201
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Joshi PR, Undeela S, Reddy DD, Singarapu KK, Menon RS. Regioselective Synthesis of Substituted Arenes via Aerobic Oxidative [3 + 3] Benzannulation Reactions of α,β-Unsaturated Aldehydes and Ketones. Org Lett 2015; 17:1449-52. [DOI: 10.1021/acs.orglett.5b00318] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Prabhakar Ramchandra Joshi
- Medicinal
Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
| | - Sridhar Undeela
- Medicinal
Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
| | - Doni Dhanoj Reddy
- Medicinal
Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
| | - Kiran Kumar Singarapu
- Centre
for Nuclear Magnetic Resonance, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
| | - Rajeev S. Menon
- Medicinal
Chemistry and Pharmacology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad, 500 007, India
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202
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A Dehydrogenative Diels-Alder Reaction of Prenyl Derivatives with 2,3-Dichloro-5,6-dicyanobenzoquinone. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201401038] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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203
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Fang Z, Liu Y, Barry BD, Liao P, Bi X. Formation of Benzo[f]-1-indanone Frameworks by Regulable Intramolecular Annulations of gem-Dialkylthio Trienynes. Org Lett 2015; 17:782-5. [DOI: 10.1021/ol5034332] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhongxue Fang
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Ying Liu
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Badru-Deen Barry
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Peiqiu Liao
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Department
of Chemistry, Northeast Normal University, Changchun 130024, China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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204
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Xia Y, Liu Z, Ge R, Xiao Q, Zhang Y, Wang J. Pd-catalyzed cross-coupling of terminal alkynes with ene-yne-ketones: access to conjugated enynes via metal carbene migratory insertion. Chem Commun (Camb) 2015; 51:11233-5. [DOI: 10.1039/c5cc03559g] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pd-catalyzed oxidative cross-coupling of terminal alkynes with ene-yne-ketones has been developed, in which the ene-yne-ketones are served as carbene precursors and metal carbene migratory insertion process is the key step for C–C bond formation.
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Affiliation(s)
- Ying Xia
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
- China
| | - Zhen Liu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
- China
| | - Rui Ge
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
- China
| | - Qing Xiao
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
- China
| | - Yan Zhang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
- China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871
- China
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205
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Li X, Chen XL, Zhang Q, Qu LB, Bi WZ, Sun K, Chen JY, Chen X, Zhao YF. CuSO4-H-phosphonate catalyzed highly stereo- and regioselective dimerization of terminal alkynes. RSC Adv 2015. [DOI: 10.1039/c4ra10617b] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The readily available CuSO4-H-phosphonate catalytic system can catalyze the head-to-head dimerization of terminal alkynes to give the corresponding (E) conjugated enynes selectively in high yield.
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Affiliation(s)
- Xu Li
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Xiao-Lan Chen
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Qing Zhang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Ling-Bo Qu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
- Chemistry and Chemical Engineering School
| | - Wen-Zhu Bi
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Kai Sun
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Jian-Yu Chen
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Xin Chen
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Yu-Fen Zhao
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
- Department of Chemistry
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206
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Geng ZC, Zhang SY, Li NK, Li N, Chen J, Li HY, Wang XW. Organocatalytic Diversity-Oriented Asymmetric Synthesis of Tricyclic Chroman Derivatives. J Org Chem 2014; 79:10772-85. [DOI: 10.1021/jo501560m] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Zhi-Cong Geng
- Key Laboratory
of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Shao-Yun Zhang
- Key Laboratory
of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Nai-Kai Li
- Key Laboratory
of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Ning Li
- Key Laboratory
of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Jian Chen
- Key Laboratory
of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Hai-Yan Li
- Key Laboratory
of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
| | - Xing-Wang Wang
- Key Laboratory
of Organic
Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering
and Materials Science, Soochow University, Suzhou 215123, People’s Republic of China
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207
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Liang Y, Hong X, Yu P, Houk KN. Why Alkynyl Substituents Dramatically Accelerate Hexadehydro-Diels–Alder (HDDA) Reactions: Stepwise Mechanisms of HDDA Cycloadditions. Org Lett 2014; 16:5702-5. [DOI: 10.1021/ol502780w] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Yong Liang
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Xin Hong
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Peiyuan Yu
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
| | - K. N. Houk
- Department
of Chemistry and
Biochemistry, University of California, Los Angeles, California 90095, United States
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208
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Liu G, Kong W, Che J, Zhu G. Palladium-Catalyzed Cross Addition of Terminal Alkynes to Aryl Ynamides: An Unusualtrans-Hydroalkynylation Reaction. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400572] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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209
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Bakalova SM, Gil Santos A. Diels-Alder reactions of chiral isoimidium salts: a computational study. J Org Chem 2014; 79:8202-11. [PMID: 25090582 DOI: 10.1021/jo501407z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Recently, important efforts have been devoted to asymmetric Diels-Alder (DA) cycloadditions. Several chiral auxiliaries and catalysts were tested, originating a multitude of selectivities. Here, we study the ability of the isoimidium group as a dienophile activator in DA reactions, as well as its behavior in the induction of selectivity, when incorporated in chiral auxiliary units. We study dienophiles attached to isoimidium auxiliaries derived from (2R,5R)-2,5-diphenylpyrrolidine and from (R)-bis((R)-1-phenylethyl)amine, and show that they lead to low activation energies in DA additions to different dienes. Reported experimental regio- and endo/exo selectitivites are also fully rationalized. While diastereoselectivities originated by (2R,5R)-2,5-diphenylpyrrolidine based dienophiles can easily be rationalized by a C2 symmetric transition state, several transition states have to be simultaneously accounted for the rationalization of the selectivity obtained with dienophiles based on (R)-bis((R)-1-phenylethyl)amine. In this case, the C2 symmetric structure leads to opposite selectivities to those experimentally observed. Thus, while the structures of the dienophiles derived from these two amines seem similar, their behavior in the induction of stereoselectivity in DA reactions is quite different. Our models, which substantially differ from those previously proposed in the literature, can also be adapted to other reactions in which this type of chiral auxiliaries is used.
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Affiliation(s)
- Snezhana M Bakalova
- REQUIMTE, CQFB, Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade Nova Lisboa , 2829-516 Caparica, Portugal
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210
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Wong YC, Kao TT, Huang JK, Jhang YW, Chou MC, Shia KS. Manganese(III)-Catalyzed Oxidative Cyclization of Aryl 1-Cyanoalk-5-ynyl Ketone Systems: A Convenient and General Approach to Cyclopenta[b]naphthalene Derivatives. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400257] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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211
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Ling F, Li Z, Zheng C, Liu X, Ma C. Palladium/Copper-Catalyzed Aerobic Intermolecular Cyclization of Enediyne Compounds and Alkynes: Interrupting Cycloaromatization for (4 + 2) Cross-Benzannulation. J Am Chem Soc 2014; 136:10914-7. [DOI: 10.1021/ja506795u] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Fei Ling
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Zexiang Li
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Chenguang Zheng
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Xiang Liu
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
| | - Cheng Ma
- Department of Chemistry, Zhejiang University, 20 Yugu Road, Hangzhou 310027, China
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212
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Zatolochnaya OV, Gordeev EG, Jahier C, Ananikov VP, Gevorgyan V. Carboxylate switch between hydro- and carbopalladation pathways in regiodivergent dimerization of alkynes. Chemistry 2014; 20:9578-88. [PMID: 25043968 DOI: 10.1002/chem.201402809] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Indexed: 11/11/2022]
Abstract
Experimental and theoretical investigation of the regiodivergent palladium-catalyzed dimerization of terminal alkynes is presented. Employment of N-heterocyclic carbene-based palladium catalyst in the presence of phosphine ligand allows for highly regio- and stereoselective head-to-head dimerization reaction. Alternatively, addition of carboxylate anion to the reaction mixture triggers selective head-to-tail coupling. Computational studies suggest that reaction proceeds via the hydropalladation pathway favoring head-to-head dimerization under neutral reaction conditions. The origin of the regioselectivity switch can be explained by the dual role of carboxylate anion. Thus, the removal of hydrogen atom by the carboxylate directs reaction from the hydropalladation to the carbopalladation pathway. Additionally, in the presence of the carboxylate anion intermediate, palladium complexes involved in the head-to-tail dimerization display higher stability compared to their analogues for the head-to-head reaction.
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Affiliation(s)
- Olga V Zatolochnaya
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois, 60607-7061 (USA)
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213
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Raji Reddy C, Dilipkumar U, Damoder Reddy M. Novel [4 + 2]-benzannulation to access substituted benzenes and polycyclic aromatic and benzene-fused heteroaromatic compounds. Org Lett 2014; 16:3792-5. [PMID: 25008279 DOI: 10.1021/ol501683v] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A common [4 + 2]-benzannulation of Morita-Baylis-Hillman acetates of acetylenic aldehydes with boronic acids has been developed for the synthesis of aromatic and heteroaromatic compounds through tandem allylic substitution/hydroarylative cycloisomerization process. This method provides a facile and general route to substituted benzenes, naphthalenes, other polycyclic aromatics, and various benzene-fused heteroaromatic compounds such as benzofuran, benzothiophene, indole, and carbazoles.
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Affiliation(s)
- Chada Raji Reddy
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology , Hyderabad 500607, India
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214
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Fang Z, Liu J, Liu Q, Bi X. [3+2] Cycloaddition of Propargylic Alcohols and α‐Oxo Ketene Dithioacetals: Synthesis of Functionalized Cyclopentadienes and Further Application in a Diels–Alder Reaction. Angew Chem Int Ed Engl 2014; 53:7209-13. [DOI: 10.1002/anie.201403014] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2014] [Revised: 04/14/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Zhongxue Fang
- Department of Chemistry, Northeast Normal University, Changchun 130024 (China) http://www.bigroup.com.cn/
| | - Jianquan Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024 (China) http://www.bigroup.com.cn/
| | - Qun Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024 (China) http://www.bigroup.com.cn/
| | - Xihe Bi
- Department of Chemistry, Northeast Normal University, Changchun 130024 (China) http://www.bigroup.com.cn/
- State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071 (China)
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215
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Fang Z, Liu J, Liu Q, Bi X. [3+2] Cycloaddition of Propargylic Alcohols and α‐Oxo Ketene Dithioacetals: Synthesis of Functionalized Cyclopentadienes and Further Application in a Diels–Alder Reaction. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201403014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Zhongxue Fang
- Department of Chemistry, Northeast Normal University, Changchun 130024 (China) http://www.bigroup.com.cn/
| | - Jianquan Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024 (China) http://www.bigroup.com.cn/
| | - Qun Liu
- Department of Chemistry, Northeast Normal University, Changchun 130024 (China) http://www.bigroup.com.cn/
| | - Xihe Bi
- Department of Chemistry, Northeast Normal University, Changchun 130024 (China) http://www.bigroup.com.cn/
- State Key Laboratory of Elemento‐Organic Chemistry, Nankai University, Tianjin 300071 (China)
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216
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Parvatkar PT, Kadam HK, Tilve SG. Intramolecular Diels–Alder reaction as a key step in tandem or sequential processes: a versatile tool for the synthesis of fused and bridged bicyclic or polycyclic compounds. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.02.048] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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217
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Tatton M, Simpson I, Donohoe TJ. De novo synthesis of multisubstituted aryl amines using alkene cross metathesis. Org Lett 2014; 16:1920-3. [PMID: 24646289 PMCID: PMC3979090 DOI: 10.1021/ol500441q] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Indexed: 01/17/2023]
Abstract
The olefin cross-metathesis reaction allows rapid access to 1,5-dicarbonyl intermediates which, upon treatment with a primary or secondary amine, allow the synthesis of a range of multisubstituted carbocyclic aryl amines. This de novo arene synthesis yields nonclassical substitution patterns in a regioselective and predictable approach that is compatible with several functional groups.
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Affiliation(s)
- Matthew
R. Tatton
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K.
| | - Iain Simpson
- AstraZeneca Pharmaceuticals, Mereside, Alderley Park, Macclesfield, Cheshire, SK10 4TG, U.K.
| | - Timothy J. Donohoe
- Department
of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K.
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218
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Alzoubi BM. Designing Molecular Flip-Flops - DFT-Investigations on the Enantiomerization of Hetero Helicenes. Z Anorg Allg Chem 2014. [DOI: 10.1002/zaac.201300555] [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]
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219
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Paria S, Reiser O. Visible Light Photoredox Catalyzed Cascade Cyclizations of α-Bromochalcones or α-Bromocinnamates with Heteroarenes. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301069] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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220
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Zhao F, Li Y, Wang Y, Zhang WX, Xi Z. Selective synthesis of (Z)-2-enynyl-2-hydroxy-imidazolidine-4,5-diones via Cu(i)-mediated multicomponent coupling of terminal alkynes, carbodiimides and oxalyl chloride. Org Biomol Chem 2014; 12:3336-9. [DOI: 10.1039/c4ob00185k] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
(Z)-2-Enynyl-2-hydroxy-imidazolidine-4,5-diones are synthesized via Cu(i)-mediated (Z)-selective geminal coupling among two terminal alkynes, carbodiimides, and oxalyl chloride. Further transformation is explored.
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Affiliation(s)
- Fei Zhao
- Beijing National Laboratory for Molecular Sciences
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Yuexing Li
- Beijing National Laboratory for Molecular Sciences
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Yang Wang
- Beijing National Laboratory for Molecular Sciences
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Wen-Xiong Zhang
- Beijing National Laboratory for Molecular Sciences
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
| | - Zhenfeng Xi
- Beijing National Laboratory for Molecular Sciences
- and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- College of Chemistry
- Peking University
- Beijing 100871, China
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221
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Buxaderas E, Alonso DA, Nájera C. Microwave-assisted palladium-catalyzed highly regio- and stereoselective head to head dimerization of terminal aryl alkynes in water. RSC Adv 2014. [DOI: 10.1039/c4ra08287g] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A highly regio- and stereoselective oxime palladacycle/imidazolinium-catalyzed head to head dimerization of terminal aryl alkynes in water is presented.
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Affiliation(s)
- Eduardo Buxaderas
- Departamento de Química Orgánica & Instituto de Síntesis Orgánica Universidad de Alicante
- Alicante, Spain
| | - Diego A. Alonso
- Departamento de Química Orgánica & Instituto de Síntesis Orgánica Universidad de Alicante
- Alicante, Spain
| | - Carmen Nájera
- Departamento de Química Orgánica & Instituto de Síntesis Orgánica Universidad de Alicante
- Alicante, Spain
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222
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Midya GC, Parasar B, Dhara K, Dash J. Ligand mediated iron catalyzed dimerization of terminal aryl alkynes: scope and limitations. Org Biomol Chem 2014; 12:1812-22. [DOI: 10.1039/c3ob42365d] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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223
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224
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Base-Catalyzed Tandem Michael/Dehydro-Diels-Alder Reaction of α,α-Dicyanoolefins with Electron-Deficient 1,3-Conjugated Enynes: A Facile Entry to Angularly Fused Polycycles. Chemistry 2013; 20:399-404. [DOI: 10.1002/chem.201302960] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 09/09/2013] [Indexed: 11/07/2022]
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225
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Rubio-Pérez L, Azpíroz R, Di Giuseppe A, Polo V, Castarlenas R, Pérez-Torrente JJ, Oro LA. Pyridine-enhanced head-to-tail dimerization of terminal alkynes by a rhodium-N-heterocyclic-carbene catalyst. Chemistry 2013; 19:15304-14. [PMID: 24114872 DOI: 10.1002/chem.201302079] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Indexed: 11/11/2022]
Abstract
A general regioselective rhodium-catalyzed head-to-tail dimerization of terminal alkynes is presented. The presence of a pyridine ligand (py) in a Rh-N-heterocyclic-carbene (NHC) catalytic system not only dramatically switches the chemoselectivity from alkyne cyclotrimerization to dimerization but also enhances the catalytic activity. Several intermediates have been detected in the catalytic process, including the π-alkyne-coordinated Rh(I) species [RhCl(NHC)(η(2)-HC≡CCH2Ph)(py)] (3) and [RhCl(NHC){η(2)-C(tBu)≡C(E)CH=CHtBu}(py)] (4) and the Rh(III)-hydride-alkynyl species [RhClH{-C≡CSi(Me)3}(IPr)(py)2] (5). Computational DFT studies reveal an operational mechanism consisting of sequential alkyne C-H oxidative addition, alkyne insertion, and reductive elimination. A 2,1-hydrometalation of the alkyne is the more favorable pathway in accordance with a head-to-tail selectivity.
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Affiliation(s)
- Laura Rubio-Pérez
- Departamento Química Inorgánica, Instituto Síntesis Química y Catálisis Homogénea, Universidad de Zaragoza-CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza (Spain)
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226
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Zhuang J, Zhang S, Hao H, Jiang L. Photo-dehydro-Diels–Alder reaction of 1-phenyl-2-(pyridyl)acetylenes in acidic aqueous solution. J Photochem Photobiol A Chem 2013. [DOI: 10.1016/j.jphotochem.2013.07.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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227
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Ventre S, Derat E, Amatore M, Aubert C, Petit M. Hydrido-Cobalt Catalyst as a Selective Tool for the Dimerisation of Arylacetylenes: Scope and Theoretical Studies. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300486] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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228
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Bakalova SM, Santos AG. Can Diels-Alder Reactions Lead to trans-Fused Products? A Computational Study of the Competitive [4+2] and [2+4] Cycloaddition of Dienes to α-Aryl-Substituted Cyclohexenones. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201754] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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229
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Chen S, Xu C, Lu L, Shen Q. Palladium-Catalyzed Cross-Coupling of Fluorinated Vinyl Chlorides with Terminal Alkynes: A General Protocol to Fluorinated Enynes. CHINESE J CHEM 2013. [DOI: 10.1002/cjoc.201300352] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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230
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Zatolochnaya OV, Gevorgyan V. Synthesis of Fluoro- and Perfluoroalkyl Arenes via Palladium-Catalyzed [4 + 2] Benzannulation Reaction. Org Lett 2013; 15:2562-5. [PMID: 23656543 DOI: 10.1021/ol401057z] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Olga V. Zatolochnaya
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Vladimir Gevorgyan
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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231
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Matsuda T, Goya T, Liu L, Sakurai Y, Watanuki S, Ishida N, Murakami M. Azulenophenanthrenes from 2,2′-Di(arylethynyl)biphenyls through CC Bond Cleavage of a Benzene Ring. Angew Chem Int Ed Engl 2013; 52:6492-5. [DOI: 10.1002/anie.201300570] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Revised: 03/06/2013] [Indexed: 11/11/2022]
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232
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Matsuda T, Goya T, Liu L, Sakurai Y, Watanuki S, Ishida N, Murakami M. Azulenophenanthrenes from 2,2′-Di(arylethynyl)biphenyls through CC Bond Cleavage of a Benzene Ring. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300570] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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233
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Donner CD. Tandem Michael–Dieckmann/Claisen reaction of ortho-toluates—the Staunton–Weinreb annulation. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.03.034] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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234
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Wong YC, Kao TT, Yeh YC, Hsieh BS, Shia KS. Palladium(0)/Copper(I)-Catalyzed Tandem Cyclization of Aryl 1-Cyanoalk-5-ynyl Ketone System: Rapid Assembly of Cyclopenta[b]naphthalene and Benzo[b]fluorene Derivatives. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300107] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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235
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Ho JH, Lin YC, Chou LT, Chen YZ, Liu WQ, Chuang CL. Syntheses of p-terphenyls and 11,12-dihydroindeno[2,1-a]fluorene by one-pot benzannulation of Diels–Alder reactions of trans-1,2-dichloroethene and dienes. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.02.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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236
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Kocsis LS, Benedetti E, Brummond KM. Microwave-assisted intramolecular dehydrogenative Diels-Alder reactions for the synthesis of functionalized naphthalenes/solvatochromic dyes. J Vis Exp 2013. [PMID: 23609566 DOI: 10.3791/50511] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
Functionalized naphthalenes have applications in a variety of research fields ranging from the synthesis of natural or biologically active molecules to the preparation of new organic dyes. Although numerous strategies have been reported to access naphthalene scaffolds, many procedures still present limitations in terms of incorporating functionality, which in turn narrows the range of available substrates. The development of versatile methods for direct access to substituted naphthalenes is therefore highly desirable. The Diels-Alder (DA) cycloaddition reaction is a powerful and attractive method for the formation of saturated and unsaturated ring systems from readily available starting materials. A new microwave-assisted intramolecular dehydrogenative DA reaction of styrenyl derivatives described herein generates a variety of functionalized cyclopenta[b]naphthalenes that could not be prepared using existing synthetic methods. When compared to conventional heating, microwave irradiation accelerates reaction rates, enhances yields, and limits the formation of undesired byproducts. The utility of this protocol is further demonstrated by the conversion of a DA cycloadduct into a novel solvatochromic fluorescent dye via a Buchwald-Hartwig palladium-catalyzed cross-coupling reaction. Fluorescence spectroscopy, as an informative and sensitive analytical technique, plays a key role in research fields including environmental science, medicine, pharmacology, and cellular biology. Access to a variety of new organic fluorophores provided by the microwave-assisted dehydrogenative DA reaction allows for further advancement in these fields.
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237
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Affiliation(s)
- Rajdip Karmakar
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Phani Mamidipalli
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Sang Young Yun
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
| | - Daesung Lee
- Department of Chemistry, University of Illinois at Chicago, 845 West Taylor Street, Chicago, Illinois 60607, United States
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238
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Wessig P, Matthes A, Schilde U, Kelling A. Asymmetric Synthesis of (1,5)Naphthalenophanes by Dehydro-Diels-Alder Reaction. European J Org Chem 2013. [DOI: 10.1002/ejoc.201201594] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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239
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Xu HD, Zhang RW, Li X, Huang S, Tang W, Hu WH. Rhodium-catalyzed chemo- and regioselective cross-dimerization of two terminal alkynes. Org Lett 2013; 15:840-3. [PMID: 23356993 DOI: 10.1021/ol303531m] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Cross-dimerization of terminal arylacetylenes and terminal propargylic alcohols/amides has been achieved in the presence of a rhodium catalyst. This method features high chemo- and regioselectivities rendering convenient and atom economical access to functionalized enynes.
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Affiliation(s)
- Hua-Dong Xu
- Shanghai Engineering Research Centre of Molecular Therapeutics and New Drug Development, East China Normal University, Shanghai, 200062, China.
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240
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Wessig P, Matthes A. Photochemical synthesis and properties of 1,6- and 1,8-naphthalenophanes. Molecules 2013; 18:1314-24. [PMID: 23337298 PMCID: PMC6269940 DOI: 10.3390/molecules18011314] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2012] [Revised: 01/09/2013] [Accepted: 01/15/2013] [Indexed: 12/03/2022] Open
Abstract
Various 1,6- and 1,8-naphthalenophanes were synthesized by using the Photo-Dehydro-Diels-Alder (PDDA) reaction of bis-ynones. These compounds are easily accessible from ω-(3-iodophenyl)carboxylic acids in three steps. The obtained naphthalenophanes are axially chiral and the activation barrier for the atropisomerization could be determined in some cases by means of dynamic NMR (DNMR) and/or dynamic HPLC (DHPLC) experiments.
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Affiliation(s)
- Pablo Wessig
- Institut für Chemie, Universität Potsdam, Germany.
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241
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Deng GB, Wang ZQ, Xia JD, Qian PC, Song RJ, Hu M, Gong LB, Li JH. Tandem Cyclizations of 1,6-Enynes with Arylsulfonyl Chlorides by Using Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208380] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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242
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Deng GB, Wang ZQ, Xia JD, Qian PC, Song RJ, Hu M, Gong LB, Li JH. Tandem Cyclizations of 1,6-Enynes with Arylsulfonyl Chlorides by Using Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2013; 52:1535-8. [DOI: 10.1002/anie.201208380] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Indexed: 01/08/2023]
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243
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Santander MV, Pastor MB, Nelson JN, Castro C, Karney WL. Hückel and Möbius Bond-Shifting Routes to Configuration Change in Dehydro[4n+2]annulenes. J Org Chem 2012; 78:2033-9. [DOI: 10.1021/jo302072p] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Mitchell V. Santander
- Department
of Chemistry and ‡Department of Environmental Science, University of San Francisco, 2130 Fulton Street, San Francisco,
California 94117, United States
| | - Michael B. Pastor
- Department
of Chemistry and ‡Department of Environmental Science, University of San Francisco, 2130 Fulton Street, San Francisco,
California 94117, United States
| | - Jordan N. Nelson
- Department
of Chemistry and ‡Department of Environmental Science, University of San Francisco, 2130 Fulton Street, San Francisco,
California 94117, United States
| | - Claire Castro
- Department
of Chemistry and ‡Department of Environmental Science, University of San Francisco, 2130 Fulton Street, San Francisco,
California 94117, United States
| | - William L. Karney
- Department
of Chemistry and ‡Department of Environmental Science, University of San Francisco, 2130 Fulton Street, San Francisco,
California 94117, United States
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244
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Hoye TR, Baire B, Niu D, Willoughby PH, Woods BP. The hexadehydro-Diels-Alder reaction. Nature 2012; 490:208-12. [PMID: 23060191 PMCID: PMC3538845 DOI: 10.1038/nature11518] [Citation(s) in RCA: 333] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2012] [Accepted: 08/16/2012] [Indexed: 11/21/2022]
Abstract
o-Benzynes (arynes) are among the most versatile of all reactive (short-lived) intermediates in organic chemistry. These species can be trapped to give products that are valuable from the perspective of both fine (pharmaceuticals) and commodity (agrochemicals, dyes, polymers, etc.) chemicals. Here we show a fundamentally new strategy that unites a de novo generation of benzynes, through the title hexadehydro-Diels–Alder (HDDA) reaction, with their in situ elaboration into structurally complex benzenoid products. In the HDDA reaction a 1,3-diyne is engaged in a [4+2] cycloisomerization with a third (pendant) alkyne–the diynophile–to produce the highly reactive benzyne intermediate. The metal- and reagent-free reaction conditions for this simple, thermal transformation are notable. The subsequent and highly efficient trapping reactions increase the power of the overall process. Finally, we provide examples of how this de novo benzyne generation approach allows new modes of intrinsic reactivity to be revealed.
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Affiliation(s)
- Thomas R Hoye
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, USA.
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245
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Diallo A, Zhao YL, Wang H, Li SS, Ren CQ, Liu Q. Base-Catalyzed Efficient Tandem [3 + 3] and [3 + 2 + 1] Annulation-Aerobic Oxidative Benzannulations. Org Lett 2012; 14:5776-9. [DOI: 10.1021/ol302829f] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Affiliation(s)
- Aboubacar Diallo
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Yu-Long Zhao
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - He Wang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Sha-Sha Li
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Chuan-Qing Ren
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
| | - Qun Liu
- Department of Chemistry, Northeast Normal University, Changchun, 130024, P. R. China
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246
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Kocsis LS, Benedetti E, Brummond KM. A thermal dehydrogenative Diels-Alder reaction of styrenes for the concise synthesis of functionalized naphthalenes. Org Lett 2012; 14:4430-3. [PMID: 22913473 DOI: 10.1021/ol301938z] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Functionalized naphthalenes are valuable building blocks in many important areas. A microwave-assisted, intramolecular dehydrogenative Diels-Alder reaction of styrenyl derivatives to provide cyclopenta[b]naphthalene substructures not previously accessible using existing synthetic methods is described. The synthetic utility of these uniquely functionalized naphthalenes was demonstrated by a single-step conversion of one of these cycloadducts to a fluorophore bearing a structural resemblance to Prodan.
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Affiliation(s)
- Laura S Kocsis
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
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247
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Potowski M, Bauer JO, Strohmann C, Antonchick AP, Waldmann H. Highly Enantioselective Catalytic [6+3] Cycloadditions of Azomethine Ylides. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204394] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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248
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Potowski M, Bauer JO, Strohmann C, Antonchick AP, Waldmann H. Highly Enantioselective Catalytic [6+3] Cycloadditions of Azomethine Ylides. Angew Chem Int Ed Engl 2012; 51:9512-6. [DOI: 10.1002/anie.201204394] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2012] [Indexed: 12/20/2022]
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249
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Zatolochnaya OV, Galenko AV, Gevorgyan V. Beyond the Limits: Palladium-N-Heterocyclic Carbene-Based Catalytic System Enables Highly Efficient [4+2] Benzannulation Reactions. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100983] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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250
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Ananikov VP. Linear encoding of functional groups in the synthesis of heterocyclic compounds: cycloaddition of enyne and alkyne units. Chem Heterocycl Compd (N Y) 2012. [DOI: 10.1007/s10593-012-0959-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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