORUS SULFUR 2016. [DOI: 10.1080/10426507.2015.1114943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Shigeru Sasaki
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Japan
| | - Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai, Japan
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Affiliation(s)
- Masaaki Yoshifuji
- Department of Chemistry, Tohoku University, Sendai, Japan, http://www.yoshifuji.org/~masaaki/
- Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama, USA
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Sasaki S, Shimizu Y, Yoshifuji M. Synthesis, Structure, and Properties of [4-Methyl-2,6-Bis(2-Methylphenyl)Phenyl]Bis(2,4,6-Triisopropylphenyl)Phosphine. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2014.984031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Shigeru Sasaki
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza-Aoba, Aoba-ku, 980-8578, Sendai, Japan
| | - Yusuke Shimizu
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza-Aoba, Aoba-ku, 980-8578, Sendai, Japan
| | - Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki Aza-Aoba, Aoba-ku, 980-8578, Sendai, Japan
- Present address: Department of Chemistry, The University of Alabama, Tuscaloosa, 35487-0336, Alabama, USA
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Yoshifuji M, Ito S. Studies on Intramolecular Cyclization of 2,4,6-Tri- Tert-Butylphenyl–P=C:In Memory of Professor Dr. Friedrich Bickelhaupt, Scheikundig Laboratorium, Vrije Universiteit, Amsterdam. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2014.974753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai, Japan
- Department of Chemistry, University of Alabama, Tuscaloosa, Alabama, USA
| | - Shigekazu Ito
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai, Japan
- Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, Ookayama, Meguro, Tokyo, Japan
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Sasaki S, Izawa M, Yoshifuji M. Synthesis and Structure of Sterically Crowded Triarylphosphine Bearing 4-Bromo-2,6-Bis(4-tert-Butylphenyl)Phenyl Group. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2014.907291] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Shigeru Sasaki
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Masatoshi Izawa
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
| | - Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science, Tohoku University, Sendai, 980-8578, Japan
- Present address of M. Yoshifuji: Department of Chemistry, The University of Alabama, Tuscaloosa, AL 35487-0336, USA
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Affiliation(s)
- Shigeru Sasaki
- Department of Chemistry, Graduate School of Science; Tohoku University; Sendai 980-8578 Japan
| | - Katsuhide Sutoh
- Department of Chemistry, Graduate School of Science; Tohoku University; Sendai 980-8578 Japan
| | - Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science; Tohoku University; Sendai 980-8578 Japan
- Department of Chemistry; The University of Alabama; Tuscaloosa AL 35487-0336
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Yoshifuji M, Ito S. Theoretical studies on the intramolecular cyclization of 2,4,6-t-Bu3C6H2P=C: and effects of conjugation between the P=C and aromatic moieties. Beilstein J Org Chem 2014; 10:1032-6. [PMID: 24991254 PMCID: PMC4077427 DOI: 10.3762/bjoc.10.103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2013] [Accepted: 02/26/2014] [Indexed: 11/23/2022] Open
Abstract
The intramolecular C–H insertion of the Mes*-substituted phosphanylidenecarbene [Mes*P=C:] (Mes* = 2,4,6-t-Bu3C6H2) and physicochemical properties of the cyclized product, 6,8-di-tert-butyl-3,4-dihydro-4,4-dimethyl-1-phosphanaphthalene were studied based on ab initio calculations. Whereas the alternative Fritsch–Buttenberg–Wiechell-type rearrangement requires almost no activation energy, the intramolecular cyclization needs an activation energy of 12.3 kcal/mol at the MP2(full)/6-31G(d) condition. DFT calculations supported that the optimized structure of the cyclization product of Mes*P=C: suggests remarkable conjugation effects between the nearly coplanar P=C skeleton and the aryl moiety.
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Affiliation(s)
- Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan
| | - Shigekazu Ito
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan ; Department of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, Japan
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Sasaki S, Sasaki K, Watanabe M, Ogawa K, Morita N, Yoshifuji M. Synthesis, Redox Properties, and Electronic Spectra of Sterically Crowded Triarylphosphines Conjugated with Electron Acceptors. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2012.741163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Shigeru Sasaki
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba-ku , Sendai , Japan
| | - Kohji Sasaki
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba-ku , Sendai , Japan
| | - Mariko Watanabe
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba-ku , Sendai , Japan
| | - Kazunobu Ogawa
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba-ku , Sendai , Japan
| | - Noboru Morita
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba-ku , Sendai , Japan
| | - Masaaki Yoshifuji
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba-ku , Sendai , Japan
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Yoshifuji M, Ito S. Phosphorus Version of the Fritsch-Buttenberg-Wiechell Reaction. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2012.743144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Masaaki Yoshifuji
- a Department of Chemistry , Graduate School of Science, Tohoku University , Aoba , Sendai , Japan
| | - Shigekazu Ito
- b Department of Applied Chemistry , Graduate School of Science and Engineering , Tokyo
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Ito S, Kikuchi M, Miura J, Morita N, Yoshifuji M. Spectroscopic and stability studies on unsymmetrical 1,3-dialkyl-1,3-diphosphacyclobutane-2,4-diyls. J PHYS ORG CHEM 2011. [DOI: 10.1002/poc.1957] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shigekazu Ito
- Department of Applied Chemistry, Graduate School of Science and Engineering; Tokyo Institute of Technology; 2-12-1 Ookayama; Meguro; Tokyo; 152-8552; Japan
| | - Manabu Kikuchi
- Department of Chemistry, Graduate School of Science; Tohoku University; Aoba; Sendai; 980-8578; Japan
| | - Joji Miura
- Department of Chemistry, Graduate School of Science; Tohoku University; Aoba; Sendai; 980-8578; Japan
| | - Noboru Morita
- Department of Chemistry, Graduate School of Science; Tohoku University; Aoba; Sendai; 980-8578; Japan
| | - Masaaki Yoshifuji
- Department of Chemistry; The University of Alabama; Tuscaloosa; 35487-0336; USA
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Ito S, Miyake H, Yoshifuji M. Unique molecular distortion in the 2,4,6-tri-t-butylphenyl group. ARKIVOC 2011. [DOI: 10.3998/ark.5550190.0013.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Sasaki S, Sasaki K, Yoshifuji M. Synthesis, structure, and properties of extended π-conjugated systems bearing sterically crowded triarylphosphines. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.07.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sasaki S, Murakami M, Murakami F, Yoshifuji M. Synthesis and redox properties of sterically crowded triarylphosphine and tetraaryldiphosphane bearing phenothiazinyl groups. Heteroatom Chem 2011. [DOI: 10.1002/hc.20714] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Yoshifuji M, Osborn ST, Arduengo AJ, Belmore KA, Ito S. NMR Studies of 1-tert-Butyl-3-methyl-2,4-bis(2,4,6-tri-tert-butylphenyl)-1,3-diphosphacyclobutane-2,4-diyl. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.518183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Masaaki Yoshifuji
- a Department of Chemistry , The University of Alabama , Tuscaloosa , Alabama , USA
| | - Stefan T. Osborn
- a Department of Chemistry , The University of Alabama , Tuscaloosa , Alabama , USA
| | - Anthony J. Arduengo
- a Department of Chemistry , The University of Alabama , Tuscaloosa , Alabama , USA
| | - Kenneth A. Belmore
- a Department of Chemistry , The University of Alabama , Tuscaloosa , Alabama , USA
| | - Shigekazu Ito
- b Department of Applied Chemistry, Graduate School of Science and Engineering , Tokyo Institute of Technology , Ookayama , Tokyo , Japan
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Ito S, Miura J, Morita N, Yoshifuji M, Arduengo AJ. Modeling the Direct Activation of Dihydrogen by a P 2C 2-Cyclic Biradical: Formation of a Cyclic Bis(P-H λ 5-phosphorane). PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.518182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Shigekazu Ito
- a Department of Applied Chemistry, Graduate School of Science and Engineering , Tokyo Institute of Technology , Ookayama , Tokyo , Japan
| | - Joji Miura
- b Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Noboru Morita
- b Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Masaaki Yoshifuji
- c Department of Chemistry , The University of Alabama , Tuscaloosa , Alabama , USA
| | - Anthony J. Arduengo
- c Department of Chemistry , The University of Alabama , Tuscaloosa , Alabama , USA
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Ito S, Miura J, Morita N, Yoshifuji M, Arduengo AJ. Diverse Reactions of Sterically Protected 1,3-Diphosphacyclobutane-2,4-diyls with Hydride. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.518181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Shigekazu Ito
- a Department of Applied Chemistry, Graduate School of Science and Engineering , Tokyo Institute of Technology , Ookayama , Tokyo , Japan
| | - Joji Miura
- b Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Noboru Morita
- b Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Masaaki Yoshifuji
- c Department of Chemistry , The University of Alabama , Tuscaloosa , Alabama , USA
| | - Anthony J. Arduengo
- c Department of Chemistry , The University of Alabama , Tuscaloosa , Alabama , USA
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Yoshifuji M, Osborn ST, Arduengo AJ, Belmore KA, Ito S. Intensive NMR study of 1-t-butyl-3-methyl-2,4-bis(2,4,6-tri-t-butylphenyl)-1,3-diphosphacyclobutane-2,4-diyl. Heteroatom Chem 2011. [DOI: 10.1002/hc.20684] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Affiliation(s)
- Masaaki Yoshifuji
- a Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , 980-8578 , Japan
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Sasaki S, Murakami F, Murakami M, Chowdhury R, Sutoh K, Yoshifuji M. Construction of Stable Redox Systems Composed of the Crowded Triarylphosphines. PHOSPHORUS SULFUR 2010. [DOI: 10.1080/10426500212291] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Shigeru Sasaki
- a Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Fumiki Murakami
- a Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Midori Murakami
- a Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Rainy Chowdhury
- a Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Katsuhide Sutoh
- a Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
| | - Masaaki Yoshifuji
- a Department of Chemistry, Graduate School of Science , Tohoku University , Sendai , Japan
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Ito S, Miura J, Morita N, Yoshifuji M, Arduengo AJ. Synthesis and properties of oligo(biradicals) composed of 1,3-diphosphacyclobutane-2,4-diyl units and benzyl-type linkers. Heteroatom Chem 2010. [DOI: 10.1002/hc.20625] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ito S, Miura J, Morita N, Yoshifuji M, Arduengo AJ. Synthesis and physicochemical properties of stable 1,3-diphosphacyclobutane-2,4-diyls bearing sulfanyl groups. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.04.007] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Sasaki S, Ogawa K, Watanabe M, Yoshifuji M. Synthesis and Properties of Sterically Crowded Triarylphosphines Bearing Naphthoquinone Moieties. Organometallics 2010. [DOI: 10.1021/om900526m] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shigeru Sasaki
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Kazunobu Ogawa
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Mariko Watanabe
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai 980-8578, Japan
| | - Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aramaki-Aoba, Aoba-ku, Sendai 980-8578, Japan
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Ito S, Miura J, Morita N, Yoshifuji M, Arduengo III AJ. Diverse reactions of sterically-protected 1,3-diphosphacyclobutane-2,4-diyls with hydride. Dalton Trans 2010; 39:8281-7. [DOI: 10.1039/c0dt00532k] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Ito S, Miura J, Morita N, Yoshifuji M, Arduengo AJ. Modeling the Direct Activation of Dihydrogen by a P2C2Cyclic Biradical: Formation of a Cyclic Bis(P−H λ5-phosphorane). Inorg Chem 2009; 48:8063-5. [DOI: 10.1021/ic901072z] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Affiliation(s)
- Shigekazu Ito
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
| | - Hideaki Miyake
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
| | - Masaaki Yoshifuji
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
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Ito S, Miura J, Morita N, Yoshifuji M, Arduengo AJ. Catenation of 1,3-Diphosphacyclobutane-2,4-diyl Units Having 2,4,6-Tri-tert-butylphenyl Protecting Groups and a P-sec-Butyl Group in the Ring. Z Anorg Allg Chem 2009. [DOI: 10.1002/zaac.200801265] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ito S, Miura J, Morita N, Yoshifuji M, Arduengo A. Poly(Biradicals): Oligomers of 1,3-Diphosphacyclobutane-2,4-diyl Units. Angew Chem Int Ed Engl 2008; 47:6418-21. [DOI: 10.1002/anie.200801461] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Ito S, Miura J, Morita N, Yoshifuji M, Arduengo A. Poly(Biradicals): Oligomers of 1,3-Diphosphacyclobutane-2,4-diyl Units. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801461] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ito S, Freytag M, Liang H, Nishide K, Yoshifuji M. Design, Synthesis, and Application of Phosphaalkenes to Unique Palladium and Gold Catalysts. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426500701764924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Shigekazu Ito
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
| | - Matthias Freytag
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
| | - Hongze Liang
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
| | - Katsunori Nishide
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
| | - Masaaki Yoshifuji
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
- b Department of Chemistry , The University of Alabama , Tuscaloosa, AL, USA
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Affiliation(s)
- Masaaki Yoshifuji
- a Department of Chemistry , The University of Alabama , Tuscaloosa, AL, USA
| | | | - Shigekazu Ito
- b Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
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Affiliation(s)
- Shigeru Sasaki
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, 980-8578, Japan
| | - Kohji Sasaki
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, 980-8578, Japan
| | - Masaaki Yoshifuji
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, 980-8578, Japan
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Affiliation(s)
- Masaaki Yoshifuji
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai 980–8578, Japan
- b Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai 980–8578, Japan
- c Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai 980–8578, Japan
| | - Shigekazu Ito
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai 980–8578, Japan
- b Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai 980–8578, Japan
- c Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai 980–8578, Japan
| | - Hiroki Sugiyama
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai 980–8578, Japan
- b Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai 980–8578, Japan
- c Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai 980–8578, Japan
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Hayashi K, Nakatani M, Hayashi A, Takano M, Okazaki M, Toyota K, Yoshifuji M, Ozawa F. Synthesis and Structures of Platinum(0) Alkyne Complexes with Extended π-Conjugated Systems. Organometallics 2008. [DOI: 10.1021/om800163p] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kyohei Hayashi
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Mitsuharu Nakatani
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Akito Hayashi
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Masato Takano
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Masaaki Okazaki
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Kozo Toyota
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Masaaki Yoshifuji
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Fumiyuki Ozawa
- International Research Center for Elements Science (IRCELS), Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan, and Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
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Ito S, Miyake H, Sekiguchi S, Freytag M, Yoshifuji M. Chemistry of Fulvene-Type P-Heterocyclic Compounds. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426500701795142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Shigekazu Ito
- a Department of Chemistry , Graduate School of Science, Tohoku University , Aoba, Sendai, Japan
| | - Hideaki Miyake
- a Department of Chemistry , Graduate School of Science, Tohoku University , Aoba, Sendai, Japan
| | - Satoshi Sekiguchi
- a Department of Chemistry , Graduate School of Science, Tohoku University , Aoba, Sendai, Japan
| | - Matthias Freytag
- a Department of Chemistry , Graduate School of Science, Tohoku University , Aoba, Sendai, Japan
| | - Masaaki Yoshifuji
- a Department of Chemistry , Graduate School of Science, Tohoku University , Aoba, Sendai, Japan
- b Department of Chemistry , the University of Alabama , Tuscaloosa, AL, USA
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Sasaki S, Adachi K, Yoshifuji M. Synthesis and Structure of Thiophene, Selenophene, and Related Compounds Carrying Four Phosphoryl Groups. PHOSPHORUS SULFUR 2008. [DOI: 10.1080/10426500701807848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Affiliation(s)
- Shigeru Sasaki
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
| | - Kazutaka Adachi
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
| | - Masaaki Yoshifuji
- a Department of Chemistry, Graduate School of Science , Tohoku University , Aoba, Sendai, Japan
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Ito S, Hashino S, Morita N, Yoshifuji M, Hirose D, Takahashi M, Kawazoe Y. Facile [3+2] dimerization and formal dehydrogenative coupling mode of a cyanophenylphosphaallene. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.07.063] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sasaki S, Kato K, Yoshifuji M. Synthesis and Redox Properties of Crowded Triarylphosphines Carrying a Nitroxide Radical and Related Compounds. BCSJ 2007. [DOI: 10.1246/bcsj.80.1791] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Toyota K, Horikawa K, Jensen RS, Omori K, Kawasaki S, Ito S, Yoshifuji M, Morita N. Improved Preparative Method for 1,2-Diaryl-3,4-diphosphinidenecyclobutenes and Its Application to the Studies of 1,2-Bis(arylthienyl)-3,4-diphosphinidenecyclobutenes. BCSJ 2007. [DOI: 10.1246/bcsj.80.1580] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Ito S, Miyake H, Yoshifuji M. 1,3‐Dipolarophile Character of an Extremely Bulky Phosphaalkyne Mes*C≡P (Mes* = 2,4,6‐
t
Bu
3
C
6
H
2
) Leading to the Formation of 1,2,4‐Diazaphospholes with Unique Hydrogen Bonding Properties. Eur J Inorg Chem 2007. [DOI: 10.1002/ejic.200700180] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shigekazu Ito
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980‐8578, Japan, Fax: +81‐22‐795‐6562
| | - Hideaki Miyake
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980‐8578, Japan, Fax: +81‐22‐795‐6562
| | - Masaaki Yoshifuji
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980‐8578, Japan, Fax: +81‐22‐795‐6562
- Present address: Department of Chemistry, The University of Alabama, Tuscaloosa, Alabama 35487‐0336, USA, Fax: +1‐205‐348‐4704
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Ito S, Kikuchi M, Sugiyama H, Yoshifuji M. Synthesis and properties of air-stable 1,3-diphosphacyclobutane-2,4-diyls and the related compounds. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.10.066] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Sasaki S, Adachi K, Yoshifuji M. Synthesis of Dihydrothiophene, Thiophene, and Their Selenium Analogues Carrying Four Phosphoryl Groups. Org Lett 2007; 9:1729-32. [PMID: 17411059 DOI: 10.1021/ol070414y] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Sodium hydrosulfide undergoes addition to two molecules of bis(diethoxyphosphoryl)acetylene followed by cyclization to give a 2,3-dihydrothiophene carrying four phosphoryl groups. Oxidation of the 2,3-dihydrothiophene with mCPBA gives the corresponding sulfoxide or sulfone depending on the ratio of the reagents, and the sulfoxide is dehydrated to afford a tetraphosphorylthiophene. The corresponding dihydroselenophene and selenophene are also synthesized in a similar manner.
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Affiliation(s)
- Shigeru Sasaki
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba, Sendai 980-8578, Japan.
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Jensen RS, Umeda K, Okazaki M, Ozawa F, Yoshifuji M. Synthesis and catalytic properties of cationic palladium(II) and rhodium(I) complexes bearing diphosphinidinecyclobutene ligands. J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.04.048] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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