201
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Wiese S, McAfee JL, Pahls DR, McMullin CL, Cundari TR, Warren TH. C–H Functionalization Reactivity of a Nickel–Imide. J Am Chem Soc 2012; 134:10114-21. [DOI: 10.1021/ja302149k] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stefan Wiese
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington,
DC 20057, United States
| | - Jason L. McAfee
- Department of Chemistry, Center
for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, Denton, Texas 78203, United
States
| | - Dale R. Pahls
- Department of Chemistry, Center
for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, Denton, Texas 78203, United
States
| | - Claire L. McMullin
- Department of Chemistry, Center
for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, Denton, Texas 78203, United
States
| | - Thomas R. Cundari
- Department of Chemistry, Center
for Advanced Scientific Computing and Modeling (CASCaM), University of North Texas, Denton, Texas 78203, United
States
| | - Timothy H. Warren
- Department of Chemistry, Georgetown University, Box 571227-1227, Washington,
DC 20057, United States
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202
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Gephart RT, Huang DL, Aguila MJB, Schmidt G, Shahu A, Warren TH. Catalytic CH Amination with Aromatic Amines. Angew Chem Int Ed Engl 2012; 51:6488-92. [DOI: 10.1002/anie.201201921] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2012] [Indexed: 11/10/2022]
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203
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Gephart RT, Huang DL, Aguila MJB, Schmidt G, Shahu A, Warren TH. Catalytic CH Amination with Aromatic Amines. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201921] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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204
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Souto JA, Zian D, Muñiz K. Iodine(III)-Mediated Intermolecular Allylic Amination under Metal-Free Conditions. J Am Chem Soc 2012; 134:7242-5. [DOI: 10.1021/ja3013193] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- José A. Souto
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans
16, 43007 Tarragona, Spain
| | - Debora Zian
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans
16, 43007 Tarragona, Spain
| | - Kilian Muñiz
- Institute of Chemical Research of Catalonia (ICIQ), Av. Països Catalans
16, 43007 Tarragona, Spain
- Catalan Institution for Research and Advanced Studies (ICREA), Pg. Lluís
Companys 23, 08010 Barcelona, Spain
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205
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Ton TMU, Tejo C, Tiong DLY, Chan PWH. Copper(II) triflate catalyzed amination and aziridination of 2-alkyl substituted 1,3-dicarbonyl compounds. J Am Chem Soc 2012; 134:7344-50. [PMID: 22462638 DOI: 10.1021/ja301415k] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A method to prepare α-acyl-β-amino acid and 2,2-diacyl aziridine derivatives efficiently from Cu(OTf)(2) + 1,10-phenanthroline (1,10-phen)-catalyzed amination and aziridination of 2-alkyl substituted 1,3-dicarbonyl compounds with PhI═NTs is described. By taking advantage of the orthogonal modes of reactivity of the substrate through slight modification of the reaction conditions, a divergence in product selectivity was observed. In the presence of 1.2 equiv of the iminoiodane, amination of the allylic C-H bond of the enolic form of the substrate, formed in situ through coordination to the Lewis acidic metal catalyst, was found to selectively occur and give the β-aminated adduct. On the other hand, increasing the amount of the nitrogen source from 1.2 to 2-3 equiv was discovered to result in preferential formal aziridination of the C-C bond of the 2-alkyl substituent of the starting material and formation of the aziridine product.
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Affiliation(s)
- Thi My Uyen Ton
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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206
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Xia JB, Cormier KW, Chen C. A Highly Selective Vanadium Catalyst for Benzylic C-H Oxidation. Chem Sci 2012; 3:2240-2245. [PMID: 22712051 DOI: 10.1039/c2sc20178j] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Vanadium complexes have been used extensively to catalyze olefin and alcohol oxidation. However, their application in C-H oxidation has not been well-studied. We report herein that commercially available Cp(2)VCl(2) catalyzes benzylic C-H oxidation selectively and effectively, giving no aromatic oxidation products.
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Affiliation(s)
- Ji-Bao Xia
- Division of Chemistry, Department of Biochemistry, The University of Texas Southwestern Medical Center, Dallas, Texas, 75390, USA; ; Tel: +1 214 6485048
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207
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Takahashi K, Yamaguchi D, Ishihara J, Hatakeyama S. Total Synthesis of (−)-Kaitocephalin Based on a Rh-Catalyzed C–H Amination. Org Lett 2012; 14:1644-7. [DOI: 10.1021/ol300431n] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Keisuke Takahashi
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8521, Japan
| | - Daisuke Yamaguchi
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8521, Japan
| | - Jun Ishihara
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8521, Japan
| | - Susumi Hatakeyama
- Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, 852-8521, Japan
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208
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Catalytic functionalization of unactivated primary C-H bonds directed by an alcohol. Nature 2012; 483:70-3. [PMID: 22382981 DOI: 10.1038/nature10785] [Citation(s) in RCA: 337] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 12/13/2011] [Indexed: 12/23/2022]
Abstract
New synthetic methods for the catalytic functionalization of C-H bonds have the potential to revolutionize the synthesis of complex molecules. However, the realization of this synthetic potential requires the ability to functionalize selectively one C-H bond in a compound containing many such bonds and an array of functional groups. The site-selective functionalization of aliphatic C-H bonds is one of the greatest challenges that must be met for C-H bond functionalization to be used widely in complex-molecule synthesis, and processes catalysed by transition-metals provide the opportunity to control selectivity. Current methods for catalytic, aliphatic C-H bond functionalization typically rely on the presence of one inherently reactive C-H bond, or on installation and subsequent removal of directing groups that are not components of the desired molecule. To overcome these limitations, we sought catalysts and reagents that would facilitate aliphatic C-H bond functionalization at a single site, with chemoselectivity derived from the properties of the catalyst and site-selectivity directed by common functional groups contained in both the reactant and the desired product. Here we show that the combination of an iridium-phenanthroline catalyst and a dihydridosilane reagent leads to the site-selective γ-functionalization of primary C-H bonds controlled by a hydroxyl group, the most common functional group in natural products. The scope of the reaction encompasses alcohols and ketones bearing many substitution patterns and auxiliary functional groups; this broad scope suggests that this methodology will be suitable for the site-selective and diastereoselective functionalization of complex natural products.
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209
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Michaudel Q, Thevenet D, Baran PS. Intermolecular Ritter-type C-H amination of unactivated sp3 carbons. J Am Chem Soc 2012; 134:2547-50. [PMID: 22276612 PMCID: PMC3277284 DOI: 10.1021/ja212020b] [Citation(s) in RCA: 210] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Intermolecular Ritter-type C-H amination of unactivated sp(3) carbons has been developed. This new reaction proceeds under mild conditions using readily available reagents and an inexpensive source of nitrogen (acetonitrile). A broad scope of substrates can be aminated with this method since many functional groups are tolerated. This reaction also allows for the direct, innate C-H amination of a variety of hydrocarbons such as cyclohexane without the need of prefunctionalization or installation of a directing group.
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Affiliation(s)
| | | | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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210
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Abstract
A highly selective C-H amination reaction under iron catalysis has been developed. This novel system, which employs an inexpensive, nontoxic [Fe(III)Pc] catalyst (typically used as an industrial ink additive), displays a strong preference for allylic C-H amination over aziridination and all other C-H bond types (i.e., allylic > benzylic > ethereal > 3° > 2° ≫ 1°). Moreover, in polyolefinic substrates, the site selectivity can be controlled by the electronic and steric character of the allylic C-H bond. Although this reaction is shown to proceed via a stepwise mechanism, the stereoretentive nature of C-H amination for 3° aliphatic C-H bonds suggests a very rapid radical rebound step.
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Affiliation(s)
- Shauna M Paradine
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA
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211
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McNeill E, Du Bois J. Catalytic C–H oxidation by a triazamacrocyclic ruthenium complex. Chem Sci 2012. [DOI: 10.1039/c2sc20118f] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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212
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Li Y, Liu J, Xie Y, Zhang R, Jin K, Wang X, Duan C. Nickel-catalyzed C–H direct amination of benzoxazoles with secondary amines. Org Biomol Chem 2012; 10:3715-20. [DOI: 10.1039/c2ob25425e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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213
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Alkane Catalytic Functionalization by Carbene or Nitrene Insertion Reactions. CATALYSIS BY METAL COMPLEXES 2012. [DOI: 10.1007/978-90-481-3698-8_6] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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214
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Higginbotham MCM, Bebbington MWP. Gold(i)-catalysed synthesis of cyclic sulfamidates by intramolecular allene hydroamination. Chem Commun (Camb) 2012; 48:7565-7. [DOI: 10.1039/c2cc33711h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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215
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Berry JF. The role of three-center/four-electron bonds in superelectrophilic dirhodium carbene and nitrene catalytic intermediates. Dalton Trans 2012; 41:700-13. [DOI: 10.1039/c1dt11434d] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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216
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Liu JY, Niu HY, Wu S, Qu GR, Guo HM. Metal catalyzed C(sp3)–H bond amination of 2-alkyl azaarenes with diethyl azodicarboxylate. Chem Commun (Camb) 2012; 48:9723-5. [DOI: 10.1039/c2cc35309a] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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217
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Kornecki KP, Berry JF. Dirhodium Catalysts That Bear Redox Noninnocent Chelating Dicarboxylate Ligands and Their Performance in Intra- and Intermolecular C-H Amination. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100814] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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218
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Harvey ME, Musaev DG, Du Bois J. A diruthenium catalyst for selective, intramolecular allylic C-H amination: reaction development and mechanistic insight gained through experiment and theory. J Am Chem Soc 2011; 133:17207-16. [PMID: 21981699 DOI: 10.1021/ja203576p] [Citation(s) in RCA: 255] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The mixed-valent paddlewheel complex tetrakis(2-oxypyridinato)diruthenium(II,III) chloride, [Ru(2)(hp)(4)Cl], catalyzes intramolecular allylic C-H amination with bis(homoallylic) sulfamate esters. These results stand in marked contrast to reactions performed with dirhodium catalysts, which favor aziridine products. The following discussion constitutes the first report of C-H amination using complexes such as [Ru(2)(hp)(4)Cl] and related diruthenium adducts. Computational and experimental studies implicate a mechanism for [Ru(2)(hp)(4)Cl]-promoted C-H amination involving hydrogen-atom abstraction/radical recombination and the intermediacy of a discrete, albeit short-lived, diradical species. The collective data offer a coherent model for understanding the preference of this catalyst to oxidize allylic (and benzylic) C-H bonds.
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Affiliation(s)
- Mark Edwin Harvey
- Department of Chemistry, Stanford University, Stanford, California 94305-5080, USA
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219
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Pan J, Su M, Buchwald SL. Palladium(0)-catalyzed intermolecular amination of unactivated C(sp³)-H bonds. Angew Chem Int Ed Engl 2011; 50:8647-51. [PMID: 21812078 PMCID: PMC3413323 DOI: 10.1002/anie.201102880] [Citation(s) in RCA: 148] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2011] [Revised: 05/30/2011] [Indexed: 11/05/2022]
Abstract
The Pd(0)-catalyzed intermolecular C–H amination of unactivated C(sp3)–H bonds using aryl amines as the nitrogen source is disclosed. Either the C–N cross-coupling product or the C–H amination product could be accessed selectively by adjusting the steric environment of the substrate.
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Affiliation(s)
- Jun Pan
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
| | - Mingjuan Su
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
| | - Stephen L. Buchwald
- Department of Chemistry, Room 18-490, Massachusetts Institute of Technology, Cambridge, MA 02139 (USA)
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220
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Beletskaya IP, Ananikov VP. Transition-metal-catalyzed C-S, C-Se, and C-Te bond formation via cross-coupling and atom-economic addition reactions. Chem Rev 2011; 111:1596-636. [PMID: 21391564 DOI: 10.1021/cr100347k] [Citation(s) in RCA: 1250] [Impact Index Per Article: 96.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Irina P Beletskaya
- Lomonosov Moscow State University, Chemistry Department, Vorob'evy gory, Moscow 119899, Russia.
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221
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Xia Q, Chen W, Qiu H. Direct C–N Coupling of Imidazoles and Benzylic Compounds via Iron-Catalyzed Oxidative Activation of C–H Bonds. J Org Chem 2011; 76:7577-82. [DOI: 10.1021/jo201253m] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Qinqin Xia
- Department of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028, P. R. China
| | - Wanzhi Chen
- Department of Chemistry, Zhejiang University, Xixi Campus, Hangzhou 310028, P. R. China
| | - Huayu Qiu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 310036, P. R. China
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222
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Ramirez TA, Zhao B, Shi Y. Recent advances in transition metal-catalyzed sp3 C-H amination adjacent to double bonds and carbonyl groups. Chem Soc Rev 2011; 41:931-42. [PMID: 21842094 DOI: 10.1039/c1cs15104e] [Citation(s) in RCA: 396] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Transition metal-catalyzed C-H amination at positions adjacent to double bonds and carbonyl groups is discussed in this critical review. While the focus will center on the recent developments of α-oxidative amination, some historical developments and mutually beneficial reports in the broader field of C-H amination will be discussed. C-H amination has become a viable method for the efficient installation of nitrogen atoms en route to target molecules (89 references).
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Affiliation(s)
- Thomas A Ramirez
- Department of Chemistry, Colorado State University, Fort Collins, CO 80523, USA
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223
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Pan J, Su M, Buchwald SL. Palladium(0)-Catalyzed Intermolecular Amination of Unactivated C sp 3H Bonds. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102880] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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224
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Antonchick AP, Samanta R, Kulikov K, Lategahn J. Organokatalytische, oxidative, intramolekulare C-H-Bindungsaminierung und metallfreie Kreuzaminierung nichtaktivierter Arene bei Raumtemperatur. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201102984] [Citation(s) in RCA: 112] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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225
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Antonchick AP, Samanta R, Kulikov K, Lategahn J. Organocatalytic, Oxidative, Intramolecular CH Bond Amination and Metal-free Cross-Amination of Unactivated Arenes at Ambient Temperature. Angew Chem Int Ed Engl 2011; 50:8605-8. [DOI: 10.1002/anie.201102984] [Citation(s) in RCA: 335] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2011] [Revised: 05/25/2011] [Indexed: 12/29/2022]
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226
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Lian Y, Davies HML. Combined C-H functionalization/Cope rearrangement with vinyl ethers as a surrogate for the vinylogous Mukaiyama aldol reaction. J Am Chem Soc 2011; 133:11940-3. [PMID: 21739977 DOI: 10.1021/ja2051155] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Vinyl ethers selectively undergo the combined C-H functionalization/Cope rearrangement reaction via an s-cis/boat transition state. With chiral dirhodium catalysts, products are generated in a highly diastereoselective and enantioselective fashion. This reaction can be considered as a surrogate to the traditional vinylogous Mukaiyama aldol reaction. Effective kinetic resolution has been achieved, leading to the recovery of a cyclic vinyl ether with axial chirality of high enantiomeric purity.
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Affiliation(s)
- Yajing Lian
- Department of Chemistry, Emory University, 1515 Dickey Drive, Atlanta, Georgia 30322, USA
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227
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Olson DE, Maruniak A, Malhotra S, Trost BM, Du Bois J. Synthesis and reactivity of unique heterocyclic structures en route to substituted diamines. Org Lett 2011; 13:3336-9. [PMID: 21618989 PMCID: PMC3123413 DOI: 10.1021/ol2010769] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Rhodium-catalyzed oxidative cyclization of allylic hydroxylamine-derived sulfamate esters furnishes a novel family of bicyclic aziridines that serve as functional precursors to substituted diamines. Investigations with the N4-Troc form of these heterocycles have led to manifold improvements in reaction performance and scope and have revealed unique differences in the stability and reactivity of such compounds dictated by the choice of N4-protecting group.
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Affiliation(s)
- David E. Olson
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080 (USA)
| | - Autumn Maruniak
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080 (USA)
| | - Sushant Malhotra
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080 (USA)
| | - Barry M. Trost
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080 (USA)
| | - J. Du Bois
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080 (USA)
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228
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Li Y, Xie Y, Zhang R, Jin K, Wang X, Duan C. Copper-Catalyzed Direct Oxidative C–H Amination of Benzoxazoles with Formamides or Secondary Amines under Mild Conditions. J Org Chem 2011; 76:5444-9. [DOI: 10.1021/jo200447x] [Citation(s) in RCA: 133] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yaming Li
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Yusheng Xie
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Rong Zhang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Kun Jin
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Xiuna Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Chunying Duan
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
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229
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C–H amination/cyclocarbonylation of allene carbamates: a versatile platform for the synthesis of α,β-unsaturated γ-lactams. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.03.026] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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230
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Stokes BJ, Driver TG. Transition Metal‐Catalyzed Formation of N‐Heterocycles via Aryl‐ or Vinyl C–H Bond Amination. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100150] [Citation(s) in RCA: 171] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Benjamin J. Stokes
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607, USA
| | - Tom G. Driver
- Department of Chemistry, University of Illinois at Chicago, 845 W. Taylor St., Chicago, IL 60607, USA
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231
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Kornecki KP, Berry JF. Evidence for a one-electron mechanistic regime in dirhodium-catalyzed intermolecular C-H amination. Chemistry 2011; 17:5827-32. [PMID: 21506189 DOI: 10.1002/chem.201100708] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2011] [Indexed: 11/12/2022]
Abstract
Swift and energy efficient conversion of chemical feedstocks to pharmaceuticals and agrochemicals requires the development of new methods to add nitrogen functionality to unfunctionalized organic substrates. Dirhodium-catalyzed insertion of nitrene species into C-H bonds is a promising new method, the main drawback of which is the currently limited understanding of the catalytic mechanism. Herein, cyclic voltammetry and controlled potential electrolysis measurements have enabled us to solve many of the mechanistic mysteries of intermolecular C-H amination catalyzed by [Rh(2)(esp)(2)] (esp=α,α,α',α'-tetramethyl-1,3-benzenedipropanoate). The primary result is that, in addition to a simple nitrene-transfer mechanism that dominates the early stages of the reaction, another mechanism is available that relies on sequential proton-coupled electron transfer steps. Whereas the nitrene-transfer mechanism requires the use of expensive, atom-inefficient oxidants, we show that simple one-electron oxidants such as Ce(4+) may be used to achieve catalytic C-H amination via the one-electron mechanistic regime.
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Affiliation(s)
- Katherine P Kornecki
- Department of Chemistry, University of Wisconsin, 1101 University Avenue, Madison, WI 53706, USA
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232
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King ER, Hennessy ET, Betley TA. Catalytic C−H Bond Amination from High-Spin Iron Imido Complexes. J Am Chem Soc 2011; 133:4917-23. [DOI: 10.1021/ja110066j] [Citation(s) in RCA: 366] [Impact Index Per Article: 28.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Evan R. King
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Elisabeth T. Hennessy
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Theodore A. Betley
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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233
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Collet F, Lescot C, Dauban P. Catalytic C-H amination: the stereoselectivity issue. Chem Soc Rev 2011; 40:1926-36. [PMID: 21234469 DOI: 10.1039/c0cs00095g] [Citation(s) in RCA: 519] [Impact Index Per Article: 39.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Catalytic C-H amination has recently emerged as a unique tool for the synthesis of amines. This tutorial review highlights the existing protocols catalyzed by metal complexes (rhodium, copper, ruthenium, manganese and palladium) allowing diastereo- and enantioselective C-H amination. Substrate-, catalyst- and reagent-controlled methodologies are detailed. They involve either catalytic nitrene C-H insertion or C-H activation.
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Affiliation(s)
- Florence Collet
- Institut de Chimie des Substances Naturelles, UPR 2301 CNRS, Centre de Recherches de Gif, Gif-sur-Yvette, France
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234
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Lu H, Jiang H, Hu Y, Wojtas L, Zhang XP. Chemoselective intramolecular allylic C–H amination versus CC aziridination through Co(ii)-based metalloradical catalysis. Chem Sci 2011. [DOI: 10.1039/c1sc00366f] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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235
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Radicals in transition metal catalyzed reactions? transition metal catalyzed radical reactions?: a fruitful interplay anyway: part 3: catalysis by group 10 and 11 elements and bimetallic catalysis. Top Curr Chem (Cham) 2011; 320:323-451. [PMID: 22143611 DOI: 10.1007/128_2011_288] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This review summarizes the current status of transition metal catalyzed reactions involving radical intermediates in organic chemistry. This part focuses on radical-based methods catalyzed by group 10 and group 11 metal complexes. Reductive and redox-neutral C-C bond formations catalyzed by low-valent metal complexes as well as catalytic oxidative methods are reviewed. Catalytic processes which rely on the combination of two metal complexes are also covered.
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236
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Wiese S, Badiei YM, Gephart RT, Mossin S, Varonka MS, Melzer MM, Meyer K, Cundari TR, Warren TH. Catalytic CH Amination with Unactivated Amines through Copper(II) Amides. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003676] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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237
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Wiese S, Badiei YM, Gephart RT, Mossin S, Varonka MS, Melzer MM, Meyer K, Cundari TR, Warren TH. Catalytic CH Amination with Unactivated Amines through Copper(II) Amides. Angew Chem Int Ed Engl 2010; 49:8850-5. [DOI: 10.1002/anie.201003676] [Citation(s) in RCA: 141] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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238
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Llaveria J, Beltrán Á, Díaz-Requejo MM, Matheu MI, Castillón S, Pérez PJ. Efficient Silver-Catalyzed Regio- and Stereospecific Aziridination of Dienes. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201003167] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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239
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Llaveria J, Beltrán Á, Díaz-Requejo MM, Matheu MI, Castillón S, Pérez PJ. Efficient Silver-Catalyzed Regio- and Stereospecific Aziridination of Dienes. Angew Chem Int Ed Engl 2010; 49:7092-5. [DOI: 10.1002/anie.201003167] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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240
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Fructos MR, Alvarez E, Díaz-Requejo MM, Pérez PJ. Selective synthesis of N-substituted 1,2-dihydropyridines from furans by copper-induced concurrent tandem catalysis. J Am Chem Soc 2010; 132:4600-7. [PMID: 20230037 DOI: 10.1021/ja1006614] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel transformation in which mono- or dialkyl-substituted furans are converted into 1,2-dihydropyridines upon reaction with PhI horizontal lineNTs at room temperature is reported. The reaction is catalyzed by complexes of general formula Tp(x)M (M = Cu, Ag) and consists of a one-pot procedure with four consecutive catalytic cycles. Furan aziridination is followed by aziridine ring-opening, transimination reaction, inverse-electronic-demand aza-Diels-Alder reaction, and a final hydrogen elimination reaction. The mechanism of the overall transformation is proposed where the metal complex displays a crucial role along the reaction pathway.
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Affiliation(s)
- Manuel R Fructos
- Laboratorio de Catalisis Homogenea, Departamento de Quimica y Ciencia de los Materiales, Unidad Asociada al CSIC, Campus de El Carmen s/n, Universidad de Huelva, 21007-Huelva, Spain
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