251
|
Padala K, Jeganmohan M. Highly Regio- and Stereoselective Ruthenium(II)-Catalyzed Direct ortho-Alkenylation of Aromatic and Heteroaromatic Aldehydes with Activated Alkenes under Open Atmosphere. Org Lett 2012; 14:1134-7. [DOI: 10.1021/ol3000684] [Citation(s) in RCA: 186] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Kishor Padala
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
| | - Masilamani Jeganmohan
- Department of Chemistry, Indian Institute of Science Education and Research, Pune 411021, India
| |
Collapse
|
252
|
Ariafard A, Tabatabaie ES, Monfared AT, Assar SHA, Hyland CJT, Yates BF. Theoretical Investigation into the Palladium-Catalyzed Silaboration of Pyridines. Organometallics 2012. [DOI: 10.1021/om2008106] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Alireza Ariafard
- Department of Chemistry, Faculty of Science, Central
Tehran Branch, Islamic Azad University,
Shahrak Gharb, Tehran, Iran
- School of Chemistry, University of Tasmania, Private Bag
75, Hobart, Tasmania 7001, Australia
| | - Elham S. Tabatabaie
- Department of Chemistry, Faculty of Science, Central
Tehran Branch, Islamic Azad University,
Shahrak Gharb, Tehran, Iran
| | - Ali T. Monfared
- Department of Chemistry, Faculty of Science, Central
Tehran Branch, Islamic Azad University,
Shahrak Gharb, Tehran, Iran
| | - Shirin H. A. Assar
- Department of Chemistry, Faculty of Science, Central
Tehran Branch, Islamic Azad University,
Shahrak Gharb, Tehran, Iran
| | | | - Brian F. Yates
- School of Chemistry, University of Tasmania, Private Bag
75, Hobart, Tasmania 7001, Australia
| |
Collapse
|
253
|
Yang FL, Ma XT, Tian SK. Oxidative Mizoroki-Heck-Type Reaction of Arylsulfonyl Hydrazides for a Highly Regio- and Stereoselective Synthesis of Polysubstituted Alkenes. Chemistry 2012; 18:1582-5. [DOI: 10.1002/chem.201103671] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2011] [Indexed: 11/11/2022]
|
254
|
Kwon KH, Lee DW, Yi CS. Scope and Mechanistic Study of the Coupling Reaction of α, β-Unsaturated Carbonyl Compounds with Alkenes: Uncovering Electronic Effects on Alkene Insertion vs Oxidative Coupling Pathways. Organometallics 2012; 31:495-504. [PMID: 22368318 PMCID: PMC3285248 DOI: 10.1021/om201190v] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The cationic ruthenium-hydride complex [(C(6)H(6))(PCy(3))(CO)RuH](+)BF(4) (-) (1) was found to be a highly effective catalyst for the intermolecular conjugate addition of simple alkenes to α,β-unsaturated carbonyl compounds to give (Z)-selective tetrasubstituted olefin products. The analogous coupling reaction of cinnamides with electron-deficient olefins led to the oxidative coupling of two olefinic C-H bonds in forming (E)-selective diene products. The intramolecular version of the coupling reaction efficiently produced indene and bicyclic fulvene derivatives. The empirical rate law for the coupling reaction of ethyl cinnamate with propene was determined as: rate = k[1](1)[propene](0)[cinnamate](-1). A negligible deuterium kinetic isotope effect (k(H)/k(D) = 1.1±0.1) was measured from both (E)-C(6)H(5)CH=C(CH(3))CONHCH(3) and (E)-C(6)H(5)CD=C(CH(3))CONHCH(3) with styrene. In contrast, a significant normal isotope effect (k(H)/k(D) = 1.7±0.1) was observed from the reaction of (E)-C(6)H(5)CH=C(CH(3))CONHCH(3) with styrene and styrene-d(10). A pronounced carbon isotope effect was measured from the coupling reaction of (E)-C(6)H(5)CH=CHCO(2)Et with propene ((13)C(recovered)/(13)C(virgin) at C(β) = 1.019(6)), while a negligible carbon isotope effect ((13)C(recovered)/(13)C(virgin) at C(β) = 0.999(4)) was obtained from the reaction of (E)-C(6)H(5)CH=C(CH(3))CONHCH(3) with styrene. Hammett plots from the correlation of para-substituted p-X-C(6)H(4)CH=CHCO(2)Et (X = OCH(3), CH(3), H, F, Cl, CO(2)Me, CF(3)) with propene and from the treatment of (E)-C(6)H(5)CH=CHCO(2)Et with a series of para-substituted styrenes p-Y-C(6)H(4)CH=CH(2) (Y = OCH(3), CH(3), H, F, Cl, CF(3)) gave the positive slopes for both cases (ρ = +1.1±0.1 and +1.5±0.1, respectively). Eyring analysis of the coupling reaction led to the thermodynamic parameters, Δ H(‡) = 20±2 kcal mol(-1) and S(‡) = -42±5 e.u. Two separate mechanistic pathways for the coupling reaction have been proposed on the basis of these kinetic and spectroscopic studies.
Collapse
Affiliation(s)
- Ki-Hyeok Kwon
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881 United States
| | - Do W. Lee
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881 United States
| | - Chae S. Yi
- Department of Chemistry, Marquette University, Milwaukee, Wisconsin 53201-1881 United States
| |
Collapse
|
255
|
Padala K, Pimparkar S, Madasamy P, Jeganmohan M. Ruthenium-catalyzed regioselective oxidative coupling of aromatic and heteroaromatic esters with alkenes under an open atmosphere. Chem Commun (Camb) 2012; 48:7140-2. [DOI: 10.1039/c2cc33339b] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
256
|
Xin PY, Niu HY, Qu GR, Ding RF, Guo HM. Nickel catalyzed alkylation of N-aromatic heterocycles with Grignard reagents through direct C–H bond functionalization. Chem Commun (Camb) 2012; 48:6717-9. [DOI: 10.1039/c2cc32396f] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
257
|
Li J, Kornhaaß C, Ackermann L. Ruthenium-catalyzed oxidative C–H alkenylation of aryl carbamates. Chem Commun (Camb) 2012; 48:11343-5. [DOI: 10.1039/c2cc36196e] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
258
|
Hyodo I, Tobisu M, Chatani N. Regioselective C–H bond functionalizations of acridines using organozinc reagents. Chem Commun (Camb) 2012; 48:308-10. [DOI: 10.1039/c1cc16582h] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
259
|
|
260
|
Huang Y, Song F, Wang Z, Xi P, Wu N, Wang Z, Lan J, You J. Dehydrogenative Heck coupling of biologically relevant N-heteroarenes with alkenes: discovery of fluorescent core frameworks. Chem Commun (Camb) 2012; 48:2864-6. [DOI: 10.1039/c2cc17557f] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
261
|
Zhang Y, Li Z, Liu ZQ. Pd-Catalyzed Olefination of Furans and Thiophenes with Allyl Esters. Org Lett 2011; 14:226-9. [DOI: 10.1021/ol203013p] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuexia Zhang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou Gansu 730000, P. R. China
| | - Zejiang Li
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou Gansu 730000, P. R. China
| | - Zhong-Quan Liu
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou Gansu 730000, P. R. China
| |
Collapse
|
262
|
Mizuta Y, Obora Y, Shimizu Y, Ishii Y. para-Selective Aerobic Oxidative CH Olefination of Aminobenzenes Catalyzed by Palladium/Molybdovanadophosphoric acid/2,4,6-Trimethylbenzoic Acid System. ChemCatChem 2011. [DOI: 10.1002/cctc.201100375] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
263
|
Patureau FW, Nimphius C, Glorius F. Rh Catalyzed C–H Activation and Oxidative Olefination without Chelate Assistance: On the Reactivity of Bromoarenes. Org Lett 2011; 13:6346-9. [DOI: 10.1021/ol202557w] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Frederic W. Patureau
- Organisch-Chemisches Institut der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, and Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 52, 67663 Kaiserslautern, Germany
| | - Corinna Nimphius
- Organisch-Chemisches Institut der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, and Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 52, 67663 Kaiserslautern, Germany
| | - Frank Glorius
- Organisch-Chemisches Institut der Westfälischen Wilhelms-Universität Münster, Corrensstrasse 40, 48149 Münster, Germany, and Fachbereich Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Strasse Geb. 52, 67663 Kaiserslautern, Germany
| |
Collapse
|
264
|
Ye M, Gao GL, Edmunds AJF, Worthington PA, Morris JA, Yu JQ. Ligand-Promoted C3-Selective Arylation of Pyridines with Pd Catalysts: Gram-Scale Synthesis of (±)-Preclamol. J Am Chem Soc 2011; 133:19090-3. [DOI: 10.1021/ja209510q] [Citation(s) in RCA: 211] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mengchun Ye
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Guo-Lin Gao
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | | | - P. A. Worthington
- Syngenta Ltd., Jealott’s Hill International Research Centre, Bracknell, Berkshire RG42 6EY, U.K
| | - James A. Morris
- Syngenta Ltd., Jealott’s Hill International Research Centre, Bracknell, Berkshire RG42 6EY, U.K
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| |
Collapse
|
265
|
Yu YY, Niphakis MJ, Georg GI. Palladium(II)-catalyzed dehydrogenative alkenylation of cyclic enaminones via the Fujiwara-Moritani reaction. Org Lett 2011; 13:5932-5. [PMID: 21995751 PMCID: PMC3235746 DOI: 10.1021/ol202677g] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A new Pd(II)-catalyzed dehydrogenative alkenylation reaction involving two alkenes was developed. A variety of nonaromatic, cyclic enaminones were successfully coupled to primary and secondary alkenes yielding a series of unique 1,3-dienes. The generality of this transformation presents a useful strategy for directly cross-coupling alkenes and offers an attractive new approach to functionalize enaminones.
Collapse
Affiliation(s)
- Yi-Yun Yu
- Department of Chemistry and Department of Medicinal Chemistry and the Institute for Therapeutics Discovery and Development, University of Minnesota, 717 Delaware Street SE, Minneapolis, Minnesota 55414
| | - Micah J. Niphakis
- Department of Chemistry and Department of Medicinal Chemistry and the Institute for Therapeutics Discovery and Development, University of Minnesota, 717 Delaware Street SE, Minneapolis, Minnesota 55414
| | - Gunda I. Georg
- Department of Chemistry and Department of Medicinal Chemistry and the Institute for Therapeutics Discovery and Development, University of Minnesota, 717 Delaware Street SE, Minneapolis, Minnesota 55414
| |
Collapse
|
266
|
|
267
|
Guan BT, Hou Z. Rare-Earth-Catalyzed C–H Bond Addition of Pyridines to Olefins. J Am Chem Soc 2011; 133:18086-9. [DOI: 10.1021/ja208129t] [Citation(s) in RCA: 210] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Bing-Tao Guan
- Organometallic Chemistry Laboratory and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Zhaomin Hou
- Organometallic Chemistry Laboratory and Advanced Catalyst Research Team, RIKEN Advanced Science Institute, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| |
Collapse
|
268
|
Guo P, Joo JM, Rakshit S, Sames D. C-H arylation of pyridines: high regioselectivity as a consequence of the electronic character of C-H bonds and heteroarene ring. J Am Chem Soc 2011; 133:16338-41. [PMID: 21939181 PMCID: PMC3227677 DOI: 10.1021/ja206022p] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
We report a new catalytic protocol for highly selective C-H arylation of pyridines containing common and synthetically versatile electron-withdrawing substituents (NO(2), CN, F and Cl). The new protocol expands the scope of catalytic azine functionalization as the excellent regioselectivity at the 3- and 4-positions well complements the existing methods for C-H arylation and Ir-catalyzed borylation, as well as classical functionalization of pyridines. Another important feature of the new method is its flexibility to adapt to challenging substrates by a simple modification of the carboxylic acid ligand or the use of silver salts. The regioselectivity can be rationalized on the basis of the key electronic effects (repulsion between the nitrogen lone pair and polarized C-Pd bond at C2-/C6-positions and acidity of the C-H bond) in combination with steric effects (sensitivity to bulky substituents).
Collapse
Affiliation(s)
- Pengfei Guo
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York, 10027
| | - Jung Min Joo
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York, 10027
| | - Souvik Rakshit
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York, 10027
| | - Dalibor Sames
- Department of Chemistry, Columbia University, 3000 Broadway, New York, New York, 10027
| |
Collapse
|
269
|
García-Rubia A, Urones B, Gómez Arrayás R, Carretero JC. PdII-Catalyzed CH Olefination of N-(2-Pyridyl)sulfonyl Anilines and Arylalkylamines. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105611] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
270
|
García-Rubia A, Urones B, Gómez Arrayás R, Carretero JC. PdII-Catalyzed CH Olefination of N-(2-Pyridyl)sulfonyl Anilines and Arylalkylamines. Angew Chem Int Ed Engl 2011; 50:10927-31. [DOI: 10.1002/anie.201105611] [Citation(s) in RCA: 125] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2011] [Indexed: 01/22/2023]
|
271
|
Song G, Gong X, Li X. Synthesis of Quinolines via Rh(III)-Catalyzed Oxidative Annulation of Pyridines. J Org Chem 2011; 76:7583-9. [DOI: 10.1021/jo201266u] [Citation(s) in RCA: 142] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Guoyong Song
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Xue Gong
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| | - Xingwei Li
- Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian 116023, China
| |
Collapse
|
272
|
Willwacher J, Rakshit S, Glorius F. Investigating N-methoxy-N'-aryl ureas in oxidative C-H olefination reactions: an unexpected oxidation behaviour. Org Biomol Chem 2011; 9:4736-40. [PMID: 21625722 DOI: 10.1039/c1ob05636k] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein, we report a urea derived directing group for mild and highly selective oxidative C-H bond olefination. Subsequent intramolecular Michael addition affords dihydroquinazolinones in good yields. The N-O bond of the urea substrate exhibits superior oxidative behaviour compared to a variety of other external oxidants.
Collapse
Affiliation(s)
- Jens Willwacher
- Westfälische Wilhelms-Universität Münster, Organisch-Chemisches Institut, Corrensstr. 40, 48149 Münster, Germany
| | | | | |
Collapse
|
273
|
Donohoe TJ, Bower JF, Baker DB, Basutto JA, Chan LKM, Gallagher P. Synthesis of 2,4,6-trisubstituted pyridines via an olefin cross-metathesis/Heck–cyclisation–elimination sequence. Chem Commun (Camb) 2011; 47:10611-3. [DOI: 10.1039/c1cc14257g] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|