201
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Graf K, Rühl CL, Rudolph M, Rominger F, Hashmi ASK. Metal-Free Oxidative Cyclization of Alkynyl Aryl Ethers to Benzofuranones. Angew Chem Int Ed Engl 2013; 52:12727-31. [DOI: 10.1002/anie.201304813] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 07/26/2013] [Indexed: 11/07/2022]
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202
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Li DY, Wei Y, Shi M. Grignard Reagent/CuI/LiCl-Mediated Stereoselective Cascade Addition/Cyclization of Diynes: A Novel Pathway for the Construction of 1-Methyleneindene Derivatives. Chemistry 2013; 19:15682-8. [DOI: 10.1002/chem.201302191] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Indexed: 11/08/2022]
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203
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Nösel P, dos Santos Comprido LN, Lauterbach T, Rudolph M, Rominger F, Hashmi ASK. 1,6-Carbene transfer: gold-catalyzed oxidative diyne cyclizations. J Am Chem Soc 2013; 135:15662-6. [PMID: 24050384 DOI: 10.1021/ja4085385] [Citation(s) in RCA: 151] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
In the presence of a gold catalyst an unprecedented oxidative cyclization of diynes takes place. The reaction cascade is initiated by an oxygen transfer from a N-oxide onto a gold-activated alkyne. The formed α-oxo carbene is transferred across the second alkyne yielding a stabilized vinyl carbene/cation. Alkyl migration or sp(3)-CH insertion then terminates the catalytic cycle by formation of highly substituted functionalized indenones. A 1,6-carbene shift could be supported by the oxidation of the vinyl carbene. This protocol represents an attractive alternative to procedures which are based on the metal-catalyzed decomposition of hazardous, not easily accessible, diazo compounds.
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Affiliation(s)
- Pascal Nösel
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg , Im Neuenheimer Feld 270, 69221 Heidelberg, Germany
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204
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Oliver-Meseguer J, Leyva-Pérez A, Corma A. Very Small (3-6 Atoms) Gold Cluster Catalyzed Carbon-Carbon and Carbon-Heteroatom Bond-Forming Reactions in Solution. ChemCatChem 2013. [DOI: 10.1002/cctc.201300695] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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205
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Yu YF, Shu C, Shen CH, Li TY, Ye LW. Gold-Catalyzed Tandem Cycloisomerization and Dimerization of Chiral Homopropargyl Sulfonamides. Chem Asian J 2013; 8:2920-4. [DOI: 10.1002/asia.201301058] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Indexed: 01/13/2023]
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206
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Ohno H. Gold-Catalyzed Cascade Reactions of Alkynes for Construction of Polycyclic Compounds. Isr J Chem 2013. [DOI: 10.1002/ijch.201300054] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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207
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Hase S, Kayaki Y, Ikariya T. NHC–Gold(I) Complexes as Effective Catalysts for the Carboxylative Cyclization of Propargylamines with Carbon Dioxide. Organometallics 2013. [DOI: 10.1021/om400949m] [Citation(s) in RCA: 107] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Shun Hase
- Department
of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
| | - Yoshihito Kayaki
- Department
of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
| | - Takao Ikariya
- Department
of Applied Chemistry, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama 2-12-1-E4-1, Meguro-ku, Tokyo 152-8552, Japan
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208
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Stereoselective synthesis of benzofulvenes via a palladium-catalyzed cyclization of 1,3-dienes derived from Morita–Baylis–Hillman adducts. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.08.053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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209
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Brooner REM, Widenhoefer RA. Kationische, zweifach koordinierte Gold-π-Komplexe. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303468] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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210
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Brooner REM, Widenhoefer RA. Cationic, Two-Coordinate Gold π Complexes. Angew Chem Int Ed Engl 2013; 52:11714-24. [DOI: 10.1002/anie.201303468] [Citation(s) in RCA: 156] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2013] [Indexed: 12/16/2022]
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211
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Ung G, Bertrand G. β- and α-Hydride Abstraction in Gold(I) Alkyl Complexes. Angew Chem Int Ed Engl 2013; 52:11388-91. [DOI: 10.1002/anie.201306550] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 08/20/2013] [Indexed: 02/01/2023]
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212
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213
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Rubial B, Ballesteros A, González JM. Gold(I)-Catalyzed Bis-Alkynylation Reaction of Aromatic Aldehydes with Alkynylsilanes. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300578] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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214
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Somai Magar KB, Lee YR. Synthesis of Diverse Indene Derivatives from 1-Diazonaphthalen-2(1H)-ones via Thermal Cascade Reactions. Org Lett 2013; 15:4288-91. [DOI: 10.1021/ol4019908] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 712-749, Republic of Korea
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215
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Grirrane A, Garcia H, Corma A, Álvarez E. Air-Stable, Dinuclear and Tetranuclear σ,π-Acetylide Gold(I) Complexes and Their Catalytic Implications. Chemistry 2013; 19:12239-44. [DOI: 10.1002/chem.201301623] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Indexed: 11/10/2022]
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216
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Hung HH, Liao YC, Liu RS. Oxidant-Dependent Chemoselectivity in the Gold-Catalyzed Oxidative Cyclizations of 3,4,6,6-Tetrasubstituted 3,5-Dien-1-ynes. J Org Chem 2013; 78:7970-6. [DOI: 10.1021/jo401161h] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hsiao-Hua Hung
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, ROC
| | - Yi-Ching Liao
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, ROC
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan, ROC
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217
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Weber D, Gagné MR. σ-π-Diauration as an alternative binding mode for digold intermediates in gold(i) catalysis. Chem Sci 2013; 47:335-338. [PMID: 23914295 PMCID: PMC3729438 DOI: 10.1039/c2sc21281a] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
While investigating the gold(i)-catalyzed intramolecular hydroarylation of allenes, the structure of a digoldvinyl intermediate was verified. Instead of the previously proposed geminally diaurated binding mode for the digold when L = PPh3, an alternative σ-π-diauration mode was observed with the bulkier ligand L = P(o-Tol)3. Reactivity studies indicate the σ-π-mode has a disproportionate effect on protonolysis reactivity.
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Affiliation(s)
- Dieter Weber
- Caudill Laboratories, Department of Chemistry, University of North Carolina at Chapel Hill, NC 27599, USA
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218
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Oonishi Y, Gómez-Suárez A, Martin AR, Nolan SP. Hydrophenoxylation of Alkynes by Cooperative Gold Catalysis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304182] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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219
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Oonishi Y, Gómez-Suárez A, Martin AR, Nolan SP. Hydrophenoxylation of Alkynes by Cooperative Gold Catalysis. Angew Chem Int Ed Engl 2013; 52:9767-71. [DOI: 10.1002/anie.201304182] [Citation(s) in RCA: 114] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Indexed: 11/11/2022]
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220
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Wang T, Shi S, Vilhelmsen MH, Zhang T, Rudolph M, Rominger F, Hashmi ASK. Chemoselectivity Control: Gold(I)-Catalyzed Synthesis of 6,7-Dihydrobenzofuran-4(5H)-ones and Benzofurans from 1-(Alkynyl)-7-oxabicyclo[4.1.0]heptan-2-ones. Chemistry 2013; 19:12512-6. [DOI: 10.1002/chem.201301698] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2013] [Indexed: 12/16/2022]
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221
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Kung KKY, Lo VKY, Ko HM, Li GL, Chan PY, Leung KC, Zhou Z, Wang MZ, Che CM, Wong MK. Cyclometallated Gold(III) Complexes as Effective Catalysts for Synthesis of Propargylic Amines, Chiral Allenes and Isoxazoles. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300005] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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222
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Oh CH, Kim JH, Piao L, Yu J, Kim SY. Gold carbenes from substituted propargyl acetates: intramolecular ene-type reactions to 2-acetoxynaphthalene derivatives. Chemistry 2013; 19:10501-5. [PMID: 23794486 DOI: 10.1002/chem.201301384] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Indexed: 11/09/2022]
Affiliation(s)
- Chang Ho Oh
- Department of Chemistry and Research Institute for Natural Science, Hanyang University, Sungdong-Gu, Seoul 133-791, Korea
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223
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Wang Y, Yepremyan A, Ghorai S, Todd R, Aue DH, Zhang L. Gold-catalyzed cyclizations of cis-enediynes: insights into the nature of gold-aryne interactions. Angew Chem Int Ed Engl 2013; 52:7795-9. [PMID: 23788447 DOI: 10.1002/anie.201301057] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 05/06/2013] [Indexed: 12/19/2022]
Abstract
Golden aryne? Gold aryne complexes are inferred as transition states in dual gold-catalyzed cyclizations of cis-enediynes (see scheme; DCE = 1,2-dichloroethane). They are better described as ortho-aurophenyl cations, which react with weak nucleophiles and undergo facile intramolecular insertions into C(sp(3))-H bonds. Indanes, fused heteroarenes, and phenol derivatives are readily prepared using this method.
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Affiliation(s)
- Youliang Wang
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, USA
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224
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Wang Y, Yepremyan A, Ghorai S, Todd R, Aue DH, Zhang L. Gold-Catalyzed Cyclizations ofcis-Enediynes: Insights into the Nature of Gold-Aryne Interactions. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301057] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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225
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226
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Rao W, Koh MJ, Li D, Hirao H, Chan PWH. Gold-catalyzed cycloisomerization of 1,6-diyne carbonates and esters to 2,4a-dihydro-1H-fluorenes. J Am Chem Soc 2013; 135:7926-32. [PMID: 23627597 DOI: 10.1021/ja4032727] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A synthetic method to prepare 2,4a-dihydro-1H-fluorenes efficiently from gold(I)-catalyzed 1,2-acyloxy migration/cyclopropenation/Nazarov cyclization of 1,6-diyne carbonates and esters is described. The suggested reaction pathway provides rare examples of [2,3]-sigmatropic rearrangement in this class of compounds as well as the involvement of an in situ formed cyclopropene intermediate in gold catalysis. Experimental and ONIOM(QM:QM') [our own n-layered integrated molecular orbital and molecular mechanics(quantum mechanics:quantum mechanics')] computational studies based on the proposed Au carbenoid species provide insight into this unique selectivity.
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Affiliation(s)
- Weidong Rao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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227
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Cabrero-Antonino JR, Leyva-Pérez A, Corma A. Iron(III) Triflimide as a Catalytic Substitute for Gold(I) in Hydroaddition Reactions to Unsaturated Carbon-Carbon Bonds. Chemistry 2013; 19:8627-33. [DOI: 10.1002/chem.201300386] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2013] [Indexed: 11/10/2022]
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228
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Nösel P, Lauterbach T, Rudolph M, Rominger F, Hashmi ASK. Gold-catalyzed synthesis of iodofulvenes. Chemistry 2013; 19:8634-41. [PMID: 23653259 DOI: 10.1002/chem.201300507] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 03/29/2013] [Indexed: 01/09/2023]
Abstract
We report the gold-catalyzed synthesis of highly functionalized iodofulvenes from iododialkynes under mild conditions. The catalytic cycle involves the formation of gold acetylides and vinylgold intermediates. These intermediates can then undergo an unprecedented iodine/gold exchange. This new pathway for catalyst transfer in dual gold catalysis opens up the possibility of highly regioselective transformations directed by the gold in the organogold intermediates. The resulting products are well suited for further metal-mediated coupling reactions, allowing the synthesis of extended π-systems.
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Affiliation(s)
- Pascal Nösel
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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229
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Mohamed RK, Peterson PW, Alabugin IV. Concerted Reactions That Produce Diradicals and Zwitterions: Electronic, Steric, Conformational, and Kinetic Control of Cycloaromatization Processes. Chem Rev 2013; 113:7089-129. [DOI: 10.1021/cr4000682] [Citation(s) in RCA: 166] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Rana K. Mohamed
- Department of Chemistry
and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Paul W. Peterson
- Department of Chemistry
and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
| | - Igor V. Alabugin
- Department of Chemistry
and Biochemistry, Florida State University, Tallahassee, Florida 32306-4390,
United States
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230
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Brooner REM, Brown TJ, Widenhoefer RA. Synthesis and study of cationic, two-coordinate triphenylphosphine-gold-π complexes. Chemistry 2013; 19:8276-84. [PMID: 23592521 DOI: 10.1002/chem.201204564] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Indexed: 11/11/2022]
Abstract
Cationic, two-coordinate triphenylphosphine-gold(I)-π complexes of the form [(PPh₃)Au(π ligand)]⁺SbF₆⁻ (π ligand=4-methylstyrene, 1∙SbF₆), 2-methyl-2-butene (3∙SbF₆), 3-hexyne (6∙SbF₆), 1,3-cyclohexadiene (7∙SbF₆), 3-methyl-1,2-butadiene (8∙SbF₆), and 1,7-diphenyl-3,4-heptadiene (10∙SbF₆) were generated in situ from reaction of [(PPh₃)AuCl], AgSbF₆, and π ligand at -78 °C and were characterized by low-temperature, multinuclear NMR spectroscopy without isolation. The π ligands of these complexes were both weakly bound and kinetically labile and underwent facile intermolecular exchange with free ligand (ΔG(≠) ≈9 kcal mol(-1) in the case of 6∙SbF₆) and competitive displacement by weak σ donors, such as trifluoromethane sulfonate. Triphenylphosphine-gold(I)-π complexes were thermally unstable and decomposed above -20 °C to form the bis(triphenylphosphine) gold cation [(PPh₃)₂Au]⁺SbF₆⁻ (2∙SbF₆).
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Affiliation(s)
- Rachel E M Brooner
- Department of Chemistry, Duke University, French Family Science Center, Durham, NC 27708, USA
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231
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Zhdanko A, Maier ME. Quantitative Evaluation of the Stability of gem-Diaurated Species in Reactions with Nucleophiles. Organometallics 2013. [DOI: 10.1021/om400083f] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Alexander Zhdanko
- Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle
18, 72076 Tübingen, Germany
| | - Martin E. Maier
- Institut für Organische Chemie, Universität Tübingen, Auf der Morgenstelle
18, 72076 Tübingen, Germany
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232
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Obradors C, Echavarren AM. Intermolecular Gold-Catalyzed Cycloaddition of Alkynes with Oxoalkenes. Chemistry 2013; 19:3547-51. [DOI: 10.1002/chem.201300131] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Indexed: 11/09/2022]
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233
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Kloeckner U, Finkbeiner P, Nachtsheim BJ. Iodide-catalyzed halocyclization/cycloaddition/elimination cascade reaction. J Org Chem 2013; 78:2751-6. [PMID: 23373844 DOI: 10.1021/jo302676g] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
An iodocyclization reaction of o-alkynylphenyl carboxaldehydes is reported that is truly catalytic with respect to the electrophilic iodine source. With a combination of tetrabutylammonium iodide (TBAI), Oxone as non-nucleophilic and easy to handle co-oxidant, and fluorinated protic solvents, highly substituted 1-naphthalenones could be prepared in high yields of up to 91%.
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Affiliation(s)
- Ulrich Kloeckner
- Institute of Organic Chemistry, Eberhard Karls University Tuebingen, Auf der Morgenstelle 18, D-72076 Tuebingen, Germany
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234
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Zhdanko A, Maier ME. Synthesis ofgem-Diaurated Species from Alkynols. Chemistry 2013; 19:3932-42. [DOI: 10.1002/chem.201204491] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Indexed: 11/06/2022]
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235
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Sakai K, Kochi T, Kakiuchi F. Rhodium-catalyzed intermolecular [2 + 2] cycloaddition of terminal alkynes with electron-deficient alkenes. Org Lett 2013; 15:1024-7. [PMID: 23398205 DOI: 10.1021/ol303510k] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The first catalytic intermolecular [2 + 2] cycloaddition of terminal alkynes with electron-deficient alkenes is reported. The reaction proceeds with an 8-quinolinolato rhodium/phosphine catalyst system to give cyclobutenes from various substrates having polar functional groups in high yields with complete regioselectivity.
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Affiliation(s)
- Kazunori Sakai
- Department of Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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236
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Gómez-Suárez A, Oonishi Y, Meiries S, Nolan SP. [{Au(NHC)}2(μ-OH)][BF4]: Silver-Free and Acid-Free Catalysts for Water-Inclusive Gold-Mediated Organic Transformations. Organometallics 2013. [DOI: 10.1021/om301249r] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Adrián Gómez-Suárez
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews KY16 9ST, U.K
| | - Yoshihiro Oonishi
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews KY16 9ST, U.K
| | - Sebastien Meiries
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews KY16 9ST, U.K
| | - Steven P. Nolan
- EaStCHEM School of Chemistry, University of St Andrews, St Andrews KY16 9ST, U.K
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237
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Hansmann MM, Rudolph M, Rominger F, Hashmi ASK. Mechanistic switch in dual gold catalysis of diynes: C(sp(3))-H activation through bifurcation--vinylidene versus carbene pathways. Angew Chem Int Ed Engl 2013; 52:2593-8. [PMID: 23362151 DOI: 10.1002/anie.201208777] [Citation(s) in RCA: 192] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Indexed: 01/21/2023]
Abstract
The other side of the mountain: Changing the framework of diyne systems opens up new cyclization modes for dual gold catalysis. Instead of a 5-endo cyclization and gold vinylidenes a 6-endo cyclization gives rise to gold-stabilized carbenes as key intermediates for selective C-H insertions.
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Affiliation(s)
- Max M Hansmann
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
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238
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Hansmann MM, Rudolph M, Rominger F, Hashmi ASK. Mechanistisches Umschalten bei der dualen Goldkatalyse von Diinen: C(sp3)-H-Aktivierung über Bifurkation - Vinyliden- versus Carbenreaktionswege. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208777] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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239
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Zalesskiy SS, Sedykh AE, Kashin AS, Ananikov VP. Efficient general procedure to access a diversity of gold(0) particles and gold(I) phosphine complexes from a simple HAuCl4 source. Localization of homogeneous/heterogeneous system's interface and field-emission scanning electron microscopy study. J Am Chem Soc 2013; 135:3550-9. [PMID: 23276227 DOI: 10.1021/ja311258e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Soluble gold precatalysts, aimed for homogeneous catalysis, under certain conditions may form nanoparticles, which dramatically change the mechanism and initiate different chemistry. The present study addresses the question of designing gold catalysts, taking into account possible interconversions and contamination at the homogeneous/heterogeneous system's interface. It was revealed that accurate localization of boundary experimental conditions for formation of molecular gold complexes in solution versus nucleation and growth of gold particles opens new opportunities for well-known gold chemistry. Within the developed concept, a series of practical procedures was created for efficient synthesis of soluble gold complexes with various phosphine ligands (R3P)AuCl (90-99% yield) and for preparation of different types of gold materials. The effect of the ligand on the particles growth in solution has been observed and characterized with high-resolution field-emission scanning electron microscopy (FE-SEM) study. Two unique types of nanostructured gold materials were prepared: hierarchical agglomerates and gold mirror composed of ultrafine smoothly shaped particles.
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Affiliation(s)
- Sergey S Zalesskiy
- Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow 119991, Russia
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240
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Oh CH, Kim JH, Oh BK, Park JR, Lee JH. Gold-Catalyzed Sequential Activation of Propargylic Carboxylates: A Facile Route to Benzoannulenes. Chemistry 2013; 19:2592-6. [DOI: 10.1002/chem.201204091] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2012] [Indexed: 01/02/2023]
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241
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Ung G, Soleilhavoup M, Bertrand G. Gold(III)- versus gold(I)-induced cyclization: synthesis of six-membered mesoionic carbene and acyclic (aryl)(heteroaryl) carbene complexes. Angew Chem Int Ed Engl 2013; 52:758-61. [PMID: 23169762 PMCID: PMC3712865 DOI: 10.1002/anie.201207961] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Revised: 10/25/2012] [Indexed: 12/17/2022]
Abstract
The golden state: selective 5-exo- and 6-endo-cyclizations of an alkynyl benzothioamide have been achieved. The selectivity is controlled by the oxidation state of the gold precursor (+I or +III), yielding two new types of carbene ligand: an (aryl)(heteroaryl)carbene and a six-membered mesoionic carbene. Mes=2,4,6-trimethylphenyl.
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Affiliation(s)
- Gaël Ung
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093-0343 (USA)
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093-0343 (USA)
| | - Guy Bertrand
- UCSD-CNRS Joint Research Chemistry Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, CA 92093-0343 (USA)
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242
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243
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Collado A, Gómez-Suárez A, Martin AR, Slawin AMZ, Nolan SP. Straightforward synthesis of [Au(NHC)X] (NHC = N-heterocyclic carbene, X = Cl, Br, I) complexes. Chem Commun (Camb) 2013; 49:5541-3. [DOI: 10.1039/c3cc43076f] [Citation(s) in RCA: 185] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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244
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Hou Q, Zhang Z, Kong F, Wang S, Wang H, Yao ZJ. Assembly of fused indenesvia Au(i)-catalyzed C1–C5 cyclization of enediynes bearing an internal nucleophile. Chem Commun (Camb) 2013; 49:695-7. [DOI: 10.1039/c2cc36245g] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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245
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Hansmann MM, Rominger F, Hashmi ASK. Gold–allenylidenes – an experimental and theoretical study. Chem Sci 2013. [DOI: 10.1039/c3sc22227f] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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246
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Visbal R, Laguna A, Gimeno MC. Simple and efficient synthesis of [MCI(NHC)] (M = Au, Ag) complexes. Chem Commun (Camb) 2013; 49:5642-4. [DOI: 10.1039/c3cc42919a] [Citation(s) in RCA: 100] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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247
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Young PC, Green SLJ, Rosair GM, Lee AL. Deactivation of gold(i) catalysts in the presence of thiols and amines – characterisation and catalysis. Dalton Trans 2013; 42:9645-53. [DOI: 10.1039/c3dt50653c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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248
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Celik MA, Dash C, Adiraju VAK, Das A, Yousufuddin M, Frenking G, Dias HVR. End-On and Side-On π-Acid Ligand Adducts of Gold(I): Carbonyl, Cyanide, Isocyanide, and Cyclooctyne Gold(I) Complexes Supported by N-Heterocyclic Carbenes and Phosphines. Inorg Chem 2012; 52:729-42. [DOI: 10.1021/ic301869v] [Citation(s) in RCA: 61] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Mehmet Ali Celik
- Fachbereich
Chemie, Philipps-Universität Marburg, D-35039 Marburg, Germany
| | - Chandrakanta Dash
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
| | - Venkata A. K. Adiraju
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
| | - Animesh Das
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
| | - Muhammed Yousufuddin
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
| | - Gernot Frenking
- Fachbereich
Chemie, Philipps-Universität Marburg, D-35039 Marburg, Germany
| | - H. V. Rasika Dias
- Department of Chemistry and Biochemistry, The University of Texas at Arlington, Arlington, Texas 76019-0065,
United States
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249
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Hashmi ASK, Lauterbach T, Nösel P, Vilhelmsen MH, Rudolph M, Rominger F. Dual gold catalysis: σ,π-propyne acetylide and hydroxyl-bridged digold complexes as easy-to-prepare and easy-to-handle precatalysts. Chemistry 2012; 19:1058-65. [PMID: 23255064 DOI: 10.1002/chem.201203010] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2012] [Revised: 11/25/2012] [Indexed: 01/01/2023]
Abstract
A series of dinuclear gold σ,π-propyne acetylide complexes were prepared and tested for their catalytic ability in dual gold catalysis that was based on the reaction of an electrophilic π-complex of gold with a gold acetylide. The air-stable and storable catalysts can be isolated as silver-free catalysts in their activated form. These dual catalysts allow a fast initiation phase for the dual catalytic cycles without the need for additional additives for acetylide formation. Because propyne serves as a throw-away ligand, no traces of the precatalyst are generated. Based on the fast initiation process, side products are minimized and reaction rates are higher for these catalysts. A series of test reactions were used to demonstrate the general applicability of these catalysts. Lower catalyst loadings, faster reaction rates, and better selectivity, combined with the practicability of these catalysts, make them ideal catalysts for dual gold catalysis.
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Affiliation(s)
- A Stephen K Hashmi
- Organisch-Chemisches Institut, Ruprecht-Karls-Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
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250
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Gómez-Suárez A, Dupuy S, Slawin AMZ, Nolan SP. Straightforward Synthetic Access togem-Diaurated and Digold σ,π-Acetylide Species. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201208234] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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