1
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Sun J, Guo Y, Xia J, Zheng G, Zhang Q. Catalyst-Free Trans-Selective Oxyiodination and Oxychlorination of Alkynes Employing N-X (Halogen) Reagents. Molecules 2023; 28:7420. [PMID: 37959838 PMCID: PMC10650761 DOI: 10.3390/molecules28217420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 10/28/2023] [Accepted: 11/02/2023] [Indexed: 11/15/2023] Open
Abstract
β-halogenated enol esters and ethers are versatile building blocks in organic synthesis, which has attracted increasing attention. In this study, we report the facile trans-oxyiodination and oxychlorination of alkynes, leading to the direct construction of versatile halogenated enol esters and ethers. This transformation features an easy operation, optimal atomic economy, a strong functional group tolerance, broad substrate scope, and excellent trans-selectivity. Employing highly electrophilic bifunctional N-X (halogen) reagents was the key to achieving broad reaction generality. To our knowledge, this transformation represents the first oxyhalogenation system employing N-X (halogen) reagents as both oxylation and halogenation sources.
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Affiliation(s)
- Jiaqiong Sun
- School of Environment, Northeast Normal University, Changchun 130117, China;
| | - Yunliang Guo
- School of Environment, Northeast Normal University, Changchun 130117, China;
| | - Jiuli Xia
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun 130024, China; (J.X.); (Q.Z.)
| | - Guangfan Zheng
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun 130024, China; (J.X.); (Q.Z.)
| | - Qian Zhang
- Key Laboratory of Functional Organic Molecule Design & Synthesis of Jilin Province, Department of Chemistry, Northeast Normal University, Changchun 130024, China; (J.X.); (Q.Z.)
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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2
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Sasaki S, Kikuchi J, Ito S, Yoshikai N. Stereoselective Approach to Multisubstituted Enolates from Unactivated Alkynes: Oxyalkylidenation of Alkynyl Ketone Enolates with Aldehydes. J Org Chem 2023; 88:14096-14104. [PMID: 37733580 DOI: 10.1021/acs.joc.3c01615] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/23/2023]
Abstract
The preparation of multisubstituted enolates with precise regio- and stereocontrol is a nontrivial task when conventional deprotonation methods are used on the corresponding carbonyl compounds. We describe herein an approach to preparing stereodefined enolates by leveraging the stereoselective oxyfunctionalization of unactivated alkynes, particularly in the context of the alkynylogous aldol reaction. trans-Iodo(III)acetoxylation of alkynes and subsequent Sonogashira coupling allow for the facile preparation of multisubstituted enynyl acetates, which can be deacetylated by MeLi into the corresponding enolates. The alkynyl enolates react with aldehydes to afford γ,δ-unsaturated β-diketones through a cascade of alkynylogous aldol addition, intramolecular Michael addition, and ring opening of the oxetene intermediate.
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Affiliation(s)
- Shuma Sasaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Jun Kikuchi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
| | - Shingo Ito
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Naohiko Yoshikai
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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3
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Liu M, Sun J, Zhang T, Ding Y, Han Y, Martín‐Montero R, Lan Y, Shi B, Engle KM. Regio- and Stereoselective 1,2-Oxyhalogenation of Non-Conjugated Alkynes via Directed Nucleopalladation: Catalytic Access to Tetrasubstituted Alkenes. Angew Chem Int Ed Engl 2022; 61:e202209099. [PMID: 36082442 PMCID: PMC9588632 DOI: 10.1002/anie.202209099] [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: 06/21/2022] [Indexed: 01/12/2023]
Abstract
A catalytic 1,2-oxyhalogenation method that converts non-conjugated internal alkynes into tetrasubstituted alkenes with high regio- and stereoselectivity is described. Mechanistically, the reaction involves a PdII /PdIV catalytic cycle that begins with a directed oxypalladation step. The origin of regioselectivity is the preference for formation of a six-membered palladacycle intermediate, which is facilitated by an N,N-bidentate 2-(pyridin-2-yl)isopropyl (PIP) amide directing group. Selectivity for C(alkenyl)-X versus -N (X=halide) reductive elimination from the PdIV center depends on the identity of the halide anion; bromide and iodide engage in C(alkenyl)-X formation, while intramolecular C(alkenyl)-N reductive elimination occurs with chloride to furnish a lactam product. DFT calculations shed light on the origins of this phenomenon.
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Affiliation(s)
- Mingyu Liu
- Department of ChemistryThe Scripps Research Institute10550 N. Torrey Pines RoadLa JollaCA 92037USA
| | - Juntao Sun
- Department of ChemistryThe Scripps Research Institute10550 N. Torrey Pines RoadLa JollaCA 92037USA
| | - Tao Zhang
- Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhouHenan450001P. R. China
| | - Yi Ding
- Department of ChemistryZhejiang UniversityHangzhouZhejiang310027P. R. China
| | - Ye‐Qiang Han
- Department of ChemistryZhejiang UniversityHangzhouZhejiang310027P. R. China
| | - Raúl Martín‐Montero
- Department of ChemistryThe Scripps Research Institute10550 N. Torrey Pines RoadLa JollaCA 92037USA
| | - Yu Lan
- Green Catalysis Center and College of ChemistryZhengzhou UniversityZhengzhouHenan450001P. R. China,School of Chemistry and Chemical EngineeringChongqing Key Laboratory of Theoretical and Computational ChemistryChongqing UniversityChongqing400030P. R. China
| | - Bing‐Feng Shi
- Department of ChemistryZhejiang UniversityHangzhouZhejiang310027P. R. China
| | - Keary M. Engle
- Department of ChemistryThe Scripps Research Institute10550 N. Torrey Pines RoadLa JollaCA 92037USA
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4
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Liu M, Sun J, Zhang T, Ding Y, Han YQ, Martín-Montero R, Lan Y, Shi BF, Engle KM. Regio‐ and Stereoselective 1,2‐Oxyhalogenation of Non‐ Conjugated Alkynes via Directed Nucleopalladation: Catalytic Access to Tetrasubstituted Alkenes. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209099] [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]
Affiliation(s)
- Mingyu Liu
- The Scripps Research Institute Chemistry UNITED STATES
| | - Juntao Sun
- The Scripps Research Institute Chemistry UNITED STATES
| | - Tao Zhang
- Zhengzhou University College of Chemistry CHINA
| | - Yi Ding
- Zhejiang University Chemistry UNITED STATES
| | | | | | - Yu Lan
- Zhengzhou University College of Chemistry CHINA
| | | | - Keary Mark Engle
- The Scripps Research Institute Department of Chemistry 10550 N. Torrey Pines Rd. 92037 La Jolla UNITED STATES
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5
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Wang CS, Tan PSL, Ding W, Ito S, Yoshikai N. Regio- and Stereoselective Synthesis of Enol Carboxylate, Phosphate, and Sulfonate Esters via Iodo(III)functionalization of Alkynes. Org Lett 2021; 24:430-434. [PMID: 34962817 DOI: 10.1021/acs.orglett.1c04123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
β-Iodo(III)enol carboxylates, phosphates, and tosylates can be efficiently synthesized through regio- and stereoselective iodo(III)functionalization of alkynes. The combination of chlorobenziodoxole and silver salt has proven to generate a versatile cationic iodine(III) electrophile to activate alkynes and engage various carboxylic acids, triethyl phosphate, and p-toluenesulfonic acid as nucleophiles. The β-iodo(III)enol esters serve as starting materials for the synthesis of multisubstituted alkenes through sequential cross-coupling of the C-I(III) and C-O bonds.
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Affiliation(s)
- Chang-Sheng Wang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Ploypailin Siew Ling Tan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Wei Ding
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Shingo Ito
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Naohiko Yoshikai
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore.,Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan
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6
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Tiekink ERT. Supramolecular architectures sustained by delocalised C–I⋯π(arene) interactions in molecular crystals and the propensity of their formation. CrystEngComm 2021. [DOI: 10.1039/d0ce01677b] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A survey of delocalised C–I⋯π(chelate ring) interactions is presented.
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Affiliation(s)
- Edward R. T. Tiekink
- Research Centre for Crystalline Materials
- School of Science and Technology
- Sunway University
- Bandar Sunway
- Malaysia
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7
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Tobrman T, Edlová T, Čubiňák M. Cross-Coupling Reactions of Double or Triple Electrophilic Templates for Alkene Synthesis. SYNTHESIS-STUTTGART 2020. [DOI: 10.1055/s-0040-1707270] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractThis short review summarizes the latest advances in the cross-coupling reactions of double and triple electrophilic templates bearing halogen atoms and an activated C–O bond. Reactions involving the formation of a C–C bond as part of di-, tri-, and tetrasubstituted double bond systems are highlighted.1 Introduction2 Cross-Coupling Reactions of Halovinyl Tosylates3 Cross-Coupling Reactions of Halovinyl Triflates4 Cross-Coupling Reactions of Halovinyl Phosphates5 Cross-Coupling Reactions of Halovinyl Esters6 Conclusion
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8
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Abstract
In the last years there has been an increasing interest in the search for protocols to obtain β-haloenol esters in an efficient and selective manner as they are versatile building blocks in synthetic organic chemistry. In this article, metal-catalyzed transformations allowing the access to both acyclic and cyclic (i.e., haloenol lactones) β-haloenol esters are reviewed. Metal-catalyzed reactions in which these molecules participate as substrates are also discussed.
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9
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Liu G, Zhang X, Kuang G, Lu N, Fu Y, Peng Y, Xiao Q, Zhou Y. Phosphine-Free Ru-Catalyzed Regio- and Stereoselective Addition of Benzoic Acids to Trifluoromethylated Alkynes toward Facile Access to Trifluoromethyl Group-Substituted ( E)-Enol Esters. ACS OMEGA 2020; 5:4158-4166. [PMID: 32149245 PMCID: PMC7057715 DOI: 10.1021/acsomega.9b03936] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Accepted: 11/25/2019] [Indexed: 06/10/2023]
Abstract
A combination of ruthenium catalyst with silver salt and copper salt was proved to be a highly efficient protocol for the direct addition reaction of benzoic acids with unsymmetrical trifluoromethylated internal alkynes. Diverse trifluoromethyl group-substituted (E)-enol esters were readily obtained for a broad substrate scope in moderate to good yields with excellent regio- and stereoselectivities under mild reaction conditions.
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Affiliation(s)
- Guangyuan Liu
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Xingxing Zhang
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Guanghua Kuang
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Naihao Lu
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Yang Fu
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Yiyuan Peng
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
| | - Qiang Xiao
- Jiangxi
Key Laboratory of Functional Organic Molecules, Jiangxi Science and Technology Normal University, No. 605 Fenglin Road, Nanchang 330013, China
| | - Yirong Zhou
- Key
Laboratory of Functional Small Organic Molecule, Ministry of Education,
College of Chemistry and Chemical Engineering, Jiangxi Normal University, No. 99 Ziyang Road, Nanchang 330022, China
- Hubei
Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation,
School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, No. 13 Hangkong Road, Wuhan 430030, China
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10
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Muthusamy G, Pansare SV. Stereoselective synthesis of E-3-(arylmethylidene)-5-(alkyl/aryl)-2(3H)-furanones by sequential hydroacyloxylation-Mizoroki–Heck reactions of iodoalkynes. Org Biomol Chem 2018; 16:7971-7983. [DOI: 10.1039/c8ob02063a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Stereoselective hydroacyloxylation of iodoalkynes with β-aryl cinnamic acids and subsequent Mizoroki–Heck reaction provides an efficient route to substituted 2(3H)-furanones.
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Affiliation(s)
| | - Sunil V. Pansare
- Department of Chemistry
- Memorial University
- St. John's
- Canada A1B 3X7
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11
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Hu Y, Yu K, Shi LL, Liu L, Sui JJ, Liu DY, Xiong B, Sun JS. o-(p-Methoxyphenylethynyl)phenyl Glycosides: Versatile New Glycosylation Donors for the Highly Efficient Construction of Glycosidic Linkages. J Am Chem Soc 2017; 139:12736-12744. [DOI: 10.1021/jacs.7b07020] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yang Hu
- The National Research Centre
for Carbohydrate Synthesis, Jiangxi Normal University, 99 Ziyang
Avenue, Nanchang 330022, China
| | - Ke Yu
- The National Research Centre
for Carbohydrate Synthesis, Jiangxi Normal University, 99 Ziyang
Avenue, Nanchang 330022, China
| | - Li-Li Shi
- The National Research Centre
for Carbohydrate Synthesis, Jiangxi Normal University, 99 Ziyang
Avenue, Nanchang 330022, China
| | - Lei Liu
- The National Research Centre
for Carbohydrate Synthesis, Jiangxi Normal University, 99 Ziyang
Avenue, Nanchang 330022, China
| | - Jing-Jing Sui
- The National Research Centre
for Carbohydrate Synthesis, Jiangxi Normal University, 99 Ziyang
Avenue, Nanchang 330022, China
| | - De-Yong Liu
- The National Research Centre
for Carbohydrate Synthesis, Jiangxi Normal University, 99 Ziyang
Avenue, Nanchang 330022, China
| | - Bin Xiong
- The National Research Centre
for Carbohydrate Synthesis, Jiangxi Normal University, 99 Ziyang
Avenue, Nanchang 330022, China
| | - Jian-Song Sun
- The National Research Centre
for Carbohydrate Synthesis, Jiangxi Normal University, 99 Ziyang
Avenue, Nanchang 330022, China
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12
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González-Liste PJ, Francos J, García-Garrido SE, Cadierno V. Gold-Catalyzed Regio- and Stereoselective Addition of Carboxylic Acids to Iodoalkynes: Access to (Z)-β-Iodoenol Esters and 1,4-Disubstituted (Z)-Enynyl Esters. J Org Chem 2017; 82:1507-1516. [DOI: 10.1021/acs.joc.6b02712] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Pedro J. González-Liste
- Laboratorio de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Javier Francos
- Laboratorio de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Sergio E. García-Garrido
- Laboratorio de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Victorio Cadierno
- Laboratorio de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 33006 Oviedo, Spain
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13
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Okamoto N, Sueda T, Yanada R. Tandem Reaction of Enynyl Acetate: Precursor of Allenyl Ketones. Chem Pharm Bull (Tokyo) 2016; 64:941-6. [PMID: 27373650 DOI: 10.1248/cpb.c16-00170] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Deacetylation of enynyl acetates under basic conditions allows convenient access to reactive allenyl ketones, which can then undergo 1,4-addition of nucleophiles to furnish β,γ-unsaturated ketones. Benzofuran and indole derivatives have also been obtained from enynyl acetates with an o-hetero-atom-substituted aryl group via intramolecular 1,4-addition.
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Affiliation(s)
- Noriko Okamoto
- Faculty of Pharmaceutical Sciences, Hiroshima International University
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14
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Volpe R, Aurelio L, Gillin MG, Krenske EH, Flynn BL. Mapping the Interactions of I2, I., I−, and I+with Alkynes and Their Roles in Iodocyclizations. Chemistry 2015; 21:10191-9. [DOI: 10.1002/chem.201500384] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Indexed: 01/24/2023]
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15
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Priebbenow DL, Gable RW, Baell J. Regio- and Stereoselective Iodoacyloxylations of Alkynes. J Org Chem 2015; 80:4412-8. [DOI: 10.1021/acs.joc.5b00250] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Daniel L. Priebbenow
- Monash
Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
| | - Robert. W. Gable
- School
of Chemistry, University of Melbourne, Melbourne, Victoria 3010, Australia
| | - Jonathan Baell
- Monash
Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria 3052, Australia
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16
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Okamoto N, Sueda T, Minami H, Miwa Y, Yanada R. Regioselective Iodoazidation of Alkynes: Synthesis of α,α-Diazidoketones. Org Lett 2015; 17:1336-9. [DOI: 10.1021/acs.orglett.5b00395] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Noriko Okamoto
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Takuya Sueda
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Hideki Minami
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Yoshihisa Miwa
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Reiko Yanada
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
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17
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Montoro T, Tardajos G, Guerrero A, Torres MDR, Salgado C, Fernández I, Osío Barcina J. σ-Hole⋯π and lone pair⋯π interactions in benzylic halides. Org Biomol Chem 2015; 13:6194-202. [DOI: 10.1039/c5ob00366k] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Depending on the relative orientation of the halogen atom and the phenyl ring, the benzylic halides studied show “classical” halogen⋯π bonds as well as intramolecular interactions without σ-hole participation based on n → π* (LP⋯π) interactions.
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Affiliation(s)
| | - Gloria Tardajos
- Departamento de Química Física
- Facultad de Ciencias Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Andrés Guerrero
- Departamento de Química Física
- Facultad de Ciencias Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - María del Rosario Torres
- Laboratorio de difracción de Rayos X
- Facultad de Ciencias Químicas
- Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Cástor Salgado
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas. Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - Israel Fernández
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas. Universidad Complutense de Madrid
- 28040 Madrid
- Spain
| | - José Osío Barcina
- Departamento de Química Orgánica
- Facultad de Ciencias Químicas. Universidad Complutense de Madrid
- 28040 Madrid
- Spain
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18
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Okamoto N, Sueda T, Yanada R. Bi(OTf)3-Catalyzed Tandem Meyer–Schuster Rearrangement and 1,4-Addition to the Resulting Vinyl Ketone. J Org Chem 2014; 79:9854-9. [DOI: 10.1021/jo5017663] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Noriko Okamoto
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Takuya Sueda
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
| | - Reiko Yanada
- Faculty of Pharmaceutical
Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
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19
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Heredia AA, Soria-Castro SM, Bouchet LM, Oksdath-Mansilla G, Barrionuevo CA, Caminos DA, Bisogno FR, Argüello JE, Peñéñory AB. Stereoselective one-pot synthesis of β-alkylsulfide enol esters. Base-triggered rearrangement under mild conditions. Org Biomol Chem 2014; 12:6516-26. [PMID: 25029604 DOI: 10.1039/c4ob01011f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A stereoselective one-pot procedure was developed to prepare S-substituted (Z)-enol esters through a base-triggered rearrangement. This transition metal-free multicomponent approach can be performed under an air atmosphere at room temperature, tolerates a wide set of chemical functionalities and generally affords high isolated yields. The (Z)-selectivity arises from the [1,4]-S- to O-acyl migration.
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Affiliation(s)
- Adrián A Heredia
- INFIQC-CONICET, Dpto. de Química Orgánica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Ciudad Universitaria, X5000HUA Córdoba, Argentina.
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20
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Aurelio L, Volpe R, Halim R, Scammells PJ, Flynn BL. Synthesis of Thieno-Fused Heterocycles through Reiterative Iodocyclization. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400072] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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21
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Liu L, Zhang-Negrerie D, Du Y, Zhao K. PhICl2 and Wet DMF: An Efficient System for Regioselective Chloroformyloxylation/α-Chlorination of Alkenes/α,β-Unsaturated Compounds. Org Lett 2014; 16:436-9. [DOI: 10.1021/ol403321n] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Le Liu
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Daisy Zhang-Negrerie
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yunfei Du
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Kang Zhao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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22
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Xia XF, Gu Z, Liu W, Wang N, Wang H, Xia Y, Gao H, Liu X. Selective oxygenation of alkynes: a direct approach to diketones and vinyl acetate. Org Biomol Chem 2014; 12:9909-13. [PMID: 25356631 DOI: 10.1039/c4ob01404a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Convenient and expedient methods for the synthesis of α-diketones and β-haloenol acetates from arylalkynes using PhI(OAc)2 as an oxidant are developed at room temperature.
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Affiliation(s)
- Xiao-Feng Xia
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi, China
| | - Zhen Gu
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi, China
| | - Wentao Liu
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi, China
| | - Ningning Wang
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi, China
| | - Haijun Wang
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi, China
| | - Yongmei Xia
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi, China
| | - Haiyan Gao
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi, China
| | - Xiang Liu
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi, China
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23
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Xie M, Zhang J, Ning P, Zhang Z, Liu X, Wang L. Regio- and stereoselective synthesis of highly functionalized vinyl ethers via coiodination of acetylenic ketones. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.084] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Igawa K, Kawabata T, Ni R, Tomooka K. Synthesis, Structural Analysis, and Reaction of 3-Aza-5-[7]orthocyclophyne. CHEM LETT 2013. [DOI: 10.1246/cl.130735] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Kazunobu Igawa
- Institute for Materials Chemistry and Engineering, Kyushu University
| | | | - Runyan Ni
- Interdisciplinary Graduate School of Engineering Sciences, Kyushu University
| | - Katsuhiko Tomooka
- Institute for Materials Chemistry and Engineering, Kyushu University
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25
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Okamoto N, Ishikura M, Yanada R. Cleavage of carbon-carbon triple bond: direct transformation of alkynes to nitriles. Org Lett 2013; 15:2571-3. [PMID: 23675918 DOI: 10.1021/ol401311h] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
A new cleavage reaction of carbon-carbon triple bonds proceeds efficiently with NIS and TMSN3, giving the corresponding nitriles in moderate to good yields.
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Affiliation(s)
- Noriko Okamoto
- Faculty of Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure, Hiroshima 737-0112, Japan
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26
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Singha R, Dhara S, Ray JK. Highly stereo-selective synthesis of (Z)-2,3-diiodo-1,4-diarylbut-2-ene-1,4-diones via oxidative iodination of 1,4-diarylbuta-1,3-diynes. RSC Adv 2013. [DOI: 10.1039/c3ra44965c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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27
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Zhang Z, Chang L, Wang S, Wang H, Yao ZJ. Synthesis of 2-vinyl-2H-benzotriazoles via NIS-promoted regio/stereoselective addition of 1H-benzotriazole to alkynes. RSC Adv 2013. [DOI: 10.1039/c3ra43075h] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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28
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Gudla V, Balamurugan R. Synthesis of 1-Arylnaphthalenes by Gold-Catalyzed One-Pot Sequential Epoxide to Carbonyl Rearrangement and Cyclization with Arylalkynes. Chem Asian J 2012. [DOI: 10.1002/asia.201200817] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Okamoto N, Yanada R. Multisubstituted Furan Formation from (Z)- or (E)-Enynyl Acetates: Tandem Reactions Accelerated by Electron-Donating Groups on Aromatic Rings. J Org Chem 2012; 77:3944-51. [DOI: 10.1021/jo300251c] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Noriko Okamoto
- Faculty of Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure,
Hiroshima 737-0112, Japan
| | - Reiko Yanada
- Faculty of Pharmaceutical Sciences, Hiroshima International University, 5-1-1 Hirokoshingai, Kure,
Hiroshima 737-0112, Japan
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