1
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Liu R, Wang J, Wu H, Quan X, Wang S, Guo J, Wang Y, Li H. Stereocontrol in an intermolecular Schmidt reaction of equilibrating hydroxyalkyl allylic azides. Chem Commun (Camb) 2024; 60:4362-4365. [PMID: 38563154 DOI: 10.1039/d4cc00907j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
A selective intermolecular Schmidt reaction of equilibrating hydroxyalkyl allylic azides is reported to afford N-hydroxyalk-1-en-3-yl lactams in modest to high yields. For prochiral and chiral ketones, modest to high 1,5-diastereoselectivity was achieved, and the mechanistic analysis is supported by DFT calculation.
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Affiliation(s)
- Ruzhang Liu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Juan Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Hao Wu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Xianfeng Quan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Shilin Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Jiandong Guo
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Yang Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
| | - Heting Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.
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2
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Guo L, Zhao W, Gao Y, Wu M, Chen S. Regio- and Stereoselective Iodoamination of Ferrocene-Containing Allenylphosphonates: Synthesis of Multifunctional Tetrasubstituted Allylic Amines and Allylic Azides. J Org Chem 2024; 89:1956-1966. [PMID: 38268404 DOI: 10.1021/acs.joc.3c02686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2024]
Abstract
A general and practical methodology for the regio- and stereoselective synthesis of multifunctional tetrasubstituted allylic amines and azides based on iodoamination of ferrocene-containing allenylphosphonates with anilines and sodium azide is described. A tetrasubstituted olefin moiety, as well as an iodine atom, a phosphonate, and a ferrocene group, are installed to the allylic amine motif simultaneously in moderate to good yields.
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Affiliation(s)
- Le Guo
- Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China
- College of Chemical Engineering, Ordos Institute of Technology, Ordos 017000, People's Republic of China
| | - Wanrong Zhao
- Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China
| | - Yanpeng Gao
- College of Chemical Engineering, Ordos Institute of Technology, Ordos 017000, People's Republic of China
| | - Meimei Wu
- College of Chemical Engineering, Ordos Institute of Technology, Ordos 017000, People's Republic of China
| | - Shufeng Chen
- Department of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, People's Republic of China
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3
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Sarkar S, Singh P, Edin S, Wendt OF, Almqvist F. Synthesis of Three-Dimensional Ring Fused Heterocycles by a Selective [4 + 2] Cycloaddition Between Bicyclic Thiazolo 2-Pyridones and Arynes. J Org Chem 2024; 89:731-739. [PMID: 38093677 PMCID: PMC10777404 DOI: 10.1021/acs.joc.3c01957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 11/15/2023] [Accepted: 11/24/2023] [Indexed: 01/06/2024]
Abstract
A selective [4 + 2] cycloaddition reaction of thiazolo-2-pyridones with arynes has been demonstrated. The developed protocol allows rapid access to highly functionalized, structurally complex thiazolo-fused bridged isoquinolones in high yields, which are susceptible to further late-stage functionalization.
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Affiliation(s)
- Souvik Sarkar
- Department
of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - Pardeep Singh
- Department
of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - Simon Edin
- Centre
for Analysis and Synthesis, Lund University, SE-221 00 Lund, Sweden
| | - Ola F. Wendt
- Centre
for Analysis and Synthesis, Lund University, SE-221 00 Lund, Sweden
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4
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Nicastri KA, Gerstner NC, Schomaker JM. Progress toward the Total Synthesis of Jogyamycin Using a Tandem Ichikawa/Winstein Rearrangement. Org Lett 2023; 25:8279-8283. [PMID: 37997640 PMCID: PMC10789149 DOI: 10.1021/acs.orglett.3c03286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2023]
Abstract
Jogyamycin is a densely functionalized aminocyclopentitol that displays potent antiprotozoal activity. Herein, we report a route toward this natural product that utilizes an unprecedented transformation involving a tandem Ichikawa-Winstein rearrangement to install the C-1/C-2 diamine core. Attempts to further functionalize the C-3/C-4 alkene en route to jogyamycin are also discussed.
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Affiliation(s)
- Kate A Nicastri
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Nels C Gerstner
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Jennifer M Schomaker
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, Wisconsin 53706, United States
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5
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Jia WD, Bai X, Ma QQ, Bian M, Bai CM, Li D, Li LF, Wei CX, Yu LJ. Synthesis, molecular docking studies of formononetin derivatives as potent Bax agonists for anticancer activity. Nat Prod Res 2023:1-15. [PMID: 37921074 DOI: 10.1080/14786419.2023.2269592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 10/03/2023] [Indexed: 11/04/2023]
Abstract
Formononetin as a Bax agonist exhibits anticancer effects. To identify novel Bax agonist, 18 new structurally modified formononetin derivatives were synthesised and their anticancer activities were evaluated in the A549 and Beas-2b cell lines. The results indicated that 7a elicited the most potent inhibitory effect against the A549 cell line, with an IC50 value of 0.87 μM, and no obvious toxicity to Beas-2b cells. These results indicated that 7a was 40-fold and 6.94-fold more efficacious than Formononetin and Doxorubicin, respectively. Additionally, western blot and immunofluorescence assays demonstrated that 7a downregulated the protein expression of Bcl-2 and upregulated the expressions of Bax to promote A549 apoptosis, the obtained results also suggested that 7a had the potential to be developed into a lead compound that can be applied in the prevention and treatment of lung cancer.
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Affiliation(s)
- Wei-Dong Jia
- Inner Mongolia Minzu University, Tongliao, P.R. China
| | - Xue Bai
- Inner Mongolia Minzu University, Tongliao, P.R. China
- College of Public Health, Inner Mongolia Minzu University, Tongliao, China
| | - Qian-Qian Ma
- Inner Mongolia Minzu University, Tongliao, P.R. China
- College of Public Health, Inner Mongolia Minzu University, Tongliao, China
| | - Ming Bian
- Inner Mongolia Minzu University, Tongliao, P.R. China
- College of Public Health, Inner Mongolia Minzu University, Tongliao, China
| | - Chun-Mei Bai
- Inner Mongolia Minzu University, Tongliao, P.R. China
| | - Di Li
- Inner Mongolia Minzu University, Tongliao, P.R. China
| | - Li-Fei Li
- First Clinical Medical of Inner, Mongolia Minzu University, Tongliao, P.R. China
| | - Cheng-Xi Wei
- Inner Mongolia Minzu University, Tongliao, P.R. China
| | - Li-Jun Yu
- Inner Mongolia Minzu University, Tongliao, P.R. China
- College of Public Health, Inner Mongolia Minzu University, Tongliao, China
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6
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Liang Y, Huang H, Huang N, Liao L, Zhao X. Catalytic Enantioselective Construction of Chiral γ-Azido Nitriles through Nitrile Group-Promoted Electrophilic Reaction of Alkenes. Org Lett 2023; 25:6757-6762. [PMID: 37656917 DOI: 10.1021/acs.orglett.3c02650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
An efficient approach for the construction of enantioenriched γ-azido nitriles through the chiral sulfide-catalyzed asymmetric electrophilic thioazidation of allylic nitriles is disclosed. A wide range of electron-deficient and -rich aryl, heterocyclic aryl, and alkyl substituents are suitable on the substrates of allylic nitriles. The regio-, enantio-, and diastereoselectivities of the reactions are excellent. As versatile platform molecules, the obtained chiral γ-azido nitriles can be easily converted into high-value-added chiral molecules that are not easily accessed by other methods. Control experiments revealed that the allylic nitrile group is important for control of the reactivity and enantioselectivity of the reaction leading to a broad substrate scope.
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Affiliation(s)
- Yaoyu Liang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Hongtai Huang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Nan Huang
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Lihao Liao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
| | - Xiaodan Zhao
- Institute of Organic Chemistry & MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong 510006, P. R. China
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7
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Isbel SR, Bugarin A. Synthesis of a New α-Azidomethyl Styrene from Safrole via a Dearomative Rearrangement. MOLBANK 2023; 2023:M1713. [PMID: 37920849 PMCID: PMC10621569 DOI: 10.3390/m1713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023] Open
Abstract
There is a growing interest in developing more efficient synthetic alternatives for the synthesis of nitrogen-containing allylic compounds. This article presents a straightforward two-step protocol to produce 5-(3-azidoprop-1-en-2-yl)benzo[d][1,3]dioxole 4 from the natural product safrole. The method yielded the expected α-azidomethyl styrene 4, in good yield, via a dearomative rearrangement.
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Affiliation(s)
- Stephen R. Isbel
- Department of Chemistry and Physics, Florida Gulf Coast University, 10501 FGCU Boulevard South, Fort Myers, FL 33965, USA
| | - Alejandro Bugarin
- Department of Chemistry and Physics, Florida Gulf Coast University, 10501 FGCU Boulevard South, Fort Myers, FL 33965, USA
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8
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Schlundt née Göderz A, Hemmersbach L, Romanski S, Neudörfl JM, Schmalz HG. Vinylogous Winstein Rearrangement: Unexpected Isomerization of an Azide-Substituted Cyclohexadiene–Fe(CO) 3 Complex. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Lars Hemmersbach
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939 Köln, Germany
| | - Steffen Romanski
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939 Köln, Germany
| | - Jörg-Martin Neudörfl
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939 Köln, Germany
| | - Hans-Günther Schmalz
- Department of Chemistry, University of Cologne, Greinstrasse 4, 50939 Köln, Germany
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9
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Ikonnikova VA, Baranov MS, Mikhaylov AA. Developments in the Synthesis of Hasubanan Alkaloids. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Viktoria A. Ikonnikova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry Russian Academy of Sciences: FBGUN Institut bioorganiceskoj himii im akademikov M M Semakina i U A Ovcinnikova Rossijskoj akademii nauk Group of chemistry of natural products RUSSIAN FEDERATION
| | - Mikhail S. Baranov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry Russian Academy of Sciences: FBGUN Institut bioorganiceskoj himii im akademikov M M Semakina i U A Ovcinnikova Rossijskoj akademii nauk Group of chemistry of heterocyclic compounds RUSSIAN FEDERATION
| | - Andrey A. Mikhaylov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry RAS Laboratory of Bioinformatic Methods of Combinatorial Chemistry and Biology Ulitsa Miklukho-Maklaya, 16/10 117997 Moscow RUSSIAN FEDERATION
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10
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Abegg T, Cossy J, Meyer C. Cascade Cope/Winstein Rearrangements: Synthesis of Azido-Cycloheptadienes from Dialkenylcyclopropanes Possessing a Vinyl Azide. Org Lett 2022; 24:4954-4959. [PMID: 35787030 DOI: 10.1021/acs.orglett.2c01888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
cis-1,2-Dialkenylcyclopropanes incorporating a vinyl azide, generated by Knoevenagel condensations between the corresponding cyclopropanecarbaldehydes and α-azido ketones, undergo cascade Cope and Winstein [3,3]-sigmatropic rearrangements, under mild conditions. The sequence allows access to diversely substituted 1,4-cycloheptadienes armed with a secondary allylic azide with up to three stereocenters.
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Affiliation(s)
- Thomas Abegg
- Molecular, Macromolecular Chemistry, and Materials, ESPCI Paris - PSL, CNRS, 10 rue Vauquelin 75005 Paris, France
| | - Janine Cossy
- Molecular, Macromolecular Chemistry, and Materials, ESPCI Paris - PSL, CNRS, 10 rue Vauquelin 75005 Paris, France
| | - Christophe Meyer
- Molecular, Macromolecular Chemistry, and Materials, ESPCI Paris - PSL, CNRS, 10 rue Vauquelin 75005 Paris, France
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11
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Late‐Stage Dehydroxyazidation of Alcohols Promoted by Trifunctional Hypervalent Azido‐Iodine(III) Reagents. Chemistry 2022; 28:e202200272. [DOI: 10.1002/chem.202200272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Indexed: 11/10/2022]
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12
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Chen Y, Wang J, Wu X, Zhu C. Radical-Mediated Functionalization of Internal Alkenes: Synthesis of Multisubstituted Allylic and Homoallylic Azides. ACS ORGANIC & INORGANIC AU 2022; 2:392-395. [PMID: 36855664 PMCID: PMC9955241 DOI: 10.1021/acsorginorgau.2c00017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Radical-mediated functionalization of alkenes provides a powerful tool for transformation of simple alkenes into numerous value-added products. The precedent radical functionalization of alkenes is mainly restricted to terminal alkenes, while the conversion of internal alkenes generally remains challenging, as the increased steric congestion on alkenes significantly conflicts with the intermolecular addition of radicals. Herein, we describe an efficient photoredox catalytic functionalization of internal trisubstituted alkenes, leading to a plethora of valuable multifunctionalized allylic and homoallylic azides, which are otherwise difficult to obtain. The azide products serve as versatile feedstock for construction of useful heterocycles. Allylic or homoallylic azides are selectively generated in the transformation, regulated by the regioselective deprotonation process. This method also features mild reaction conditions and high product diversity.
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Affiliation(s)
- Yasu Chen
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, P.R.
China
| | - Jie Wang
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, P.R.
China
| | - Xinxin Wu
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, P.R.
China
| | - Chen Zhu
- Key
Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry,
Chemical Engineering and Materials Science, Soochow University, 199 Ren-Ai Road, Suzhou, Jiangsu 215123, P.R.
China,Frontiers
Science Center for Transformative Molecules, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, P.R. China,
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13
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Daher SS, Lee M, Jin X, Teijaro CN, Barnett PR, Freundlich JS, Andrade RB. Alternative approaches utilizing click chemistry to develop next-generation analogs of solithromycin. Eur J Med Chem 2022; 233:114213. [PMID: 35240514 PMCID: PMC9009214 DOI: 10.1016/j.ejmech.2022.114213] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/10/2022] [Accepted: 02/18/2022] [Indexed: 11/03/2022]
Abstract
The marked rise in bacterial drug resistance has created an urgent need for novel antibacterials belonging to new drug classes and ideally possessing new mechanisms of action. The superior biological activity of solithromycin against streptococci and other bacteria causative of community-acquired pneumonia pathogens, compared to telithromycin and other macrolides encouraged us to extensively explore this class of antibiotics. We, thus, present the design and synthesis of a novel series of solithromycin analogs. Three main strategies were pursued in structure-activity relationship studies covering the N-11 side chain and the desosamine motif, which are both chief elements for establishing strong interactions with the bacterial ribosome as the molecular target. Minimal inhibitory concentration assays were determined to assess the in vitro potency of the various analogs in relation to solithromycin. Two analogs exhibited improved activity compared to solithromycin against resistant strains, which can be assessed in further pre-clinical studies.
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Affiliation(s)
- Samer S Daher
- Department of Chemistry, Temple University, Philadelphia, PA, 19122, USA.
| | - Miseon Lee
- Department of Chemistry, Temple University, Philadelphia, PA, 19122, USA
| | - Xiao Jin
- Department of Chemistry, Temple University, Philadelphia, PA, 19122, USA
| | | | - Pamela R Barnett
- Department of Pharmacology, Physiology, Neuroscience, Rutgers University - New Jersey Medical School, Newark, NJ, 07103, USA
| | - Joel S Freundlich
- Department of Pharmacology, Physiology, Neuroscience, Rutgers University - New Jersey Medical School, Newark, NJ, 07103, USA; Department of Medicine, Rutgers University - New Jersey Medical School, Newark, NJ, 07103, USA
| | - Rodrigo B Andrade
- Department of Chemistry, Temple University, Philadelphia, PA, 19122, USA
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14
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Sovera V, Martínez S, Umpiérrez D, Vila MA, Gonzalez D, Seoane G, Veiga N, Carrera I. Synthesis of Azido‐Dienediols by Enzymatic Dioxygenation of Benzylazides: An Experimental and Theoretical Study. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Victoria Sovera
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Sebastián Martínez
- Área Química Inorgánica Departamento Estrella Campos Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Diego Umpiérrez
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - María Agustina Vila
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - David Gonzalez
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Gustavo Seoane
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Nicolás Veiga
- Área Química Inorgánica Departamento Estrella Campos Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
| | - Ignacio Carrera
- Laboratorio de Síntesis Orgánica Departamento de Química Orgánica Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
- Laboratorio de Biocatálisis y Biotransformaciones Departamento de Química Orgánica Departamento de Biociencias Facultad de Química Universidad de la República (UdelaR) Av. Gral. Flores 2124 Montevideo Uruguay
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15
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Bou Zeid S, Eid S, Najjar F, Macé A, Rivilla I, Cossío FP, Dorcet V, Roisnel T, Carreaux F. Microwave‐Assisted 1,3‐Dioxa‐[3,3]‐Sigmatropic Rearrangement of Substituted Allylic Carbamates: Application to the Synthesis of Novel 1,3‐Oxazine‐2,4‐dione Derivatives. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Samar Bou Zeid
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
- Department of Biologychemistry and Biochemistry Laboratoire d'innovation Thérapeutique Lebanese University faculty of Sciences II Fanar Lebanon
| | - Samar Eid
- Department of Biologychemistry and Biochemistry Laboratoire d'innovation Thérapeutique Lebanese University faculty of Sciences II Fanar Lebanon
| | - Fadia Najjar
- Department of Biologychemistry and Biochemistry Laboratoire d'innovation Thérapeutique Lebanese University faculty of Sciences II Fanar Lebanon
| | - Aurélie Macé
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - Ivan Rivilla
- Departamento de Química Orgánica I Centro de Innovación en Química Avanzada (ORFEO-CINQA) Facultad de Química Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
- Ikerbasque Basque Fundation for Science 48009 Bilbao Spain
| | - Fernando P. Cossío
- Departamento de Química Orgánica I Centro de Innovación en Química Avanzada (ORFEO-CINQA) Facultad de Química Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU) and Donostia International Physics Center (DIPC) P° Manuel Lardizabal 3 20018 San Sebastián/Donostia Spain
| | - Vincent Dorcet
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - Thierry Roisnel
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
| | - François Carreaux
- Univ Rennes CNRS ISCR (Institut des Sciences Chimiques de Rennes)-UMR 6226 35000 Rennes France
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16
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El Mahmoudi A, El Masaoudi H, Tachallait H, Talha A, Arshad S, Benhida R, Jaber B, Benaissa M, Bougrin K. Selective silver (I)-catalyzed four-component gram-scale synthesis of novel 1,4-disubstituted 1,2,3-triazole-sulfonamides under heterogeneous catalysis and microwave irradiation in water. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100552] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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17
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Stankevich KS, Lavrinenko AK, Filimonov VD. Intramolecular amination via acid-catalyzed rearrangement of azides: a potent alternative to intermolecular direct electrophilic route. J Mol Model 2021; 27:305. [PMID: 34590180 DOI: 10.1007/s00894-021-04914-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Accepted: 09/10/2021] [Indexed: 11/29/2022]
Abstract
Although acid-catalyzed intramolecular rearrangement of organic azides is an attractive route to amines, its mechanism and synthetic prospective are still debated. Herein, through computational and experimental studies, we demonstrated that azide intramolecular rearrangement could serve as a potent synthetic route to a sought-after amine functionality including preparation of difficult to access and valuable heterocyclic amines. Using quantum chemical calculations at MP2/aug-cc-pVTZ and B3LYP/aug-cc-pVDZ levels, we discovered that this reaction proceeds via a concerted transition state with nitrogen elimination and alkyl/aryl migration occurring at the same time. Two conformers of protonated azides - syn- and anti- - were shown to precede corresponding transition states. It was shown that the reaction follows Curtin-Hammett scenario as the energy gap required for conformer interconversion was substantially lower than activation barrier of either transition state. Intramolecular amination via azide rearrangement was predicted to be a selective process with migratory aptitude increasing in a row alkyl<Ar-EWG<Ar-EDG (EWG - electron withdrawing group; EDG - electron donating group), which was supported by experimental results. We demonstrated experimentally that organic azides can be generated from stilbenes in situ and selectively undergo rearrangement to corresponding amines in a cascade fashion via amino-dealkenylation reaction.
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Affiliation(s)
- Ksenia S Stankevich
- The Kizhner Research Center, National Research Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk, 634050, Russia.,Chemistry and Biochemistry Department, Montana State University, Bozeman, 59717, USA
| | - Anastasia K Lavrinenko
- The Kizhner Research Center, National Research Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk, 634050, Russia.,ChemBio Cluster, ITMO University, 9 Lomonosova Street, Saint Petersburg, 191002, Russia
| | - Victor D Filimonov
- The Kizhner Research Center, National Research Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk, 634050, Russia.
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18
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Liu R, Zhang Y, Xu J. Selective hydroboration of equilibrating allylic azides. Chem Commun (Camb) 2021; 57:8913-8916. [PMID: 35225991 DOI: 10.1039/d1cc02520a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
The iridium(I)-catalyzed hydroboration of equilibrating allylic azides is reported to provide only the anti-Markovnikov product of alk-1-ene isomers in good yields and with good functional group tolerance.
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Affiliation(s)
- Ruzhang Liu
- College of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting Rd, Yangzhou 225002, China.
| | - Yuanyuan Zhang
- College of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting Rd, Yangzhou 225002, China.
| | - Jun Xu
- College of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting Rd, Yangzhou 225002, China.
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19
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Forster D, Guo W, Wang Q, Zhu J. Photoredox Catalytic Three-Component Amidoazidation of 1,3-Dienes. ACS Catal 2021. [DOI: 10.1021/acscatal.1c03545] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Dan Forster
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
| | - Weisi Guo
- College of Chemistry & Molecular Engineering, Qingdao University of Science & Technology, 53 Zhengzhou Road, Qingdao 266042, P. R. China
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH5304, CH-1015 Lausanne, Switzerland
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20
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Çetinkaya Y, Maraş A, Göksu S. Insight into the intramolecular interactions of trans-2-azidocycloalk-3-en-1-ols and trans-2-azidocycloalk-3-en-1-yl acetates: A theoretical study. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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21
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Talha A, Mourhly A, Tachallait H, Driowya M, El Hamidi A, Arshad S, Karrouchi K, Arsalane S, Bougrin K. One-pot four-component tandem synthesis of novel sulfonamide-1, 2, 3-triazoles catalyzed by reusable copper (II)-adsorbed on mesoporous silica under ultrasound irradiation. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132215] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Alexander JR, Kevorkian PV, Topczewski JJ. Intercepting the Banert cascade with nucleophilic fluorine: direct access to α-fluorinated NH-1,2,3-triazoles. Chem Commun (Camb) 2021; 57:5024-5027. [PMID: 33890592 DOI: 10.1039/d1cc01179k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The treatment of propargylic azides with silver(i) fluoride in acetonitrile was found to yield α-fluorinated NH-1,2,3-triazoles via the Banert cascade. The reaction was regioselective and the products result from an initial [3,3] rearrangement. The reaction is demonstrated on >15 examples with yields ranging from 37% to 86%.
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Affiliation(s)
- J R Alexander
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, USA.
| | - P V Kevorkian
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, USA.
| | - J J Topczewski
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, USA.
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23
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Liu EC, Topczewski JJ. Enantioselective Nickel-Catalyzed Alkyne-Azide Cycloaddition by Dynamic Kinetic Resolution. J Am Chem Soc 2021; 143:5308-5313. [PMID: 33798335 PMCID: PMC8130861 DOI: 10.1021/jacs.1c01354] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The triazole heterocycle has been widely adopted as an isostere for the amide bond. Many native amides are α-chiral, being derived from amino acids. This makes α-N-chiral triazoles attractive building blocks. This report describes the first enantioselective triazole synthesis that proceeds via nickel-catalyzed alkyne-azide cycloaddition (NiAAC). This dynamic kinetic resolution is enabled by a spontaneous [3,3]-sigmatropic rearrangement of the allylic azide. The 1,4,5-trisubstituted triazole products, derived from internal alkynes, are complementary to those commonly obtained by the related CuAAC reaction. Initial mechanistic experiments indicate that the NiAAC reaction proceeds through a monometallic Ni complex, which is distinct from the CuAAC manifold.
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Affiliation(s)
- En-Chih Liu
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Joseph J Topczewski
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
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24
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Carlson AS, Petre AM, Topczewski JJ. A cascade reaction of cinnamyl azides with vinyl sulfones directly generates dihydro-pyrrolo-pyrazole heterocycles. Tetrahedron Lett 2021; 67. [PMID: 34054152 DOI: 10.1016/j.tetlet.2021.152860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
This report describes the direct synthesis of dihydro-pyrrolo-pyrazole heterocycles from allylic azides and methyl vinyl sulfone. The product results from a complex cascade reaction that is operationally straightforward, with aromatization being the result of a concomitant elimination step. A variety of azides could participate in this reaction (12 examples) and the isolated yields of the desired product ranged from 51%-72%. Lastly the ethylene sulfone group could be removed by heating the product in pyrrolidine.
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Affiliation(s)
- Angela S Carlson
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, MN 55455, United States
| | - Alexandru M Petre
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, MN 55455, United States
| | - Joseph J Topczewski
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, MN 55455, United States
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25
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Affiliation(s)
- Paramasivam Sivaguru
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
| | - Yongquan Ning
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Northeast Normal University, Changchun 130024, China
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26
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Organic Azides: Versatile Synthons in Transition Metal‐Catalyzed C(
sp
2
)−H Amination/Annulation for N‐Heterocycle Synthesis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001168] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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27
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Thio acid-mediated conversion of azides to amides – Investigation of 2-azidotetrahydobenzimidazoles and derivatives. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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28
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Ding PG, Hu XS, Yu JS, Zhou J. Diastereodivergent Synthesis of α-Chiral Tertiary Azides through Catalytic Asymmetric Michael Addition. Org Lett 2020; 22:8578-8583. [DOI: 10.1021/acs.orglett.0c03178] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pei-Gang Ding
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai 200062, People’s Republic of China
| | - Xiao-Si Hu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai 200062, People’s Republic of China
| | - Jin-Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai 200062, People’s Republic of China
- Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University, Haikou 571158, China
| | - Jian Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, and Shanghai Key Laboratory of Green Chemistry and Chemical Processes, East China Normal University, Shanghai 200062, People’s Republic of China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, People’s Republic of China
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29
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Xiu H, Li T, Song C, Ma Y. Azidative Aromatization of Quinone Methides Under Transition Metal and Solvent Free Conditions. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000900] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Haiping Xiu
- School of Pharmaceutical Science Shandong University Wenhua Road No. 44 250012 Jinan P. R. China
| | - Tingting Li
- Department of Chemistry Shandong University Shanda South Road No. 27 250100 Jinan P. R. China
| | - Chun Song
- School of Pharmaceutical Science Shandong University Wenhua Road No. 44 250012 Jinan P. R. China
- State Key Laboratory of Microbial Technology Binhai Road No. 72 266237 Qingdao P. R. China
| | - Yudao Ma
- Department of Chemistry Shandong University Shanda South Road No. 27 250100 Jinan P. R. China
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30
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Liu R, Wei Z, Wang J, Liu Y, Xue H. Highly selective hydrosilylation of equilibrating allylic azides. Chem Commun (Camb) 2020; 56:5038-5041. [PMID: 32242569 DOI: 10.1039/d0cc01316a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The Pt-catalyzed hydrosilylation of equilibrating allylic azides is reported. The reaction provides only one out of four possible hydrosilylation products in good yields and with very high chemoselectivity (alk-1-ene vs. alk-2-ene), regioselectivity (linear vs. branched), and excellent functional group tolerance.
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Affiliation(s)
- Ruzhang Liu
- College of Chemistry & Chemical Engineering, Yangzhou University, 180 Siwangting Rd., Yangzhou 225002, China.
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31
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Massolo E, Pirola M, Benaglia M. Amide Bond Formation Strategies: Latest Advances on a Dateless Transformation. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000080] [Citation(s) in RCA: 77] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Elisabetta Massolo
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Margherita Pirola
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
| | - Maurizio Benaglia
- Dipartimento di Chimica; Università degli Studi di Milano; Via Golgi 19 20133 Milano Italy
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32
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Carlson AS, Liu EC, Topczewski JJ. A Cascade Reaction of Cinnamyl Azides with Acrylates Directly Generates Tetrahydro-Pyrrolo-Pyrazole Heterocycles. J Org Chem 2020; 85:6044-6059. [PMID: 32281795 DOI: 10.1021/acs.joc.0c00535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Developing reactions to generate complex and modular building blocks in a concise and direct fashion remains a contemporary synthetic challenge. This work describes a stereoselective cascade reaction between allylic azides and acrylates that directly generates tetrahydro-pyrrolo-pyrazole ring systems. These products contain up to four contiguous stereocenters, two of which may be tetrasubstituted carbon atoms attached to a nitrogen atom. Over 30 examples are provided with an average isolated yield of 71% (ranging from 40% to 94%). The reaction was easily scaled to use more than one gram of starting material, and the products can be readily diversified.
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Affiliation(s)
- Angela S Carlson
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
| | - En-Chih Liu
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Joseph J Topczewski
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
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33
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Algarra M, Soto J. Insights into the Thermal and Photochemical Reaction Mechanisms of Azidoacetonitrile. Spectroscopic and MS‐CASPT2 Calculations. Chemphyschem 2020; 21:1126-1133. [DOI: 10.1002/cphc.202000201] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/09/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Manuel Algarra
- CQM-Centro de Química da MadeiraUniversidade da Madeira, Campus da Penteada 9020-105 Funchal Portugal
| | - Juan Soto
- Department of Physical Chemistry, Faculty of ScienceUniversity of Málaga, Campus de Teatinos 29071 Málaga Spain
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34
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Tjeng AA, Handore KL, Batey RA. Stereocontrolled Microwave-Assisted Domino [3,3]-Sigmatropic Reactions: A Winstein-Overman Rearrangement for the Formation of Differentiated Contiguous C-N Bonds. Org Lett 2020; 22:3050-3055. [PMID: 32223252 DOI: 10.1021/acs.orglett.0c00801] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A domino [3,3]-sigmatropic rearrangement sequence employing a sequential reversible allylic azide rearrangement followed by an irreversible Overman reaction provides a new route to the formation of two contiguous C-N bonds. The reaction occurs in a stereocontrolled fashion in two steps from readily available alkenyl epoxides via initial azide anion ring opening of the epoxides.
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Affiliation(s)
- Andy A Tjeng
- Davenport Research Laboratories, Dept. of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Kishor L Handore
- Davenport Research Laboratories, Dept. of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Robert A Batey
- Davenport Research Laboratories, Dept. of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
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35
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Ding PG, Zhou F, Wang X, Zhao QH, Yu JS, Zhou J. H-bond donor-directed switching of diastereoselectivity in the Michael addition of α-azido ketones to nitroolefins. Chem Sci 2020; 11:3852-3861. [PMID: 34122853 PMCID: PMC8152593 DOI: 10.1039/d0sc00475h] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The development of catalyst-controlled stereodivergent asymmetric catalysis is important for providing facile access to all stereoisomers of chiral products with multiple stereocenters from the same starting materials. Despite progress, new design strategies for diastereodivergent asymmetric catalysis are still highly desirable. Here we report the potency of H-bond donors as the governing factor to tune diastereoselectivity in a highly diastereoselective switchable enantioselective Michael addition of α-azido ketones to nitroolefins. While a newly developed bifunctional tertiary amine, phosphoramide, preferentially afforded syn-adducts, an analogous squaramide catalyst selectively gave anti-adducts. The resulting multifunctional tertiary azides can be converted to spiro-pyrrolidines with four continuous stereocenters in a one-pot operation. Mechanistic studies cast light on the control of diastereoselectivity by H-bond donors. While the squaramide-catalyzed reaction proceeded with a transition state with both squaramide N–H bonds binding to an enolate intermediate, an unprecedented model was proposed for the phosphoramide-mediated reaction wherein an amide N–H bond and an alkylammonium ion formed in situ interact with nitroolefins, with the enolate stabilized by nonclassical C–H⋯O hydrogen-bonding interactions. We report the successful reversal of the diastereoselectivity in an unprecedented Michael addition of α-azido ketones to nitroolefins catalyzed by bifunctional tertiary amines, simply by varying the H-bond donor from phosphoramide to squaramide.![]()
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Affiliation(s)
- Pei-Gang Ding
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Feng Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Xin Wang
- College of Chemistry, Sichuan University Chengdu Sichuan 610064 China
| | - Qiu-Hua Zhao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University 3663N Zhongshan Road Shanghai 200062 China
| | - Jin-Sheng Yu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University 3663N Zhongshan Road Shanghai 200062 China.,Key Laboratory of Tropical Medicinal Resource Chemistry of Ministry of Education, Hainan Normal University Haikou 571158 China
| | - Jian Zhou
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University 3663N Zhongshan Road Shanghai 200062 China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 China
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36
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Alexander JR, Packard MH, Hildebrandt AM, Ott AA, Topczewski JJ. Divergent Mechanisms of the Banert Cascade with Propargyl Azides. J Org Chem 2020; 85:3174-3181. [PMID: 31944764 DOI: 10.1021/acs.joc.9b03061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Triazoles are privileged heterocycles for a variety of applications. The synthesis of 1H-triazoles can be accomplished by the Banert cascade from propargylic azides. Depending on the substrate and conditions, the Banert cascade can proceed by either a sigmatropic or prototropic mechanism. This report describes the first detailed kinetic analysis of the Banert cascade proceeding by both pathways including substituent effects and KIE. The analysis identified the inflection point in the divergent pathways, allowing future work to predict which Banert products are accessible.
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Affiliation(s)
- Juliana R Alexander
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Mary H Packard
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Alanna M Hildebrandt
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Amy A Ott
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
| | - Joseph J Topczewski
- Department of Chemistry, University of Minnesota Twin Cities, Minneapolis, Minnesota 55455, United States
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37
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1,2-Azide Migration Enables Synthesis of β-Difluoroalkyl Azides. Chem 2020. [DOI: 10.1016/j.chempr.2020.01.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Wang C, Zhu RY, Liao K, Zhou F, Zhou J. Enantioselective Cu(I)-Catalyzed Cycloaddition of Prochiral Diazides with Terminal or 1-Iodoalkynes. Org Lett 2020; 22:1270-1274. [PMID: 31999130 DOI: 10.1021/acs.orglett.9b04522] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report an unprecedented highly enantioselective desymmetric Cu(I)-catalyzed 1,3-dipolar cycloaddition of diazides with terminal alkynes and 1-iodoalkynes, affording tertiary alcohols bearing a 1,2,3-triazole moiety in high yield and excellent ee value. PYBOX ligands with a C4 shielding group once again show the promising ability to achieve higher enantioselectivity.
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Affiliation(s)
| | | | | | | | - Jian Zhou
- State Key Laboratory of Organometallic Chemistry , Shanghai Institute of Organic Chemistry , Shanghai 200032 , China
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39
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Vallejos MM, Labadie GR. Insight into the factors controlling the equilibrium of allylic azides. RSC Adv 2020; 10:4404-4413. [PMID: 35495248 PMCID: PMC9049130 DOI: 10.1039/c9ra10093h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 12/26/2019] [Indexed: 12/19/2022] Open
Abstract
Several allylic azides with different double bond substitutions were studied to understand the factors, governing their equilibrium using density functional theory along with the quantum theory of atoms in molecules, non-covalent interactions and natural bond orbital approaches. The results showed that the hydroxyl group or heteroatoms in allylic azides interact with the molecule through an electrostatic weak interaction in each pair of regioisomers. The equilibrium shifts of substituted allylic azides, compared to non-substituted allylic azides, were not attributed to the presence of specific interactions, such as hydrogen bonds. The observed equilibrium shifts stemmed mainly from the strengthening and weakening of negative hyperconjugative interactions, which were affected by the weak interaction involving the proximal substituent in each regioisomer. A good linear correlation was obtained between the hyperconjugative energies of πC
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C→σ*Zb interactions and the calculated percentages of the secondary azide and tertiary azide in the equilibrium mixture. Also, the effect of the aromatic ring substituent was analysed using such approaches. This study not only provides insights into the factors controlling the stabilities of the substituted allylic azides, but also settles the basis to predict the regioisomer predominance in the equilibrium mixture. The factors controlling the allyl azides equilibrium has been studied by different theoretical approaches setting the basis to predict the regioisomers predominance in the equilibrium mixture.![]()
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Affiliation(s)
- Margarita M Vallejos
- Laboratorio de Química Orgánica, IQUIBA-NEA, Universidad Nacional del Nordeste, CONICET, FACENA Av. Libertad 5460 Corrientes 3400 Argentina +54-379-4457996 ext. 104
| | - Guillermo R Labadie
- Instituto de Química Rosario, UNR, CONICET Suipacha 531 S2002LRK Rosario Argentina.,Departamento de Química Orgánica, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 S2002LRK Rosario Argentina
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40
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Xiong N, Zhang G, Sun X, Zeng R. Metal‐Metal Cooperation in Dinucleating Complexes Involving Late Transition Metals Directed towards Organic Catalysis. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900371] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ni Xiong
- Department of ChemistrySchool of Science, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Guoxiang Zhang
- Department of ChemistrySchool of Science, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Xiaolong Sun
- The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and TechnologyXi'an Jiaotong University Xi'an Shaanxi 710049 China
| | - Rong Zeng
- Department of ChemistrySchool of Science, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Xi'an Jiaotong University Xi'an Shaanxi 710049 China
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Cruz LM, Moore RY, Gutierrez MT, Herath AK, Lovely CJ, Yousufuddin M. Crystal structures of 4-{( E)-3-[(imino-λ 5-aza-nyl-idene)amino]-prop-1-en-yl}- N, N-di-methyl-imidazole-1-sulfonamide and 2-[(imino-λ 5-aza-nyl-idene)amino]-4-{( E)-3-[(imino-λ 5-aza-nyl-idene)amino]-prop-1-en-yl}- N, N-di-methyl-imidazole-1-sulfonamide. Acta Crystallogr E Crystallogr Commun 2019; 75:695-699. [PMID: 31110813 PMCID: PMC6505610 DOI: 10.1107/s205698901900519x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 04/15/2019] [Indexed: 11/27/2022]
Abstract
The structures of two azide containing imidazole derivatives are reported. Allylic azides are fairly reactive making them attractive starting compounds to convert into amides. The first, C8H12N6O2S, contains one azide group with an Nα-Nβ distance of 1.229 (2) Å and an Nβ-Nγ distance of 1.128 (2) Å. The second, C8H11N9O2S, contains two azide groups with an average Nα-Nβ distance of 1.249 (2) Å and an average Nβ-Nγ distance of 1.132 (2) Å. Each compound contains a bulky protecting group (di-methyl-amino-sulfon-yl) which can be easily removed under mildly acidic conditions.
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Affiliation(s)
- Lorenzo M. Cruz
- Life and Health Sciences Department, University of North Texas at Dallas, 7400 University Hills Blvd, Dallas, TX 75241, USA
| | - Raakiyah Y. Moore
- Life and Health Sciences Department, University of North Texas at Dallas, 7400 University Hills Blvd, Dallas, TX 75241, USA
| | - Marcela Torres Gutierrez
- Life and Health Sciences Department, University of North Texas at Dallas, 7400 University Hills Blvd, Dallas, TX 75241, USA
| | - Apsara K. Herath
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 700 Planetarium Pl., Arlington, TX 76019, USA
| | - Carl J. Lovely
- Department of Chemistry and Biochemistry, University of Texas at Arlington, 700 Planetarium Pl., Arlington, TX 76019, USA
| | - Muhammed Yousufuddin
- Life and Health Sciences Department, University of North Texas at Dallas, 7400 University Hills Blvd, Dallas, TX 75241, USA
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