51
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Zheng N, Chang YY, Zhang LJ, Gong JX, Yang Z. Gold-Catalyzed Intramolecular Tandem Cyclization of Indole-Ynamides: Diastereoselective Synthesis of Spirocyclic Pyrrolidinoindolines. Chem Asian J 2015; 11:371-5. [DOI: 10.1002/asia.201500865] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Indexed: 11/11/2022]
Affiliation(s)
- Nan Zheng
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
| | - Yuan-Yuan Chang
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
| | - Li-Jie Zhang
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
| | - Jian-Xian Gong
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
| | - Zhen Yang
- Laboratory of Chemical Genomics; School of Chemical Biology and Biotechnology; Peking University; Shenzhen Graduate School; Shenzhen 518055 China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and; Beijing National Laboratory for Molecular Science (BNLMS); Peking- Tsinghua Center for Life Sciences; Peking University; Beijing 100871 China
- Key Laboratory of Marine Drugs; Chinese Ministry of Education; School of Medicine and Pharmacy; Ocean University of China; 5 Yushan Road Qingdao 266003 China
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52
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Scarpi D, Begliomini S, Prandi C, Oppedisano A, Deagostino A, Gómez-Bengoa E, Fiser B, Occhiato EG. Gold-Catalysed Synthesis of Exocyclic Vinylogous Amides and β-Amino Ketones: A Detailed Study on the 5-exo/6-endo-digSelectivity, Methodology and Scope. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500205] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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53
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Tokimizu Y, Wieteck M, Rudolph M, Oishi S, Fujii N, Hashmi ASK, Ohno H. Dual Gold Catalysis: A Novel Synthesis of Bicyclic and Tricyclic Pyrroles from N-Propargyl Ynamides. Org Lett 2015; 17:604-7. [DOI: 10.1021/ol503623m] [Citation(s) in RCA: 119] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yusuke Tokimizu
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Marcel Wieteck
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Matthias Rudolph
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
| | - Shinya Oishi
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - Nobutaka Fujii
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
| | - A. Stephen K. Hashmi
- Organisch-Chemisches
Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer
Feld 270, 69120 Heidelberg, Germany
- Chemistry
Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hiroaki Ohno
- Graduate
School of Pharmaceutical Sciences, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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54
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Doni E, Zhou S, Murphy JA. Electron transfer-induced coupling of haloarenes to styrenes and 1,1-diphenylethenes triggered by diketopiperazines and Potassium tert-butoxide. Molecules 2015; 20:1755-74. [PMID: 25621421 PMCID: PMC6272703 DOI: 10.3390/molecules20021755] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 01/06/2015] [Indexed: 01/26/2023] Open
Abstract
The coupling of haloarenes to styrenes and 1,1-diarylethenes has been achieved with potassium tert-butoxide in the presence of N,N'-dialkyldiketopiperazines. In contrast to previously reported reactions where phenanthroline has been used to mediate the reactions, the use of diketopiperazines can lead to either 1,1,2-triarylethenes or 1,1,2-triarylethanes, depending on the conditions used.
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Affiliation(s)
- Eswararao Doni
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - Shengze Zhou
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
| | - John A Murphy
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow G1 1XL, UK.
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55
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Chen X, Shen D, Wang Q, Yang Y, Yu B. ortho-(Methyltosylaminoethynyl)benzyl glycosides as new glycosyl donors for latent-active glycosylation. Chem Commun (Camb) 2015; 51:13957-60. [DOI: 10.1039/c5cc05651a] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A new glycosylation protocol with ortho-(methyltosylaminoethynyl)benzyl glycosides as donors is disclosed.
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Affiliation(s)
- Xiaoping Chen
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Dacheng Shen
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - Qiaoling Wang
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
| | - You Yang
- Shanghai Key Laboratory of New Drug Design
- School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Biao Yu
- State Key Laboratory of Bio-organic and Natural Products Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- China
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56
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Liu J, Chen M, Zhang L, Liu Y. Gold(I)-catalyzed 1,2-acyloxy migration/[3+2] cycloaddition of 1,6-diynes with an ynamide propargyl ester moiety: highly efficient synthesis of functionalized cyclopenta[b]indoles. Chemistry 2014; 21:1009-13. [PMID: 25470468 DOI: 10.1002/chem.201405965] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Indexed: 11/09/2022]
Abstract
A gold-catalyzed cycloisomerization of 1,6-diynes containing an ynamide propargyl ester or carbonate moiety has been developed that provides an attractive route to a diverse-substituted 3-acyloxy-1,4-dihydrocyclopenta[b]indoles. Mechanistic studies indicate that the reaction likely proceeds through a competitive 1,2-OAc migration followed by [3+2] cycloaddition of the vinyl gold-carbenoid intermediate with the pendant triple bond. The synthetic utility of the obtained cyclopenta[b]indole products was demonstrated by their efficient transformations by deprotection or double-bond isomerization reactions.
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Affiliation(s)
- Jun Liu
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032 (P. R. China)
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57
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Okitsu T, Nakata K, Nishigaki K, Michioka N, Karatani M, Wada A. Iodocyclization of Ethoxyethyl Ethers to Ynamides: An Immediate Construction to Benzo[b]furans. J Org Chem 2014; 79:5914-20. [DOI: 10.1021/jo500903y] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Takashi Okitsu
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Kohei Nakata
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Kenji Nishigaki
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Naoyuki Michioka
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Mitsuaki Karatani
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
| | - Akimori Wada
- Department of Organic Chemistry
for Life Science, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada-ku, Kobe 658-8558, Japan
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58
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Adcock HV, Langer T, Davies PW. 1,2-N-migration in a gold-catalysed synthesis of functionalised indenes by the 1,1-carboalkoxylation of ynamides. Chemistry 2014; 20:7262-6. [PMID: 24828030 PMCID: PMC4204129 DOI: 10.1002/chem.201403040] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Indexed: 12/02/2022]
Abstract
Unique α-hemiaminal ether gold carbene intermediates were accessed by a gold-catalysed 1,1-carboalkoxylation strategy and evolved through a highly selective 1,2-N-migration. This skeletal rearrangement gave functionalised indenes, and isotopic labelling confirmed the rare C–N bond cleavage of the ynamide moiety. The effect of substituents on the migration has been explored, and a model is proposed to rationalise the observed selectivity.
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Affiliation(s)
- Holly V Adcock
- School of Chemistry, University of Birmingham (UK), Fax: (+44) 121-4144403
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59
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Sun N, Xie X, Liu Y. Gold-Catalyzed Cascade Reactions of Furan-ynes with External Nucleophiles Consisting of a 1,2-Rearrangement: Straightforward Synthesis of Multi-Substituted Benzo[b]furans. Chemistry 2014; 20:7514-9. [DOI: 10.1002/chem.201400112] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 03/18/2014] [Indexed: 11/05/2022]
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60
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Hirner JJ, Faizi DJ, Blum SA. Alkoxyboration: ring-closing addition of B-O σ bonds across alkynes. J Am Chem Soc 2014; 136:4740-5. [PMID: 24588331 PMCID: PMC3986241 DOI: 10.1021/ja500463p] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Abstract
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For nearly 70 years, the addition
of boron–X σ bonds
to carbon–carbon multiple bonds has been employed in the preparation
of organoboron reagents. However, the significantly higher strength
of boron–oxygen bonds has thus far precluded their activation
for addition, preventing a direct route to access a potentially valuable
class of oxygen-containing organoboron reagents for divergent synthesis.
We herein report the realization of an alkoxyboration reaction, the
addition of boron–oxygen σ bonds to alkynes. Functionalized O-heterocyclic boronic acid derivatives are produced using
this transformation, which is mild and exhibits broad functional group
compatibility. Our results demonstrate activation of this boron–O
σ bond using a gold catalysis strategy that is fundamentally
different from that used previously for other boron addition reactions.
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Affiliation(s)
- Joshua J Hirner
- Department of Chemistry, University of California, Irvine , Irvine, California 92617-2025, United States
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