1
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Qian W, Schreiner PR, Mardyukov A. Preparation and Photochemistry of Parent Triplet Vinylarsinidene. J Am Chem Soc 2024; 146:930-935. [PMID: 38143310 DOI: 10.1021/jacs.3c11432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2023]
Abstract
Vinyl pnictinidenes are an elusive family of molecules that have been suggested as key intermediates in multiple chemical reactions and commonly display a predisposition toward open-shell electronic ground states (as is evident from quantum chemical computations). However, owing to their expected extremely high reactivity, no vinyl pnictinidene has ever been isolated and characterized spectroscopically. Here, we report the synthesis and spectroscopic characterization of vinylarsinidene, a higher congener of vinylnitrene. As we demonstrate, triplet vinylarsinidene can be prepared through the low-temperature photolysis of diazidovinylarsine at 10 K in an argon matrix. The title compound can also be generated through high-vacuum flash pyrolysis of the diazide at 700 °C and trapped analogously. Triplet vinylarsinidene was characterized by IR and UV/vis spectroscopy and displayed remarkably rich unimolecular photochemistry. Upon selective photoirradiation, it rearranges to vinylidenearsine, 2H-arsirene, triplet ethynylarsinidene or an arsinidene (H-As) acetylene complex. The formation mechanisms of these products were rationalized with DFT and CASPT2 computations.
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Affiliation(s)
- Weiyu Qian
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Artur Mardyukov
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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2
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Lu B, Zeng X. Phosphinidenes: Fundamental Properties and Reactivity. Chemistry 2023:e202303283. [PMID: 38108540 DOI: 10.1002/chem.202303283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 12/19/2023]
Abstract
Phosphinidenes are heavy congeners of nitrenes that have been broadly used as in situ reagents in synthetic phosphorus chemistry and also serve as versatile ligands in coordination with transition metals. However, the detection of free phosphinidenes is largely challenged by their high reactivity and also the lack of suitable synthetic methods, rendering the knowledge about the fundamental properties of this class of low-valent phosphorus compounds limited. Recently, an increasing number of free phosphinidenes bearing prototype structural and bonding properties have been prepared for the first time, thus enabling the exploration of their distinct reactivity from the nitrene analogues. This Concept article will discuss the experimental approaches for the generation of the highly unstable phosphinidenes and highlight their distinct reactivity from the nitrogen analogues so as to stimuate future studies about their potential applications in phosphorus chemistry.
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Affiliation(s)
- Bo Lu
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
| | - Xiaoqing Zeng
- Department of Chemistry, Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai, 200433, China
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3
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Ahmed N, Kavikarage JPK, Judkins DF, Mendis WD, Merugu R, Krause JA, Ault BS, Gudmundsdottir AD. Unraveling the Solid-State Photoreactivity of Carbonylbis(4,1-Phenylene)dicarbonazidate with Laser Flash Photolysis. J Phys Chem A 2023; 127:9705-9716. [PMID: 37939705 DOI: 10.1021/acs.jpca.3c04867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
Solid-state photoreactions are generally controlled by the rigid and ordered nature of crystals. Herein, the solution and solid-state photoreactivities of carbonylbis(4,1-phenylene)dicarbonazidate (1) were investigated to elucidate the solid-state reaction mechanism. Irradiation of 1 in methanol yielded primarily the corresponding amine, whereas irradiation in the solid state gave a mixture of photoproducts. Laser flash photolysis in methanol showed the formation of the triplet ketone (TK) of 1 (τ ∼ 99 ns), which decayed to triplet nitrene 31N (τ ∼ 464 ns), as assigned by comparison to its calculated spectrum. Laser flash photolysis of a nanocrystalline suspension and diffuse reflectance laser flash photolysis also revealed the formation of TK of 1 (τ ∼ 106 ns) and 31N (τ ∼ 806 ns). Electron spin resonance spectroscopy and phosphorescence measurements further verified the formation of 31N and the TK of 1, respectively. In methanol, 31N decays by H atom abstraction. However, in the solid state, 31N is sufficiently long lived to thermally populate its singlet configuration (11N). Insertion of 11N into the phenyl ring to produce oxazolone competes with 31N cleavage to form a radical pair. Notably, 1 did not exhibit photodynamic behavior, likely because the photoreaction occurs only on the crystal surfaces.
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Affiliation(s)
- Noha Ahmed
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
| | - Janaka P K Kavikarage
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
| | - DeAnte F Judkins
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
| | - W Dinindu Mendis
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
| | - Rajkumar Merugu
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
| | - Jeanette A Krause
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
| | - Bruce S Ault
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
| | - Anna D Gudmundsdottir
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45221-0172, United States
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4
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Das S, Dutta A. Annulations involving 1-indanones to access fused- and spiro frameworks. RSC Adv 2022; 12:33365-33402. [PMID: 36425193 PMCID: PMC9679735 DOI: 10.1039/d2ra06635a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 11/16/2022] [Indexed: 11/15/2023] Open
Abstract
Indanones are prominent motifs found in number of natural products and pharmaceuticals. Particularly, 1-indanones occupy important niche in chemical landscape due to their easy accessibility and versatile reactivity. In the past few years, significant advancement has been achieved regarding cyclization of 1-indanone core. The present review focuses on recent (2016-2022) annulations involving 1-indanones for the construction of fused- and spirocyclic frameworks. In this context, new strategies for synthesis of various carbocyclic as well as heterocyclic skeletons are demonstrated. Mechanistic aspects of representative reactions are illustrated for better understanding of reaction pathways. A large number of transformations described in this review offer stereoselective formation of desired polycyclic compounds. Importantly, several reactions provide biologically relevant compounds and natural products, such as, plecarpenene/plecarpenone, swinhoeisterol A, cephanolides A-D, diptoindonesin G and atlanticone C.
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Affiliation(s)
- Suven Das
- Department of Chemistry, Rishi Bankim Chandra College for Women Naihati 24-Parganas (N) 743165 India
| | - Arpita Dutta
- Department of Chemistry, Rishi Bankim Chandra Evening College Naihati 24-Parganas (N) 743165 India
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5
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Osisioma O, Patton LJ, Merugu R, Govorov D, Milbrandt MA, Jarus C, Karney WL, Gudmundsdottir AD. Formation of Stilbene Azo-Dimer by Direct Irradiation of p-Azidostilbene. Photochem Photobiol 2022; 99:605-615. [PMID: 35652751 DOI: 10.1111/php.13659] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 05/30/2022] [Indexed: 11/27/2022]
Abstract
Triplet arylnitrenes may provide direct access to aryl azo-dimers, which have broad commercial applicability. Herein, the photolysis of p-azidostilbene (1) in argon-saturated methanol yielded stilbene azo-dimer (2) through the dimerization of triplet p-nitrenostilbene (3 1N). The formation of 3 1N was verified by electron paramagnetic resonance spectroscopy and absorption spectroscopy (λmax ~ 375 nm) in cryogenic 2-methyltetrahydrofuran matrices. At ambient temperature, laser flash photolysis of 1 in methanol formed 3 1N (λmax ~ 370 nm, 2.85 × 107 s-1 ). On shorter timescales, a transient absorption (λmax ~ 390 nm) that decayed with a similar rate constant (3.11 × 107 s-1 ) was assigned to a triplet excited state (T) of 1. Density functional theory calculations yielded three configurations for T of 1, with the unpaired electrons on the azido (TA ) or stilbene moiety (TTw , twisted and TFl , flat). The transient was assigned to TTw based on its calculated spectrum. CASPT2 calculations gave a singlet-triplet energy gap of 16.6 kcal/mol for 1N; thus, intersystem crossing of 1 1N to 3 1N is unlikely at ambient temperature, supporting the formation of 3 1N from T of 1. Thus, sustainable synthetic methods for aryl azo-dimers can be developed using the visible-light irradiation of aryl azides to form triplet arylnitrenes.
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Affiliation(s)
- Onyinye Osisioma
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH, 45221-0172, USA
| | - Leanna J Patton
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH, 45221-0172, USA
| | - Rajkumar Merugu
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH, 45221-0172, USA
| | - Dmitrii Govorov
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH, 45221-0172, USA
| | - Margaret A Milbrandt
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH, 45221-0172, USA
| | - Cassandra Jarus
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH, 45221-0172, USA
| | - William L Karney
- Department of Chemistry, University of San Francisco, 2130 Fulton Street, San Francisco, CA, 94117, USA
| | - Anna D Gudmundsdottir
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH, 45221-0172, USA
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Li J, Liu MK, Li QS, Li ZS. Theoretical study on the photochemistry of furoylazides: Curtius rearrangement and subsequent reactions. Phys Chem Chem Phys 2020; 22:28317-28324. [PMID: 33300534 DOI: 10.1039/d0cp05539e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Organic azides are an efficient source of nitrenes, which serve as vigorous intermediates in many useful organic reactions. In this work, the complete active space self-consistent field (CASSCF) and its second-order perturbation (CASPT2) methods were employed to study the photochemistry of 2-furoylazide 1 and 3-furoylazide 5, including the Curtius rearrangement to two furylisocyanates (3 and 7) and subsequent reactions to the final product cyanoacrolein 9. Our calculations show that the photoinduced Curtius rearrangement of the two furoylazides takes place through similar stepwise mechanisms via two bistable furoylnitrenes 2 and 6. However, the decarbonylation and ring-opening process of 7 to 9 prefers a stepwise mechanism involving the 3-furoylnitrene intermediate 8, while 3 to 9 goes in a concerted asynchronous way without the corresponding 2-furoylnitrene intermediate 4. Importantly, we revealed that several conical intersections play key roles in the photochemistry of furoylazides. Our results are not only consistent and also make clear the experimental observations (X. Zeng, et al., J. Am. Chem. Soc., 2018, 140, 10-13), but additionally provide important information on the chemistry of furoylazides and nitrenes.
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Affiliation(s)
- Jian Li
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 100081, China.
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7
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Gonzalez-Oñate A, Quevedo R. Ninhydrin reaction with phenylethylamine: unavoidable by-products. J CHEM SCI 2020. [DOI: 10.1007/s12039-020-1751-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Banerjee U, Karney WL, Ault BS, Gudmundsdottir AD. Photolysis of 5-Azido-3-Phenylisoxazole at Cryogenic Temperature: Formation and Direct Detection of a Nitrosoalkene. Molecules 2020; 25:molecules25030543. [PMID: 32012736 PMCID: PMC7037410 DOI: 10.3390/molecules25030543] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Revised: 01/24/2020] [Accepted: 01/24/2020] [Indexed: 01/15/2023] Open
Abstract
To enhance the versatility of organic azides in organic synthesis, a better understanding of their photochemistry is required. Herein, the photoreactivity of azidoisoxazole 1 was characterized in cryogenic matrices with IR and UV-Vis absorption spectroscopy. The irradiation (λ = 254 nm) of azidoisoxazole 1 in an argon matrix at 13 K and in glassy 2-methyltetrahydrofuran (mTHF) at 77 K yielded nitrosoalkene 3. Density functional theory (DFT) and complete active space self-consistent field (CASSCF) calculations were used to aid the characterization of nitrosoalkene 3 and to support the proposed mechanism for its formation. It is likely that nitrosoalkene 3 is formed from the singlet excited state of azidoisoxazole 1 via a concerted mechanism or from cleavage of an intermediate singlet nitrene that does not undergo efficient intersystem crossing to its triplet configuration.
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Affiliation(s)
- Upasana Banerjee
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH 45221-0172, USA; (U.B.); (B.S.A.)
| | - William L. Karney
- Department of Chemistry, University of San Francisco, 2130 Fulton Street, San Francisco, CA 94117, USA;
| | - Bruce S. Ault
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH 45221-0172, USA; (U.B.); (B.S.A.)
| | - Anna D. Gudmundsdottir
- Department of Chemistry, University of Cincinnati, PO Box 210172, Cincinnati, OH 45221-0172, USA; (U.B.); (B.S.A.)
- Correspondence:
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9
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Ghorai S, Lin Y, Xia Y, Wink DJ, Lee D. Silver-Catalyzed Annulation of Arynes with Nitriles for Synthesis of Structurally Diverse Quinazolines. Org Lett 2019; 22:626-630. [PMID: 31887054 DOI: 10.1021/acs.orglett.9b04395] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Sourav Ghorai
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Yongjia Lin
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province 325035, P.R. China
| | - Yuanzhi Xia
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou, Zhejiang Province 325035, P.R. China
| | - Donald J. Wink
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Daesung Lee
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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10
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Shields DJ, Sarkar SK, Sriyarathne HDM, Brown JR, Wentrup C, Abe M, Gudmundsdottir AD. Transforming Triplet Vinylnitrene into Triplet Alkylnitrene at Cryogenic Temperatures. Org Lett 2019; 21:7194-7198. [DOI: 10.1021/acs.orglett.9b01950] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Dylan J. Shields
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45220-0172, United States
| | - Sujan K. Sarkar
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45220-0172, United States
| | | | - Jocelyn R. Brown
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45220-0172, United States
| | - Curt Wentrup
- School of Chemistry and Molecular Bioscience, University of Queensland, Brisbane, QLD 4072, Australia
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Anna D. Gudmundsdottir
- Department of Chemistry, University of Cincinnati, Cincinnati, Ohio 45220-0172, United States
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11
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Gatlin DM, Karney WL, Abe M, Ault BS, Gudmundsdottir AD. Formation and Reactivity of Triplet Vinylnitrenes as a Function of Ring Size. J Org Chem 2019; 84:9215-9225. [PMID: 31262179 DOI: 10.1021/acs.joc.9b01191] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The photoreactivity of cyclic vinyl azides 1 (3-azido-2-methyl-cyclopenten-1-one) and 2 (3-azido-2-methyl-2-cyclohexen-1-one), which have five- and six-membered rings, respectively, was characterized at cryogenic temperature with electron paramagnetic resonance (EPR), IR, and UV spectroscopy. EPR spectroscopy revealed that irradiating (λ > 250 nm) vinyl azides 1 and 2 in 2-methyltetrahydrofuran at 10 K resulted in the corresponding triplet vinylnitrenes 31N (D/hc = 0.611 cm-1 and E/hc = 0.011 cm-1) and 32N (D/hc = 0.607 cm-1 and E/hc = 0.006 cm-1), which are thermally stable at cryogenic temperature. Irradiation of vinyl azides 1 (310 nm light-emitting diode at 12 K) and 2 (xenon arc lamp through a 310-350 nm filter at 8 K) in argon matrices showed that in competition with intersystem crossing to form vinylnitrenes 31N and 32N, vinyl azide 1 formed a small amount of ketenimine 3, whereas vinyl azide 2 formed significant amounts of azirine 7 and ketenimine 6. Thus, vinyl azide 1 undergoes intersystem crossing more efficiently than vinyl azide 2. Similarly, vinylnitrene 31N is much more photoreactive than vinylnitrene 32N. Quantum chemical calculations were used to support the mechanisms for forming vinylnitrenes 31N and 32N and their reactivity.
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Affiliation(s)
- DeVonna M Gatlin
- Department of Chemistry , University of Cincinnati , Cincinnati , Ohio 45221 , United States
| | - William L Karney
- Department of Chemistry , University of San Francisco , 2130 Fulton Street , San Francisco , California 94117 , United States
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science , Hiroshima University , Hiroshima 739-8526 , Japan
| | - Bruce S Ault
- Department of Chemistry , University of Cincinnati , Cincinnati , Ohio 45221 , United States
| | - Anna D Gudmundsdottir
- Department of Chemistry , University of Cincinnati , Cincinnati , Ohio 45221 , United States
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12
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Shen MH, Liang XC, Li C, Wu H, Qu HY, Wang FM, Xu HD. Rhodium promoted intramolecular [4 + 2] cycloaddition of 2-azidodiene with alkyne: A transition metal catalysis approach to challenging fused bicyclic vinyl azide. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Zhou B, Yang H, Jin H, Liu Y. I2O5-Mediated 1,5-Cyclization of Aryldiynes with H2O: A Way To Access 3-Acyl-1-indenone Derivatives. J Org Chem 2019; 84:2169-2177. [DOI: 10.1021/acs.joc.8b03151] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Bingwei Zhou
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Huan Yang
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Hongwei Jin
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
| | - Yunkui Liu
- State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, People’s Republic of China
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14
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Osisioma O, Chakraborty M, Ault BS, Gudmundsdottir AD. Wavelength-dependent photochemistry of 2-azidovinylbenzene and 2-phenyl-2H-azirine. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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15
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Wentrup C. Carbenes and Nitrenes: Recent Developments in Fundamental Chemistry. Angew Chem Int Ed Engl 2018; 57:11508-11521. [DOI: 10.1002/anie.201804863] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Curt Wentrup
- School of Chemistry and Molecular BiosciencesThe University of Queensland Brisbane Qld 4072 Australia
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16
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Wentrup C. Carbene und Nitrene: Aktuelle Entwicklungen in der Grundlagenchemie. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804863] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Curt Wentrup
- School of Chemistry and Molecular Biosciences; The University of Queensland; Brisbane Qld 4072 Australien
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17
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Chen P, Sun CH, Wang Y, Xue Y, Chen C, Shen MH, Xu HD. Intramolecular Schmidt Reaction of Vinyl Azides with Cyclic Ketones. Org Lett 2018; 20:1643-1646. [PMID: 29504761 DOI: 10.1021/acs.orglett.8b00395] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cyclic ketones tethered with a vinyl azide group undergo a Schmidt-hydrolysis sequence to give secondary lactams bearing a ketone side chain. Secondary lactams are obtained in a regioselective manner that is not possible in a conventional Schimdt reaction. In addition to the well-documented C-2 nucleophilicity, the N nucleophilicity of vinyl azide disclosed in this work opens a new direction for reaction invention involving vinyl azides.
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Affiliation(s)
- Peng Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Chu-Han Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Yu Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Ying Xue
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Chen Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Mei-Hua Shen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
| | - Hua-Dong Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Pharmaceutical Engineering & Life Science , Changzhou University , Changzhou 213164 , P. R. China
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18
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Abe M, Bégué D, Santos-Silva H, Dargelos A, Wentrup C. Direct Observation of an Imidoylnitrene: Photochemical Formation of PhC(=NMe)−N and Me−N from 1-Methyl-5-phenyltetrazole. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712689] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Manabu Abe
- Department of Chemistry; Graduate School of Science; Hiroshima University; 1-3-1 Kagamiyama, Higashi-Hiroshima Hiroshima 739-8526 Japan
| | - Didier Bégué
- Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux; Université de Pau et des Pays de l'Adour; 64000 Pau France
| | - Hugo Santos-Silva
- Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux; Université de Pau et des Pays de l'Adour; 64000 Pau France
| | - Alain Dargelos
- Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux; Université de Pau et des Pays de l'Adour; 64000 Pau France
| | - Curt Wentrup
- School of Chemistry and Molecular Biosciences; The University of Queensland; Brisbane Queensland 4072 Australia
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19
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Abe M, Bégué D, Santos-Silva H, Dargelos A, Wentrup C. Direct Observation of an Imidoylnitrene: Photochemical Formation of PhC(=NMe)−N and Me−N from 1-Methyl-5-phenyltetrazole. Angew Chem Int Ed Engl 2018; 57:3212-3216. [DOI: 10.1002/anie.201712689] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 01/17/2018] [Indexed: 11/10/2022]
Affiliation(s)
- Manabu Abe
- Department of Chemistry; Graduate School of Science; Hiroshima University; 1-3-1 Kagamiyama, Higashi-Hiroshima Hiroshima 739-8526 Japan
| | - Didier Bégué
- Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux; Université de Pau et des Pays de l'Adour; 64000 Pau France
| | - Hugo Santos-Silva
- Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux; Université de Pau et des Pays de l'Adour; 64000 Pau France
| | - Alain Dargelos
- Institut Pluridisciplinaire de Recherche sur l'Environnement et les Matériaux; Université de Pau et des Pays de l'Adour; 64000 Pau France
| | - Curt Wentrup
- School of Chemistry and Molecular Biosciences; The University of Queensland; Brisbane Queensland 4072 Australia
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20
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Feng R, Lu Y, Deng G, Xu J, Wu Z, Li H, Liu Q, Kadowaki N, Abe M, Zeng X. Magnetically Bistable Nitrenes: Matrix Isolation of Furoylnitrenes in Both Singlet and Triplet States and Triplet 3-Furylnitrene. J Am Chem Soc 2017; 140:10-13. [DOI: 10.1021/jacs.7b08957] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ruijuan Feng
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Yan Lu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Guohai Deng
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Jian Xu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Zhuang Wu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Hongmin Li
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Qian Liu
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
| | - Norito Kadowaki
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Manabu Abe
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Xiaoqing Zeng
- College
of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China
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21
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Bégué D, Santos-Silva H, Dargelos A, Wentrup C. Imidoylnitrenes R′C(═NR)–N, Nitrile Imines, 1H-Diazirines, and Carbodiimides: Interconversions and Rearrangements, Structures, and Energies at DFT and CASPT2 Levels of Theory. J Phys Chem A 2017; 121:8227-8235. [DOI: 10.1021/acs.jpca.7b08445] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Didier Bégué
- Institut
Pluridisciplinaire de Recherche sur l’Environnement et les
Matériaux, Université de Pau et des Pays de l’Adour, 64000 Pau, France
| | - Hugo Santos-Silva
- Institut
Pluridisciplinaire de Recherche sur l’Environnement et les
Matériaux, Université de Pau et des Pays de l’Adour, 64000 Pau, France
| | - Alain Dargelos
- Institut
Pluridisciplinaire de Recherche sur l’Environnement et les
Matériaux, Université de Pau et des Pays de l’Adour, 64000 Pau, France
| | - Curt Wentrup
- School
of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
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22
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Yang D, Yang G, Zhao J, Song N, Zheng R, Wang Y. Solvent controlling excited state proton transfer reaction in quinoline/isoquinoline-pyrazole isomer QP-I: A theoretical study. J PHYS ORG CHEM 2017. [DOI: 10.1002/poc.3729] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Dapeng Yang
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
- Department of Basic Science; Jiaozuo University; Jiaozuo China
| | - Guang Yang
- Department of Basic Science; Jiaozuo University; Jiaozuo China
| | - Jinfeng Zhao
- State Key Laboratory of Molecular Reaction Dynamics, Theoretical and Computational Chemistry, Dalian Institute of Chemical Physics; Chinese Academy of Sciences; Dalian China
| | - Nahong Song
- College of Computer and Information Engineering; Henan University of Economics and Law; Zhengzhou China
| | - Rui Zheng
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
| | - Yusheng Wang
- College of Mathematics and Information Science; North China University of Water Resources and Electric Power; Zhengzhou China
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23
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Affiliation(s)
- Curt Wentrup
- School of Chemistry and Molecular
Biosciences, The University of Queensland, Brisbane, Queensland 4072, Australia
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24
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Weragoda GK, Das A, Sarkar SK, Sriyarathne HDM, Zhang X, Ault BS, Gudmundsdottir AD. Singlet Photoreactivity of 3-Methyl-2-phenyl-2H-azirine. Aust J Chem 2017. [DOI: 10.1071/ch16604] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Irradiation of 3-methyl-2-phenyl-2H-azirine (1) at 254 nm in argon matrices results in ylide 6. Similarly, laser flash photolysis (λ = 266 nm) of azirine 1 in acetonitrile yields ylide 6, which has a transient absorption with λmax at ~340 nm and a lifetime of 14 μs. Density functional theory calculations were preformed to support the characterisation of ylide 6 in solution and argon matrices. Irradiation of azirine 1 above 300 nm has previously been reported (J. Org. Chem. 2014, 79, 653) to yield triplet vinylnitrene in solution and ketenimine in cryogenic argon matrices. Thus, the photochemistry of azirine 1 is dependent on the irradiation wavelength.
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