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Šumanovac T, Alešković M, Šekutor M, Matković M, Baron T, Mlinarić-Majerski K, Bohne C, Basarić N. Photoelimination of nitrogen from adamantane and pentacycloundecane (PCU) diazirines: a spectroscopic study and supramolecular control. Photochem Photobiol Sci 2019; 18:1806-1822. [PMID: 31162518 DOI: 10.1039/c9pp00124g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Photochemical reactivity of pentacycloundecane (PCU) and adamantane diazirines was investigated by preparative irradiation in different solvents, laser flash photolysis (LFP) and quantum chemical computations. In addition, formation of inclusion complexes for diazirines with cucurbit[7]uril, β- and γ-cyclodextrin (β- and γ-CD) was investigated by 1H NMR spectroscopy, isothermal microcalorimetry and circular dichroism spectroscopy, followed by the investigation of photochemical reactivity of the formed complexes. Diazirines undergo efficient photochemical elimination of nitrogen (ΦR > 0.5) and deliver the corresponding singlet carbenes. Singlet carbenes react in intra- and intermolecular reactions and we found a rare singlet carbene pathway in CH3OH involving protonation and formation of a carbocation, detected due to the specific rearrangement of the pentacycloundecane skeleton. Singlet diazirines undergo intersystem crossing and deliver triplet carbenes that react with oxygen to form ketones which were isolated after irradiation. Our main finding is that the formation of diazirine inclusion complexes with β-CD and γ-CD changes the relative ratio of singlet vs. triplet pathways, with singlet carbene products being dominant from the chemistry of the irradiated complexes. Our combined theoretical and experimental studies provide new insights into the supramolecular control of carbene reactivity which has possible applications for the control of product distribution by solvent effects and the choice of constrained media.
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Affiliation(s)
- Tatjana Šumanovac
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Marija Alešković
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Marina Šekutor
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Marija Matković
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Thibaut Baron
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Kata Mlinarić-Majerski
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
| | - Cornelia Bohne
- Department of Chemistry, University of Victoria, Box 1700 STN CSC, Victoria BC, V8W 2Y2 Canada and Centre for Advanced Materials and Related Technologies (CAMTEC), University of Victoria, Box 1700 STN CSC, Victoria BC, V8W 2Y2 Canada
| | - Nikola Basarić
- Department of Organic Chemistry and Biochemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia.
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Tankabekyan NA, Mokhov VM, Popov YV. Alkylation of saturated nitrogen-containing heterocycles with 1-bromo-4-oxoadamantane. RUSS J APPL CHEM+ 2013. [DOI: 10.1134/s1070427213070239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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3
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Decomposition of an oxodiazirine: free versus incarcerated within the cavities of two α-cyclodextrins. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2012.12.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Brinker UH, Bespokoev AA, Reisenauer HP, Schreiner PR. Conformations and Reactions of Bicyclo[3.2.1]oct-6-en-8-ylidene. J Org Chem 2012; 77:3800-7. [DOI: 10.1021/jo3001035] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Udo H. Brinker
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090 Vienna, Austria
- Department of Chemistry, State University of New York at Binghamton, Vestal
Parkway East, Binghamton, New York, New York 13902-6000, United States
| | - Alexander A. Bespokoev
- Institute of Organic Chemistry, University of Vienna, Währinger Straße 38, A-1090 Vienna, Austria
| | - Hans Peter Reisenauer
- Institute of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 58, D-35392
Giessen, Germany
| | - Peter R. Schreiner
- Institute of Organic Chemistry, Justus-Liebig University, Heinrich-Buff-Ring 58, D-35392
Giessen, Germany
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Knoll W, Kaneno D, Bobek MM, Brecker L, Rosenberg MG, Tomoda S, Brinker UH. Intra- and Intermolecular Reaction Selectivities of γ-Substituted Adamantanylidenes. J Org Chem 2012; 77:1340-60. [DOI: 10.1021/jo202132c] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wolfgang Knoll
- Chair of Physical Organic and
Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38,
A-1090 Vienna, Austria
| | - Daisuke Kaneno
- Department
of Life Sciences, Graduate
School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-Ku, Tokyo 153-8902, Japan
| | - Michael M. Bobek
- Chair of Physical Organic and
Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38,
A-1090 Vienna, Austria
| | - Lothar Brecker
- Chair of Physical Organic and
Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38,
A-1090 Vienna, Austria
| | - Murray G. Rosenberg
- Chair of Physical Organic and
Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38,
A-1090 Vienna, Austria
| | - Shuji Tomoda
- Department
of Life Sciences, Graduate
School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-Ku, Tokyo 153-8902, Japan
| | - Udo H. Brinker
- Chair of Physical Organic and
Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38,
A-1090 Vienna, Austria
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6
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Knoll W, Mieusset JL, Arion VB, Brecker L, Brinker UH. 2H-Azirines from a Concerted Addition of Alkylcarbenes to Nitrile Groups. Org Lett 2010; 12:2366-9. [DOI: 10.1021/ol100703r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wolfgang Knoll
- Chair of Physical Organic and Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria, and Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Jean-Luc Mieusset
- Chair of Physical Organic and Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria, and Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Vladimir B. Arion
- Chair of Physical Organic and Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria, and Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Lothar Brecker
- Chair of Physical Organic and Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria, and Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Udo H. Brinker
- Chair of Physical Organic and Structural Chemistry, Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria, and Institute of Inorganic Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
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Wagner G, Knoll W, Bobek MM, Brecker L, van Herwijnen HWG, Brinker UH. Structure−Reactivity Relationships: Reactions of a 5-Substituted Aziadamantane in a Resorcin[4]arene-based Cavitand. Org Lett 2009; 12:332-5. [DOI: 10.1021/ol902667a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Gerald Wagner
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Wolfgang Knoll
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Michael M. Bobek
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | - Lothar Brecker
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
| | | | - Udo H. Brinker
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria
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Adcock W, Trout NA. Diastereofacial selectivity in some 4-substituted (X) 2-adamantyl derivatives: electronicversussteric effects. J PHYS ORG CHEM 2008. [DOI: 10.1002/poc.1287] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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9
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Adcock W, Trout NA. The nature of the electronic factor governing diastereofacial selectivity in remotely substituted (X) 2-adamantyl cations: 5-Xversus4-X substitution. J PHYS ORG CHEM 2007. [DOI: 10.1002/poc.1247] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Mieusset JL, Brinker UH. Foiled Carbenes Revisited: When σ-Stabilization Surpasses π-Stabilization. J Org Chem 2006; 72:263-8. [PMID: 17194108 DOI: 10.1021/jo062074k] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The bicyclic alkenylidenes 9 (bicyclo[3.2.1]oct-2-en-8-ylidene) and 17 (bicyclo[3.3.1]non-2-en-9-ylidene) were claimed to be stabilized foiled carbenes. Our B3LYP and MP2 computations confirm previous experimental data. Moreover, they show that these carbenes are very reactive and rearrange rapidly, mainly through a 1,2-vinyl shift by overcoming a low barrier (1.2 to 5.4 kcal/mol). This is in contrast to the high barriers (up to 30 kcal/mol) predicted for the same type of rearrangements in norborn-2-en-7-ylidene derivatives. In 17 and bicyclo[4.1.1]oct-2-en-7-ylidene (23), the divalent carbon atom is even bent away from the double bond!
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Affiliation(s)
- Jean-Luc Mieusset
- Institut für Organische Chemie, Universität Wien, Währinger Strasse 38, A-1090 Wien, Austria
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11
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Mieusset JL, Brinker UH. Reactions of endo-3-Diazotricyclo[3.2.1.02,4]oct-6-ene, a Potential Precursor for the Generation of a Neutral C8H8 Molecule with a Pyramidally Coordinated Carbon. J Org Chem 2006; 71:6975-82. [PMID: 16930051 DOI: 10.1021/jo061082y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
endo-3-Diazotricyclo[3.2.1.0(2,4)]oct-6-ene (endo-6) has already been prepared in solution. According to B3LYP/6-311+G(d,p) computations, the corresponding carbene endo-7 easily produces the highly strained neutral C8H8 compound 4 comprising a pyramidally tetracoordinated carbon which then rearranges to bridgehead alkene 15 through a cascade of rearrangements. Nonplanar diazocyclopropane structures are predicted for endo- and exo-6. Furthermore, their ring-opened isomers 27 are the first representatives of a new class of non-Kekulé compounds, the diazoallyls.
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Affiliation(s)
- Jean-Luc Mieusset
- Institut für Organische Chemie, Universität Wien, Währinger Strasse 38, A-1090 Vienna, Austria
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12
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Takagi R, Miwa Y, Matsumura S, Ohkata K. One-Pot Synthesis of Adamantane Derivatives by Domino Michael Reactions from Ethyl 2,4-Dioxocyclohexanecarboxylate. J Org Chem 2005; 70:8587-9. [PMID: 16209615 DOI: 10.1021/jo051163e] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Adamantane derivatives were constructed by the one-pot reaction of ethyl 2,4-dioxocyclohexanecarboxylate with 2-phenylethyl 2-(acetoxymethyl)acrylate or 2-(acetoxymethyl)-1-phenyl-2-propen-1-one via domino Michael reactions and a Dieckmann condensation or an aldol-type reaction (four-bond formation). This is the first one-pot construction of adamantane derivatives from cyclohexanone derivatives not involving enamines.
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Affiliation(s)
- Ryukichi Takagi
- Department of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8526, Japan.
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13
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Chu JH, Li WS, Chao I, Chung WS. Face selectivity in the reactions of 2,4-disubstituted adamantanes and their modification by inclusion in β-cyclodextrin solutions. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.07.075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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14
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Ikuta Y, Tomoda S. Origin of Stereochemical Reversal in Meyers-Type Enolate Alkylations. Importance of Intramolecular Li Coordination and Solvent Effects. Org Lett 2004; 6:189-92. [PMID: 14723525 DOI: 10.1021/ol036021q] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] The origin of exclusive exo-stereochemistry in the alkylation of Meyers-type enolate 2 has been studied. It was found that the intramolecular complex with a strong Li...O(ring) interaction (the O-complex) may be responsible as the major enolate species in tetrahydrofuran (THF). The transition state of the O-complex leading to exo-stereochemistry is found to be the most favorable process in THF.
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Affiliation(s)
- Yasuhiro Ikuta
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-ku, Tokyo 153-8902, Japan
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15
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Kaneno D, Tomoda S. Origin of facial diastereoselection. Evidence for negative role of antiperiplanar hyperconjugation effects in the transition state of carbene insertion. Org Lett 2003; 5:2947-9. [PMID: 12889915 DOI: 10.1021/ol035073c] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Quantitative analysis of the transition state (TS) structures of the insertion reactions of 5-X-2-adamantanylidenes (X = H, OH, NH(2), SiMe(3)) into MeOH or cyclohexane revealed that the magnitude of antiperiplanar hyperconjugative stabilization involving the incipient bond effects (the AP effect) decrease at TS, strongly suggesting that the AP effect contributes "net destabilization" of TS (i.e., increase in activation energy), in sharp contrast to the proposals of the Felkin-Anh and the Cieplak models. The equilibrium population between two carbene bridge-flipping proximal-distal conformers was found to be the origin of facial diastereoselection of these carbenes.
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Affiliation(s)
- Daisuke Kaneno
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Komaba, Meguro-Ku, Tokyo 153-8902, Japan
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