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Malik N, De R, Pal SK, Ramasastry SSV. A one-pot telescopic synthesis of benzo[ b]carbazoles and exploration of their liquid crystalline properties. Chem Commun (Camb) 2024; 60:4797-4800. [PMID: 38602366 DOI: 10.1039/d4cc00721b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
We describe a diversity-oriented one-pot telescopic synthesis of various benzo[b]carbazoles with the naphthannulation of indoles as the key step, enabled by an intramolecular furan-olefin Diels-Alder reaction. This strategy is general and efficient across a wide range of substrates. We applied this method to synthesize and characterize the first benzo[b]carbazole-based liquid crystalline materials, where the unique molecular design led to the formation of a rare nematic phase at room temperature.
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Affiliation(s)
- Nirmal Malik
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
| | - Ritobrata De
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
| | - Santanu Kumar Pal
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
| | - S S V Ramasastry
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, S. A. S. Nagar, Punjab 140306, India.
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2
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Gulbrandsen HS, Serigstad H, Lovell Read M, Joos I, Gundersen LL. Formation of 8-Hydroxyphenanthridines by Microwave-Mediated IMDAF Reactions; Synthesis Directed towards Lycorine Alkaloids. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901000] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Halvard Serigstad
- Department of Chemistry; University of Oslo; P. O. Box 1033, Blindern 0315 Oslo Norway
| | - Matthew Lovell Read
- Department of Chemistry; University of Oslo; P. O. Box 1033, Blindern 0315 Oslo Norway
| | - Ilah Joos
- Department of Chemistry; University of Oslo; P. O. Box 1033, Blindern 0315 Oslo Norway
| | - Lise-Lotte Gundersen
- Department of Chemistry; University of Oslo; P. O. Box 1033, Blindern 0315 Oslo Norway
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3
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Lofstrand VA, McIntosh KC, Almehmadi YA, West FG. Strain-Activated Diels-Alder Trapping of 1,2-Cyclohexadienes: Intramolecular Capture by Pendent Furans. Org Lett 2019; 21:6231-6234. [PMID: 31343882 DOI: 10.1021/acs.orglett.9b02085] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Intramolecular [4 + 2] cycloaddition reactions of substituted 1,2-cyclohexadienes with pendent furans enables the synthesis of complex tetracyclic scaffolds in a single step under mild conditions. All Diels-Alder cycloadducts were obtained as single diastereomers, assigned as the endo isomer. Substrates were easily assembled via Stork-Danheiser alkylation of 3-ethoxy-2-bromocyclohex-2-enone to accommodate a range of tethers and furan traps. Cleavage of enol acetate moieties resulted in room-temperature Diels-Alder cycloreversion to tethered furyl cyclohexenones.
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Affiliation(s)
- Verner A Lofstrand
- Department of Chemistry , University of Alberta , 11227 Saskatchewan Drive , Edmonton , Alberta T6G 2G2 , Canada
| | - Kyle C McIntosh
- Department of Chemistry , University of Alberta , 11227 Saskatchewan Drive , Edmonton , Alberta T6G 2G2 , Canada
| | - Yaseen A Almehmadi
- Department of Chemistry , University of Alberta , 11227 Saskatchewan Drive , Edmonton , Alberta T6G 2G2 , Canada
| | - F G West
- Department of Chemistry , University of Alberta , 11227 Saskatchewan Drive , Edmonton , Alberta T6G 2G2 , Canada
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4
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Asako T, Suzuki S, Itami K, Muto K, Yamaguchi J. Synthesis of a Heptaarylisoquinoline: Unusual Disconnection for Constructing Isoquinoline Frameworks. CHEM LETT 2018. [DOI: 10.1246/cl.180429] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Takashi Asako
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Shin Suzuki
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Kenichiro Itami
- Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602, Japan
| | - Kei Muto
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
| | - Junichiro Yamaguchi
- Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan
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5
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Riedel S, Maichle-Mössmer C, Maier ME. Intramolecular Diels-Alder Reactions of Tethered Enoate Substituted Furans Induced by Dialkylaluminum Chloride. J Org Chem 2017; 82:12798-12805. [PMID: 29111737 DOI: 10.1021/acs.joc.7b02117] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Gold(I)-catalyzed cycloisomerization of enynols 11 and 17, obtained by Sonogashira coupling, led to the tethered enoate-substituted furans 14 and 19. While attempts at thermal and several Lewis acid induced intramolecular Diels-Alder reactions remained fruitless, dialkylaluminum chloride led to the formation of hexahydroindene and octahydronaphthalene derivatives 20-23. Their formation can be explained by Lewis acid induced opening of the epoxy bridge with transfer of one alkyl group to the intermediate cycloadduct.
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Affiliation(s)
- Sibylle Riedel
- Institut für Organische Chemie, Eberhard Karls Universität Tübingen , Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Cäcilia Maichle-Mössmer
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen , Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Martin E Maier
- Institut für Organische Chemie, Eberhard Karls Universität Tübingen , Auf der Morgenstelle 18, 72076 Tübingen, Germany
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6
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Zubkov FI, Zaytsev VP, Mertsalov DF, Nikitina EV, Horak YI, Lytvyn RZ, Homza YV, Obushak MD, Dorovatovskii PV, Khrustalev VN, Varlamov AV. Easy construction of furo[2,3-f]isoindole core by the IMDAV reaction between 3-(furyl)allylamines and α,β-unsaturated acid anhydrides. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.03.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Mackay EG, Nörret M, Wong LSM, Louis I, Lawrence AL, Willis AC, Sherburn MS. A Domino Diels–Alder Approach toward the Tetracyclic Nicandrenone Framework. Org Lett 2015; 17:5517-9. [DOI: 10.1021/acs.orglett.5b02412] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emily G. Mackay
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Marck Nörret
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Leon S.-M. Wong
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Ignace Louis
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Andrew L. Lawrence
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Anthony C. Willis
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
| | - Michael S. Sherburn
- Research School of Chemistry, Australian National University, Canberra, ACT 2601, Australia
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Hahn R, Jafari E, Raabe G, Enders D. Organocatalytic Asymmetric Synthesis of Dihydroisoquinolinones via a One-Pot Aza-Henry-Hemiaminalization-Oxidation Sequence. SYNTHESIS-STUTTGART 2015; 47:472-480. [PMID: 26722132 PMCID: PMC4693956 DOI: 10.1055/s-0034-1379398] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
The asymmetric organocatalytic one-pot synthesis of trans-3,4-disubstituted 3,4-dihydroisoquinolin-1(2H)-ones is described. Starting from 2-(nitromethyl)benzaldehydes and various N-protected aldimines, 5 mol% of a quinine-based squaramide organocatalyst was used to synthesize the title compounds as virtually single diastereomers via an aza-Henry-hemiaminalization-oxidation sequence. Moderate to good yields (39-78%) and moderate to very good enantioselectivities (40-95% ee) were reached.
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Affiliation(s)
- Robert Hahn
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Ehsan Jafari
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Gerhard Raabe
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen, Germany
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Gulbrandsen HS, Hennum M, Osheka M, Read ML, Gundersen LL. Synthesis of Phenanthridine Derivatives Functionalized in the C-Ring by Means of IMDAF Reactions under Microwave or Conventional Heating Conditions. European J Org Chem 2014. [DOI: 10.1002/ejoc.201403111] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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10
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Petrone DA, Yoon H, Weinstabl H, Lautens M. Additive Effects in the Palladium-Catalyzed Carboiodination of ChiralN-Allyl Carboxamides. Angew Chem Int Ed Engl 2014; 53:7908-12. [DOI: 10.1002/anie.201404007] [Citation(s) in RCA: 84] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Indexed: 11/10/2022]
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11
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Additive Effects in the Palladium-Catalyzed Carboiodination of ChiralN-Allyl Carboxamides. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201404007] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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12
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Wang C, Kong L, Li Y, Li Y. Palladium-Catalyzed Allenylation/Intramolecular Diels-Alder Reaction of Furans with Propargyl Carboxylates for the Synthesis of Polycyclic Compounds. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402059] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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13
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Uchuskin MG, Molodtsova NV, Lysenko SA, Strel'nikov VN, Trushkov IV, Butin AV. Synthesis of Indoles by Domino Reaction of 2-(Tosylamino)benzyl Alcohols with Furfurylamines: Two Opposite Reactivity Modes of the α-Carbon of the Furan Ring in One Process. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301762] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Li L, Zhao YL, Wang H, Li YJ, Xu X, Liu Q. Base-catalyzed bicyclization of dialkyl glutaconates with cinnamoylacetamides: a synthetic strategy for isoquinolinedione derivatives. Chem Commun (Camb) 2014; 50:6458-60. [DOI: 10.1039/c3cc46931j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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15
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Zou GF, Pan F, Liao WW. Lewis base catalyzed asymmetric substitution/Diels–Alder cascade reaction: a rapid and efficient construction of enantioenriched diverse tricyclic heterocycles. Org Biomol Chem 2013; 11:7080-3. [DOI: 10.1039/c3ob41454j] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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