1
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Affiliation(s)
- Martin Obermeier
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Anna I. Arkhypchuk
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 523, 75120 Uppsala, Sweden
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2
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Miesel D, Korb M, Hildebrandt A, Lang H. Synthesis and crystal structure of an acetylenic ferrocenyl substituted phosphaalkene. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.12.014] [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: 11/28/2022]
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3
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Abstract
The bis-cyaphide complex [{Ru(dppe)2}2{μ-(CC)2C6H4-p}(CP)2] is the first molecule to incorporate two phosphaalkyne ‘CP’ moieties within a through-conjugated scaffold, and demonstrates interesting redox behaviour.
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4
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Ito S, Shinozaki T, Mikami K. Stereoselective Catalytic Synthesis of Alkynylated Phosphaethenes Leading to Activation-Free Gold Catalysis. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701259] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Shigekazu Ito
- Department of Chemical Science and Engineering; School of Materials and Chemical Technology; Tokyo Institute of Technology; 2-12-1-H113 Ookayama 152-8552, Japan Meguro, Tokyo
| | - Tomokazu Shinozaki
- Department of Chemical Science and Engineering; School of Materials and Chemical Technology; Tokyo Institute of Technology; 2-12-1-H113 Ookayama 152-8552, Japan Meguro, Tokyo
| | - Koichi Mikami
- Department of Chemical Science and Engineering; School of Materials and Chemical Technology; Tokyo Institute of Technology; 2-12-1-H113 Ookayama 152-8552, Japan Meguro, Tokyo
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5
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Rawe BW, Brown CM, MacKinnon MR, Patrick BO, Bodwell GJ, Gates DP. A C-Pyrenyl Poly(methylenephosphine): Oxidation “Turns On” Blue Photoluminescence in Solution and the Solid State. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00880] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Benjamin W. Rawe
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Christopher M. Brown
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Marc R. MacKinnon
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador, Canada A1B
3X7
| | - Brian O. Patrick
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
| | - Graham J. Bodwell
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador, Canada A1B
3X7
| | - Derek P. Gates
- Department
of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
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6
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Wang J, Li F, Xie H, Xu M, Zhao X, Liu L, Zhao WX. Silver salts and DBU cooperatively catalyzed domino reaction of propargylic alcohols with trifluoromethyl ketones: direct method to trifluoromethyl-substituted 5-alkylidene-1,3-dioxolane derivatives. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3545] [Citation(s) in RCA: 6] [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: 11/10/2022]
Affiliation(s)
- Jingjing Wang
- College of Chemistry and Chemical Engineering; Shangqiu Normal University; 298 Wenhua Road Shangqiu Henan 476000 China
| | - Feng Li
- College of Chemistry and Chemical Engineering; Shangqiu Normal University; 298 Wenhua Road Shangqiu Henan 476000 China
| | - Huanping Xie
- College of Chemistry and Chemical Engineering; Shangqiu Normal University; 298 Wenhua Road Shangqiu Henan 476000 China
| | - Mengmeng Xu
- College of Chemistry and Chemical Engineering; Shangqiu Normal University; 298 Wenhua Road Shangqiu Henan 476000 China
| | - Xiaobo Zhao
- College of Chemistry and Chemical Engineering; Shangqiu Normal University; 298 Wenhua Road Shangqiu Henan 476000 China
| | - Lantao Liu
- College of Chemistry and Chemical Engineering; Shangqiu Normal University; 298 Wenhua Road Shangqiu Henan 476000 China
| | - Wen-Xian Zhao
- College of Chemistry and Chemical Engineering; Shangqiu Normal University; 298 Wenhua Road Shangqiu Henan 476000 China
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7
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Shameem MA, Esfandiarfard K, Öberg E, Ott S, Orthaber A. Direct, Sequential, and Stereoselective Alkynylation of C,C-Dibromophosphaalkenes. Chemistry 2016; 22:10614-9. [PMID: 27310813 DOI: 10.1002/chem.201601955] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Indexed: 01/07/2023]
Abstract
The first direct alkynylation of C,C-dibromophosphaalkenes by a reaction with sulfonylacetylenes is reported. Alkynylation proceeds selectively in the trans position relative to the P substituent to afford bromoethynylphosphaalkenes. Owing to the absence of transition metals in the procedure, the previously observed conversion of dibromophosphaalkenes into phosphaalkynes through the phosphorus analog of the Fritsch-Buttenberg-Wiechell rearrangement is thus suppressed. The bromoethynylphosphaalkenes can subsequently be converted to C,C-diacetylenic, cross-conjugated phosphaalkenes by following a Sonogashira coupling protocol in good overall yields. By using the newly described method, full control over the stereochemistry at the P=C double bond is achieved. The substrate scope of this reaction is demonstrated for different dibromophosphaalkenes as well as different sulfonylacetylenes.
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Affiliation(s)
- Muhammad A Shameem
- Department of Chemistry - Ångström Laboratories, Molecular Inorganic Chemistry, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Keyhan Esfandiarfard
- Department of Chemistry - Ångström Laboratories, Molecular Inorganic Chemistry, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Elisabet Öberg
- Department of Chemistry - Ångström Laboratories, Molecular Inorganic Chemistry, Uppsala University, Box 523, 75120, Uppsala, Sweden
| | - Sascha Ott
- Department of Chemistry - Ångström Laboratories, Molecular Inorganic Chemistry, Uppsala University, Box 523, 75120, Uppsala, Sweden.
| | - Andreas Orthaber
- Department of Chemistry - Ångström Laboratories, Molecular Inorganic Chemistry, Uppsala University, Box 523, 75120, Uppsala, Sweden.
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8
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Esfandiarfard K, Arkhypchuk AI, Orthaber A, Ott S. Synthesis of the first metal-free phosphanylphosphonate and its use in the “phospha–Wittig–Horner” reaction. Dalton Trans 2016; 45:2201-7. [DOI: 10.1039/c5dt03686k] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The synthesis of the first phophanylphosphonate, Mes*PH–PO(OEt)2 (2-H), in which the P(iii) centre is not coordinated by a metal fragment is reported.
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Affiliation(s)
| | - Anna I. Arkhypchuk
- Department of Chemistry-Ångström Laboratories
- Uppsala University
- Uppsala
- Sweden
| | - Andreas Orthaber
- Department of Chemistry-Ångström Laboratories
- Uppsala University
- Uppsala
- Sweden
| | - Sascha Ott
- Department of Chemistry-Ångström Laboratories
- Uppsala University
- Uppsala
- Sweden
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9
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Melikyan GG, Anker B. Radical Reactions of 1,4-Alkadiynes: Metal Coordination as an Effective Tool for Controlling the Regio- and Stereoselectivity of the C–C Bond Formation. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00480] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gagik G. Melikyan
- Department
of Chemistry and
Biochemistry, California State University Northridge, 18111 Nordhoff
Street, Northridge, California 91330, United States
| | - Bryan Anker
- Department
of Chemistry and
Biochemistry, California State University Northridge, 18111 Nordhoff
Street, Northridge, California 91330, United States
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10
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Abstract
The novel complexes trans-[Ru(dppe)2(C≡CR)(C≡P)] (R = CO2Me, C6H4OMe), the first to incorporate cyaphide as part of a conjugated system, are obtained in facile manner. The electronic structure of these compounds is probed by X-ray, DFT and UV/Vis studies.
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Affiliation(s)
- Nicola Trathen
- Department of Chemistry, University of Sussex, Brighton, UK.
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11
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Wang J, Kong WG, Li F, Liu J, Shen Q, Liu L, Zhao WX. Silver salts and DBU cooperatively catalyzed nucleophilic addition/cyclization of propargylic alcohols with trifluoromethyl ketones. Org Biomol Chem 2015; 13:5399-406. [DOI: 10.1039/c5ob00438a] [Citation(s) in RCA: 14] [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: 01/03/2023]
Abstract
A general and efficient synthesis of trifluoromethyl substituted 5-alkylidene-1,3-dioxolane using a silver salt and DBU cooperatively catalyzed nucleophilic addition/cyclization of propargylic alcohols and trifluoromethyl ketones is described.
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Affiliation(s)
- Jingjing Wang
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- China
| | - Wei-Guang Kong
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- China
| | - Feng Li
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- China
| | - Jie Liu
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- China
| | - Qin Shen
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- China
| | - Lantao Liu
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- China
| | - Wen-Xian Zhao
- College of Chemistry and Chemical Engineering
- Shangqiu Normal University
- Shangqiu
- China
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12
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Kremer A, Bietlot E, Zanelli A, Malicka JM, Armaroli N, Bonifazi D. Versatile Bisethynyl[60]fulleropyrrolidine Scaffolds for Mimicking Artificial Light-Harvesting Photoreaction Centers. Chemistry 2014; 21:1108-17. [DOI: 10.1002/chem.201404372] [Citation(s) in RCA: 8] [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] [Received: 07/12/2014] [Indexed: 11/08/2022]
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13
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Rawe BW, Chun CP, Gates DP. Anionic polymerisation of phosphaalkenes bearing polyaromatic chromophores: phosphine polymers showing “turn-on” emission selectively with peroxide. Chem Sci 2014. [DOI: 10.1039/c4sc02133a] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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14
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Öberg E, Orthaber A, Lescop C, Réau R, Hissler M, Ott S. Phosphorus centers of different hybridization in phosphaalkene-substituted phospholes. Chemistry 2014; 20:8421-32. [PMID: 24890504 PMCID: PMC4506554 DOI: 10.1002/chem.201402406] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [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: 03/27/2014] [Indexed: 11/10/2022]
Abstract
Phosphole-substituted phosphaalkenes (PPAs) of the general formula Mes*P=C(CH(3))-(C(4)H(2)P(Ph))-R 5 a-c (Mes*=2,4,6-tBu(3)Ph; R=2-pyridyl (a), 2-thienyl (b), phenyl (c)) have been prepared from octa-1,7-diyne-substituted phosphaalkenes by utilizing the Fagan-Nugent route. The presence of two differently hybridized phosphorus centers (σ(2) ,λ(3) and σ(3) ,λ(3)) in 5 offers the possibility to selectively tune the HOMO-LUMO gap of the compounds by utilizing the different reactivity of the two phosphorus heteroatoms. Oxidation of 5 a-c by sulfur proceeds exclusively at the σ(3) ,λ(3) -phosphorus atom, thus giving rise to the corresponding thioxophospholes 6 a-c. Similarly, 5 a is selectively coordinated by AuCl at the σ(3),λ(3) -phosphorus atom. Subsequent second AuCl coordination at the σ(2),λ(3) -phosphorus heteroatom results in a dimetallic species that is characterized by a gold-gold interaction that provokes a change in π conjugation. Spectroscopic, electrochemical, and theoretical investigations show that the phosphaalkene and the phosphole both have a sizable impact on the electronic properties of the compounds. The presence of the phosphaalkene unit induces a decrease of the HOMO-LUMO gap relative to reference phosphole-containing π systems that lack a P=C substituent.
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Affiliation(s)
- Elisabet Öberg
- Department of Chemistry, Ångström Laboratories, Uppsala UniversityBox 523, 75120 Uppsala (Sweden), Fax: (+46) 18-471-6844 E-mail:
| | - Andreas Orthaber
- Department of Chemistry, Ångström Laboratories, Uppsala UniversityBox 523, 75120 Uppsala (Sweden), Fax: (+46) 18-471-6844 E-mail:
| | - Christophe Lescop
- Institut des Sciences Chimiques de Rennes, UMR6226, CNRS-Université de Rennes 1Campus de Beaulieu, 35042 Rennes Cedex (France) E-mail:
| | - Régis Réau
- Institut des Sciences Chimiques de Rennes, UMR6226, CNRS-Université de Rennes 1Campus de Beaulieu, 35042 Rennes Cedex (France) E-mail:
| | - Muriel Hissler
- Institut des Sciences Chimiques de Rennes, UMR6226, CNRS-Université de Rennes 1Campus de Beaulieu, 35042 Rennes Cedex (France) E-mail:
| | - Sascha Ott
- Department of Chemistry, Ångström Laboratories, Uppsala UniversityBox 523, 75120 Uppsala (Sweden), Fax: (+46) 18-471-6844 E-mail:
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15
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Qiu Y, Worch JC, Chirdon DN, Kaur A, Maurer AB, Amsterdam S, Collins CR, Pintauer T, Yaron D, Bernhard S, Noonan KJT. Tuning Thiophene with Phosphorus: Synthesis and Electronic Properties of Benzobisthiaphospholes. Chemistry 2014; 20:7746-51. [DOI: 10.1002/chem.201402561] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Indexed: 11/06/2022]
Affiliation(s)
- Yunyan Qiu
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213 (USA)
| | - Joshua C. Worch
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213 (USA)
| | - Danielle N. Chirdon
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213 (USA)
| | - Aman Kaur
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, Pennsylvania, 15282 (USA)
| | - Andrew B. Maurer
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213 (USA)
| | - Samuel Amsterdam
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213 (USA)
| | - Christopher R. Collins
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213 (USA)
| | - Tomislav Pintauer
- Department of Chemistry and Biochemistry, Duquesne University, 600 Forbes Avenue, 308 Mellon Hall, Pittsburgh, Pennsylvania, 15282 (USA)
| | - David Yaron
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213 (USA)
| | - Stefan Bernhard
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213 (USA)
| | - Kevin J. T. Noonan
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania, 15213 (USA)
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16
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Worch JC, Chirdon DN, Maurer AB, Qiu Y, Geib SJ, Bernhard S, Noonan KJT. Synthetic Tuning of Electronic and Photophysical Properties of 2-Aryl-1,3-Benzothiaphospholes. J Org Chem 2013; 78:7462-9. [DOI: 10.1021/jo400947u] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
| | | | | | | | - Steven J. Geib
- Department
of Chemistry, University of Pittsburgh,
219 Parkman Avenue, Pittsburgh,
Pennsylvania, 15260, United States
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17
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Arkhypchuk AI, Svyaschenko YV, Orthaber A, Ott S. Mechanism of the phospha-Wittig-Horner reaction. Angew Chem Int Ed Engl 2013; 52:6484-7. [PMID: 23653134 PMCID: PMC3738942 DOI: 10.1002/anie.201301469] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/03/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Anna I Arkhypchuk
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala, Sweden
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18
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Affiliation(s)
- Elisabet Öberg
- a Department of Chemistry , Ångström Laboratories, Uppsala University, Box 523 , 75120 , Uppsala , Sweden E-mail:
| | - Andreas Orthaber
- a Department of Chemistry , Ångström Laboratories, Uppsala University, Box 523 , 75120 , Uppsala , Sweden E-mail:
| | - Marie-Pierre Santoni
- a Department of Chemistry , Ångström Laboratories, Uppsala University, Box 523 , 75120 , Uppsala , Sweden E-mail:
| | - Fredrick Howard
- a Department of Chemistry , Ångström Laboratories, Uppsala University, Box 523 , 75120 , Uppsala , Sweden E-mail:
| | - Sascha Ott
- a Department of Chemistry , Ångström Laboratories, Uppsala University, Box 523 , 75120 , Uppsala , Sweden E-mail:
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19
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Affiliation(s)
- Anna I. Arkhypchuk
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala (Sweden)
| | - Yurii V. Svyaschenko
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala (Sweden)
| | - Andreas Orthaber
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala (Sweden)
| | - Sascha Ott
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala (Sweden)
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20
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Öberg E, Ott S. Alternative Synthesis of A C,C-Diacetylenic Phosphaalkene. PHOSPHORUS SULFUR 2013. [DOI: 10.1080/10426507.2012.743146] [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)
- Elisabet Öberg
- a Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523 , 75120 , Uppsala , Sweden E-mail:
| | - Sascha Ott
- a Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523 , 75120 , Uppsala , Sweden E-mail:
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21
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Abstract
An alternative synthesis of C-monoacetylenic phosphaalkenes trans-Mes*P=C(Me)(C≡CR) (Mes* = 2, 4, 6-tBu3Ph, R = Ph, SiMe3) from C-bromophosphaalkenes cis-Mes*P=C(Me)Br using standard Sonogashira coupling conditions is described. Crystallographic studies confirm cis-trans isomerization of the P=C double bond during Pd-catalyzed cross coupling, leading exclusively to trans-acetylenic phosphaalkenes. Crystallographic studies of all synthesized compounds reveal the extend of π-conjugation over the acetylene and P=C π-systems.
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Affiliation(s)
- Andreas Orthaber
- Department of Chemistry-Ångström Laboratory, Uppsala University Box 523, SE-751 20, Uppsala, Sweden
| | - Elisabet Öberg
- Department of Chemistry-Ångström Laboratory, Uppsala University Box 523, SE-751 20, Uppsala, Sweden
| | - Reuben T Jane
- Department of Chemistry-Ångström Laboratory, Uppsala University Box 523, SE-751 20, Uppsala, Sweden
| | - Sascha Ott
- Department of Chemistry-Ångström Laboratory, Uppsala University Box 523, SE-751 20, Uppsala, Sweden
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22
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Arkhypchuk AI, Santoni MP, Ott S. Cascade Reactions Forming Highly Substituted, Conjugated Phospholes and 1,2-Oxaphospholes. Angew Chem Int Ed Engl 2012; 51:7776-80. [DOI: 10.1002/anie.201202153] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2012] [Revised: 05/10/2012] [Indexed: 11/10/2022]
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23
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Arkhypchuk AI, Santoni MP, Ott S. Cascade Reactions Forming Highly Substituted, Conjugated Phospholes and 1,2-Oxaphospholes. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202153] [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: 11/08/2022]
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Dugal-Tessier J, Serin SC, Castillo-Contreras EB, Conrad ED, Dake GR, Gates DP. Enantiomerically Pure Phosphaalkene-Oxazolines (PhAk-Ox): Synthesis, Scope and Copolymerization with Styrene. Chemistry 2012; 18:6349-59. [PMID: 22489021 DOI: 10.1002/chem.201103887] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2011] [Revised: 02/08/2011] [Indexed: 11/08/2022]
Affiliation(s)
- Julien Dugal-Tessier
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, V6T 1Z1, Canada
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25
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Affiliation(s)
- Anna I. Arkhypchuk
- Department of Chemistry, Ångström
Laboratories, Uppsala University, Box 523,
75120 Uppsala, Sweden
| | - Marie-Pierre Santoni
- Department of Chemistry, Ångström
Laboratories, Uppsala University, Box 523,
75120 Uppsala, Sweden
| | - Sascha Ott
- Department of Chemistry, Ångström
Laboratories, Uppsala University, Box 523,
75120 Uppsala, Sweden
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26
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Abstract
Bis-TMS protected C,C-diacetylenic phosphaalkene (A(2)PA) 1 (Mes*P=C(C≡CTMS)(2); Mes* = 2,4,6-tBu(3)Ph) has been used as a building block for the construction of butadiyne-expanded dendralene fragments in which phosphaalkenes feature as exotopic double bonds. Treatment of 1 with CuCl gives rise to a Cu(I) acetylide that is selectively formed at the acetylene trans to the Mes* group. The cis-TMS-acetylene engages in similar chemistry, albeit at higher temperatures and longer reaction times. The differentiation between the two acetylene termini of 1 allows for the controlled synthesis of the title compounds by a variety of different Cu- and Pd-catalyzed oxidative acetylene homo- and heterocoupling protocols. Crystallographic characterization of A(2)PA 1 and dimeric Mes*P=C(C≡CR(1))C(4)(R(2) C≡C)C=PMes* (3b, R(1) = R(2) = Ph; 6, R(1) = R(2) = TMS), and 10 (R(1) = R(2) = C≡CPh) verifies that the stereochemistry across the P=C bond is conserved during the coupling reactions, whereas spectroscopic evidence reveals cis/trans isomerization in an iodo-substituted A(2)PA intermediate 4 (Mes*P=C(C≡CTMS)(C≡CI). UV/Vis spectroscopic and electrochemical studies reveal that efficient π conjugation operates through the entire acetylenic phosphaalkene framework, even in the cross-conjugated dimeric structures. The P centers contribute considerably to the frontier molecular orbitals of the compounds, thereby leading to smaller HOMO-LUMO gaps than in all-carbon-based congeners. Phenyl- and/or ethynylphenyl substituents at the A(2)PA framework influence the HOMO and LUMO to a varying degree depending on their relationship to the Mes* group, thus enabling a fine-tuning of the frontier molecular orbitals of the compounds.
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Affiliation(s)
- Xue-Li Geng
- Department of Photochemistry and Molecular Science, Ångström Laboratories, Uppsala University, Regementsvagen 1, Box 523, 75120 Uppsala, Sweden
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27
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Abstract
The reactivity of bis-TMS-substituted C,C-diacetylenic phosphaalkene (A(2)PA) 1 in Sonogashira-Hagihara cross-coupling reactions has been examined. The selective and successive deprotection of the two silyl groups in 1 is enabled by the steric bulk of the Mes* group which renders the acetylene trans to Mes* more reactive and thereby facilitates selective and consecutive couplings with iodoarenes. In situ transformation of the TMS-protected acetylenes into Cu(i)acetylides is the key step in the synthetic sequence and enables the preparation of the first dimeric A(2)PA linked by a phenylene spacer. cis-trans Isomerization across the P[double bond, length as m-dash]C bond is triggered by a tertiary amine and exclusively observed in the case of nitrophenyl-substituted A(2)PAs. The introduced aryl groups are integral parts of the entire π-system as evidenced by spectroscopic and electrochemical studies.
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Affiliation(s)
- Elisabet Oberg
- Department of Photochemistry and Molecular Science, Ångström Laboratories, Uppsala University, Uppsala, Sweden
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28
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Arkhypchuk AI, Ott S. Reductive Diphosphene Formation From W(CO) 5-Coordinated Dichlorophosphanes. PHOSPHORUS SULFUR 2011. [DOI: 10.1080/10426507.2010.525772] [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)
- Anna I. Arkhypchuk
- a Department of Photochemistry and Molecular Science, Ångström Laboratories , Uppsala University , Uppsala , Sweden
| | - Sascha Ott
- a Department of Photochemistry and Molecular Science, Ångström Laboratories , Uppsala University , Uppsala , Sweden
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Washington MP, Payton JL, Simpson MC, Protasiewicz JD. Redox Behavior of 2-Substituted 1,3-Benzoxaphospholes and 2,6-Substituted Benzo[1,2-d:4,5-d′]bisoxaphospholes. Organometallics 2011. [DOI: 10.1021/om200014f] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Marlena P. Washington
- Department of Chemistry, Case Western Reserve University, Cleveland,
Ohio 44106, United States
| | - John L. Payton
- Department of Chemistry, Case Western Reserve University, Cleveland,
Ohio 44106, United States
| | - M. Cather Simpson
- Departments of Chemistry and
Physics and the Photon Factory, University of Auckland, Auckland, New Zealand
| | - John D. Protasiewicz
- Department of Chemistry, Case Western Reserve University, Cleveland,
Ohio 44106, United States
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30
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Fadhel O, Benkö Z, Gras M, Deborde V, Joly D, Lescop C, Nyulászi L, Hissler M, Réau R. 3,4-Dithiaphosphole and 3,3′,4,4′-Tetrathia-1,1′-Biphosphole π-Conjugated Systems: S Makes the Impact. Chemistry 2010; 16:11340-56. [DOI: 10.1002/chem.201001463] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Affiliation(s)
- Xue-Li Geng
- Department of Photochemistry and Molecular Science, Ångström Laboratories, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Qi Hu
- Department of Photochemistry and Molecular Science, Ångström Laboratories, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Bernhard Schäfer
- Department of Photochemistry and Molecular Science, Ångström Laboratories, Uppsala University, Box 523, 75120 Uppsala, Sweden
| | - Sascha Ott
- Department of Photochemistry and Molecular Science, Ångström Laboratories, Uppsala University, Box 523, 75120 Uppsala, Sweden
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32
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Abstract
Many parallels have been drawn between the chemistry of low-valent phosphorus and carbon. This Perspective is intended to highlight some emerging reactivity of phosphaalkenes, that is phospha-analogues of alkenes, in the areas of asymmetric catalysis and polymer science.
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Affiliation(s)
- Joshua I Bates
- Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, British Columbia, Canada V6T 1Z1
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