1
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Liu S, Zhang K, Meng Y, Xu J, Chen N. Aryne and CO 2-based formal [2 + 2 + 2] annulation to access tetrahydroisoquinoline-fused benzoxazinones. Org Biomol Chem 2023; 21:6892-6897. [PMID: 37581250 DOI: 10.1039/d3ob01147j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
Tetrahydroisoquinoline and its fused polyheterocycles are prevalent structural motifs found in numerous natural products. In this study, we report a highly efficient and convergent synthetic approach for the construction of tetrahydroisoquinoline-fused polyheterocycles through a three-component formal [2 + 2 + 2] annulation process by combining 3,4-dihydroisoquinolines, CO2, and benzynes. Notably, electron-rich 3,4-dihydroisoquinolines and electron-deficient benzynes exhibit greater reactivity in this annulation. Moreover, this method benefits from the convergent synthesis and the utilization of carbon dioxide, providing a valuable strategy for the facile synthesis of tetrahydroisoquinoline-fused polyheterocycles, with potential applications in the discovery and development of novel organic molecules.
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Affiliation(s)
- Shiqi Liu
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Kun Zhang
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Yutong Meng
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Jiaxi Xu
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Ning Chen
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
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2
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Dyachenko MS, Chuchvera YO, Dobrydnev AV, Frolov AI, Ostapchuk EN, Popova MV, Volovenko YM. Synthesis of carbo- and heterofused 5-amino-2H-1,2-thiazine 1,1-dioxides via the CSIC reaction strategy. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132685] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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3
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Sun S, Zhang M, Xu J. Direct synthesis of highly strained bifunctionalized 2 H-thiete 1,1-dioxides. Org Chem Front 2022. [DOI: 10.1039/d2qo00556e] [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
Various bifunctionalized dialkyl 2H-thiete-2,3-dicarboxylate 1,1-dioxides are directly and convergently synthesized from readily available sulfonyl chlorides and dialkyl acetylenedicarboxylates via the pyridine-mediated [2 + 2] annulation.
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Affiliation(s)
- Simin Sun
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Mengyao Zhang
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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4
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Cossío FP, de Cózar A, Sierra MA, Casarrubios L, Muntaner JG, Banik BK, Bandyopadhyay D. Role of imine isomerization in the stereocontrol of the Staudinger reaction between ketenes and imines. RSC Adv 2021; 12:104-117. [PMID: 35424513 PMCID: PMC8978721 DOI: 10.1039/d1ra06114c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Accepted: 12/08/2021] [Indexed: 12/03/2022] Open
Abstract
Computational–experimental analysis has allowed determining that the stereochemistry of the Staudinger reaction between ketenes and imines is strongly associated with the nature of the imine, which affects the two steps of the reaction. The first step, namely the nucleophilic attack of the sp2-hybridized nitrogen atom of the imine on the sp-hybridized carbon atom of the ketene, is affected by the energetically accessible in situ isomerization patterns of the imine. The second step consists of a conrotatory electrocyclization of the zwitterionic intermediate formed in the previous step. This latter pericyclic step depends on the inward/outward torquoelectronic effects generated by the substituents of the imine. The impact of these factors on the stereochemistry of this reaction has been analyzed kinetically by numerical methods. The results of these simulations are compatible with the experimental results and support these conclusions. Experimental and computational studies reveal the importance of isomerization pathways in the Staudinger reaction between ketenes and imines. In the studied cases, the stereochemistry is determined by the pre-cycloaddition isomerization step.![]()
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Affiliation(s)
- Fernando P Cossío
- Kimika Fakultatea, Kimika Organikoa I Saila, Universidad del País Vasco - Euskal Herriko Unibertsitaea P. K. 1071 28018 San Sebastián-Donostia Spain .,Donostia International Physics Centre (DIPC) P.O. Box 1072 20018 San Sebastián-Donostia Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain
| | - Abel de Cózar
- Kimika Fakultatea, Kimika Organikoa I Saila, Universidad del País Vasco - Euskal Herriko Unibertsitaea P. K. 1071 28018 San Sebastián-Donostia Spain .,Donostia International Physics Centre (DIPC) P.O. Box 1072 20018 San Sebastián-Donostia Spain.,Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain.,IKERBASQUE, Basque Foundation for Science 48009 Bilbao Spain
| | - Miguel A Sierra
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain.,Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense 28040 Madrid Spain
| | - Luis Casarrubios
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain.,Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense 28040 Madrid Spain
| | - Jaime G Muntaner
- Centro de Innovación en Química Avanzada (ORFEO-CINQA) Spain.,Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Complutense 28040 Madrid Spain
| | - Bimal K Banik
- Department of Mathematics and Natural Sciences, College of Sciences and Human Studies, Deanship of Research, Prince Mohammad Bin Fahd University Al Khobar Kingdom of Saudi Arabia .,Department of Chemistry, The University of Texas-Pan American 1201 West University Drive Edinburg Texas 78541 USA
| | - Debasish Bandyopadhyay
- Department of Chemistry, The University of Texas-Pan American 1201 West University Drive Edinburg Texas 78541 USA
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5
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Abstract
Various cis-β-phosphinolactams are synthesized stereoselectively for the first time from imines and diazo(aryl)methyl(diaryl)phosphine oxides under microwave irradiation. Diazo(aryl)methyl(diaryl)phosphine oxides first undergo the Wolf rearrangement to generate phosphenes. Imines nucleophilically attack the phosphenes followed by an intramolecular nucleophilic addition via less steric transition states to give final cis-β-phosphinolactams. C-Styrylimines generally give rise to β-phosphinolactams in higher yields than C-arylimines. The stereoselectivity and proposed mechanism are rationalized by DFT theoretical calculation.
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Affiliation(s)
- Xingyang Fu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
| | - Xinyao Li
- Department of Chemistry, College of Science, Shanghai University, Shanghai University, Shanghai 200444, China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People's Republic of China
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6
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Logvinenko IG, Kondratov IS, Dobrydnev AV, Kozytskiy AV, Grygorenko OO. Synthesis and reactions of ω-CF3O-substituted aliphatic sulfonyl chlorides. J Fluor Chem 2021. [DOI: 10.1016/j.jfluchem.2021.109799] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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7
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Synthesis and application of azacycloalk-1-ene-fused oxazol-3-ium salts (microreview). Chem Heterocycl Compd (N Y) 2021. [DOI: 10.1007/s10593-021-02860-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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8
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Luo Y, Xu J. Annulation of Diaryl(aryl)phosphenes and Cyclic Imines to Access Benzo-δ-phospholactams. Org Lett 2020; 22:7780-7785. [DOI: 10.1021/acs.orglett.0c02346] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Yun Luo
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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9
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Abstract
Bridged [3.3.1]-bisaminal structures, namely 6,12-epiminodibenzo[b,f][1,5]diazocines, are herein named McGeachin-type bisaminals. The TsOH-catalyzed chiral synthesis of McGeachin-type bisaminals is first developed by condensation of two molecules of 2-(methylamino)benzaldehyde and one molecule of chiral amines. Two chiral diastereomers are generated simultaneously and are isolated by column chromatography in a total yield of up to 99%. The absolute structure of one stereoisomer was determined by X-ray crystallography.
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Affiliation(s)
- Yang Chen
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Siqi Li
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.,Research Institute of Jilin Petrochemical Company, PetroChina, Jilin, Jilin 132021, China
| | - Shili Hou
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Functional Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, Guangxi 541004, China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
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10
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Luo Y, Fu Z, Fu X, Du C, Xu J. Microwave-assisted periselective annulation of triarylphosphenes with aldehydes and ketones. Org Biomol Chem 2020; 18:9526-9537. [PMID: 33191424 DOI: 10.1039/d0ob02011g] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The reaction of diazo(aryl)methyl(diaryl)phosphine oxides with aldehydes and ketones generates benzo-δ-phosphinolactones in low to good yields with 1,1-diarylalk-1-enes as byproducts under microwave irradiation. Diazo(aryl)methyl(diaryl)phosphine oxides first undergo a Wolff rearrangement to form diaryl(aryl)phosphenes, which further react with aldehydes and ketones to afford benzo-δ-phosphinolactones and β-phosphinolactones. The latter are unstable under heating and fragment into the corresponding 1,1-diarylalk-1-enes and arylphosphine dioxides under reaction conditions. The arylphosphine dioxides become arylphosphonic acids during workup. The periselectivity in the annulation shows that the reaction of diaryl(aryl)phosphenes with most aldehydes and ketones favors phosphene phenyl participation in (4 + 2) annulation over (2 + 2) annulation.
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Affiliation(s)
- Yun Luo
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Zhicheng Fu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Xingyang Fu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Changle Du
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
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11
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Affiliation(s)
- Sudarshan Debnath
- Department of Chemistry; Syamsundar College; 713424 Shyamsundar India
| | - Shovan Mondal
- Department of Chemistry; Syamsundar College; 713424 Shyamsundar India
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12
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Xu W, Fu Z, Yang Z, Zhang L, Xu J. Synthesis of 4-trifluoromethyl-β-sultams via sulfa-Staudinger cycloadditions. PHOSPHORUS SULFUR 2018. [DOI: 10.1080/10426507.2017.1418741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Wei Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
- Department of Physical Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
| | - Zhicheng Fu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
| | - Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
| | - Lidan Zhang
- Department of Physical Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering, Department of Organic Chemistry, Faculty of Science, Beijing University of Chemical Technology, Beijing, P. R. China
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13
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He W, Ding Y, Tu J, Que C, Yang Z, Xu J. Thermal conversion of primary alcohols to disulfidesviaxanthate intermediates: an extension to the Chugaev elimination. Org Biomol Chem 2018; 16:1659-1666. [DOI: 10.1039/c8ob00024g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Heating primaryO-alkylS-difluoro(ethoxycarbonyl)methyl xanthates yields disulfides. This extends to the Chugaev elimination.
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Affiliation(s)
- Wei He
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Yong Ding
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jianzhuo Tu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Chuqiang Que
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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14
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Ortho-Nitro Effect on the Diastereoselective Control in Sulfa-Staudinger and Staudinger Cycloadditions. Molecules 2017; 22:molecules22050784. [PMID: 28498354 PMCID: PMC6154622 DOI: 10.3390/molecules22050784] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 05/08/2017] [Accepted: 05/09/2017] [Indexed: 11/17/2022] Open
Abstract
The ortho-nitro effect was discovered in sulfa-Staudinger cycloadditions of ethoxycarbonylsulfene with linear imines. When an ortho-nitro group is present at the C-aryl substituents of linear imines, the sulfa-Staudinger cycloadditions deliver cis-β-sultams in considerable amounts, together with the predominant trans-β-sultams. In other cases, the above sulfa-Staudinger cycloadditions give rise to trans-β-sultams exclusively. Further mechanistic rationalization discloses that the ortho-nitro effect is attributed to its strong electron-withdrawing inductive effect. Similarly, the ortho-nitro effect also exists in Staudinger cycloadditions of ethoxycarbonyl ketene with the imines. The current research provides further insights into the diastereoselective control in sulfa-Staudinger and Staudinger cycloadditions.
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15
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He W, Zhuang J, Yang Z, Xu J. Sterically controlled diastereoselectivity in thio-Staudinger cycloadditions of alkyl/alkenyl/aryl-substituted thioketenes. Org Biomol Chem 2017. [DOI: 10.1039/c7ob01214d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Diastereoselectivity in [2 + 2] cycloadditions of alkyl/alkenyl/arylthioketenes and imines, named as thio-Staudinger cycloaddition, was rationalized and verified.
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Affiliation(s)
- Wei He
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Junpeng Zhuang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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16
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He W, Zhuang J, Du H, Yang Z, Xu J. Stereochemistry and mechanistic insights in the [2t + 2i + 2i] annulations of thioketenes and imines. Org Biomol Chem 2017; 15:9424-9432. [DOI: 10.1039/c7ob02212c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The mechanism and stereochemistry of [2t + 2i + 2i] annulations between one thioketene molecule and two imine molecules have been studied experimentally and theoretically.
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Affiliation(s)
- Wei He
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Junpeng Zhuang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Hongguang Du
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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17
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Zhou B, Xu J. Tertiary amine-catalyzed and direct synthesis of α-chloroalkanesulfonylhydrazines from azodicarboxylates and sulfonyl chlorides. Org Biomol Chem 2016; 14:4918-26. [DOI: 10.1039/c6ob00648e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
α-Chloroalkanesulfonylhydrazines were synthesized directly and efficiently from alkanesulfonyl chlorides and dialkyl azodicarboxylates under the catalysis of tertiary amines.
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Affiliation(s)
- Bingnan Zhou
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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18
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Huang P, Xu J. Synthesis of 2-oxophosphorindolines via the copper-catalyzed intramolecular aromatic C–H insertion of diazophosphonamidates. RSC Adv 2016. [DOI: 10.1039/c6ra10555f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
2-Ethoxy-2-oxophosphorindolines, benzo-γ-phospholactams, were synthesized efficiently with up to 97% yield through the copper-catalyzed intramolecular aromatic C–H insertion of diazophosphonamidates.
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Affiliation(s)
- Peipei Huang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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19
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Wu Q, Yang Z, Xu J. Temperature-dependent annuloselectivity and stereochemistry in the reactions of methanesulfonyl sulfene with imines. Org Biomol Chem 2016; 14:7258-67. [DOI: 10.1039/c6ob01259k] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The annuloselectivity in the reactions of methanesulfonyl sulfene and imines varies with temperature. At 20 °C, the [2s+ 2i] annulation occurs exclusively, while at −78 °C, the [2s+ 2i+ 2i] annulation ofN-methyl imines takes place specifically.
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Affiliation(s)
- Qiuyue Wu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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20
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Li H, Ma X, Lei M. Substituent effects and chemoselectivity of the intramolecular Buchner reaction of diazoacetamide derivatives catalyzed by the di-Rh(ii)-complex. Dalton Trans 2016; 45:8506-12. [DOI: 10.1039/c6dt00268d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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21
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Yang Z, Xu J. Substituent effect on the diastereoselectivity in the sulfa-Staudinger cycloaddition. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.03.076] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Yang Z, Chen N, Xu J. Substituent-Controlled Annuloselectivity and Stereoselectivity in the Sulfa-Staudinger Cycloadditions. J Org Chem 2015; 80:3611-20. [DOI: 10.1021/acs.joc.5b00312] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zhanhui Yang
- State Key Laboratory of Chemical
Resource Engineering, Department of Organic Chemistry, Faculty of
Science, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Ning Chen
- State Key Laboratory of Chemical
Resource Engineering, Department of Organic Chemistry, Faculty of
Science, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
| | - Jiaxi Xu
- State Key Laboratory of Chemical
Resource Engineering, Department of Organic Chemistry, Faculty of
Science, Beijing University of Chemical Technology, Beijing 100029, People’s Republic of China
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23
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Yang Z, Xu J. Annuloselectivity and stereochemistry in the sulfa-Staudinger cycloadditions of cyclic imines. RSC Adv 2015. [DOI: 10.1039/c5ra15717j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The annuloselectivity and the stereochemistry in the [2s+ 2i+ 2i] annulations in the sulfa-Staudinger cycloadditions of cyclic imines are controlled by the steric hindrance of cyclic imines. A stepwise [4 + 2] annulation mechanism is proposed.
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Affiliation(s)
- Zhanhui Yang
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
| | - Jiaxi Xu
- State Key Laboratory of Chemical Resource Engineering
- Department of Organic Chemistry
- Faculty of Science
- Beijing University of Chemical Technology
- Beijing 100029
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