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Yamashita K, Tabata Y, Yamakawa K, Mochizuki T, Matsui K, Hatano M, Ishihara K. Chiral Macrocyclic Catalysts for the Enantioselective Addition of Lithium Acetylides to Ketones. J Am Chem Soc 2023; 145:26238-26248. [PMID: 37924326 DOI: 10.1021/jacs.3c08905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2023]
Abstract
Alkynyl addition to carbonyl compounds is a valuable synthetic method for the preparation of versatile chiral alcohols that are widely found in pharmaceuticals and natural products. Although a variety of enantioselective variations have been reported, alkynyl addition to simple ketones remains an unmet challenge due to their low reactivity and difficult enantiofacial discrimination. Here, we report a method for the catalytic enantioselective addition of lithium acetylide to a variety of ketones using macrocyclic lithium binaphtholates as catalysts. These reactions generally suffer from facile aggregation of lithium species, which leads to less active and selective catalysts. The macrocyclic structure designed in this study prevents such aggregation, affording a monomeric and highly active catalyst that can furnish enantioenriched tertiary alcohols from a variety of ketones within 5-30 min. Moreover, the confined cavity and lipophilicity of the macrocycle confer substrate specificity on the system, demonstrating a multiselectivity similar to that of enzymatic reactions. Thus, these findings offer new insights into the rational design of small-molecule artificial enzymes that exhibit high levels of reactivity and multiselectivity.
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Affiliation(s)
- Kenji Yamashita
- School of Pharmaceutical Sciences, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Yuji Tabata
- Graduate School of Engineering, Nagoya University, B2-3(611) Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Katsuya Yamakawa
- Graduate School of Engineering, Nagoya University, B2-3(611) Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Takuya Mochizuki
- Graduate School of Engineering, Nagoya University, B2-3(611) Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Kai Matsui
- Graduate School of Engineering, Nagoya University, B2-3(611) Furo-cho, Chikusa, Nagoya 464-8603, Japan
| | - Manabu Hatano
- Faculty of Pharmaceutical Sciences, Kobe Pharmaceutical University, 4-19-1, Motoyamakita-machi, Higashinada, Kobe 658-8558, Japan
| | - Kazuaki Ishihara
- Graduate School of Engineering, Nagoya University, B2-3(611) Furo-cho, Chikusa, Nagoya 464-8603, Japan
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2
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Weisheim E, Weigel S, Neumann B, Stammler HG, Mitzel NW. Trifunctional organometallic frameworks and cages based on all-cis-1,3,5-triethynyl-1,3,5-trisilacyclohexanes. Chem Commun (Camb) 2019; 55:4985-4988. [PMID: 30968089 DOI: 10.1039/c9cc02315a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
All-cis-1,3,5-triethynyl-1,3,5-triorganyl-1,3,5-trisilacyclohexanes (organyl R = Me, Ph) offer flexible scaffolds with three concordantly oriented ethynyl groups. Lithiation with n-BuLi affords the dimeric {[CH2Si(R)(C2Li)]3(THF)3}2 with a drum-like structure in high yields. They can be transformed into other trinuclear organometallic derivatives like the trimercury cage species [CH2Si(R)C2HgC2(R)SiCH2]3.
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Affiliation(s)
- Eugen Weisheim
- Lehrstuhl für Anorganische Chemie und Strukturchemie and Centrum für Molekulare Materialien CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany.
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3
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Zhou Y, Jermaks J, Keresztes I, MacMillan SN, Collum DB. Pseudophedrine-Derived Myers Enolates: Structures and Influence of Lithium Chloride on Reactivity and Mechanism. J Am Chem Soc 2019; 141:5444-5460. [PMID: 30896939 PMCID: PMC7079698 DOI: 10.1021/jacs.9b00328] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The structures and reactivities of pseudoephedrine-derived dianionic Myers enolates are examined. A combination of NMR and IR spectroscopic, crystallographic, and computational data reveal that the homoaggregated dianions form octalithiated tetramers displaying S4-symmetric Li8O8 cores and overall C2 symmetry. Computational and isotopic labeling studies reveal strong N-Li contacts in the carboxamide enolate moiety. The method of continuous variations proves deceptive, as octalithiated tetrameric homoaggregates afford hexalithiated trimeric heteroaggregates. A lithium diisopropylamide-lithium enolate mixed aggregate is found to be a C2-symmetric hexalithiated species incorporating two enolate dianions and two lithium diisopropylamide (LDA) subunits. Structural and rate studies show that lithium chloride has little effect on the dynamics of the enolate homoaggregates but forms adducts of unknown structure. Rate studies of alkylations indicate that the aging of the aggregates can have effects spanning orders of magnitude. The LiCl-enolate adduct dramatically accelerates the reaction but requires superstoichiometric quantities owing to putative autoinhibition. Efforts and progress toward eliminating the requisite large excess of LiCl are discussed.
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Affiliation(s)
- Yuhui Zhou
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell
University, Ithaca, New York 14853–1301
| | - Janis Jermaks
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell
University, Ithaca, New York 14853–1301
| | - Ivan Keresztes
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell
University, Ithaca, New York 14853–1301
| | - Samantha N. MacMillan
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell
University, Ithaca, New York 14853–1301
| | - David B. Collum
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell
University, Ithaca, New York 14853–1301
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4
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Grote V, Neudörfl JM, Goldfuss B. Enantiopure Methyl- and Phenyllithium: Mixed (Carb-)Anionic Anisyl Fencholate-Aggregates. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vanessa Grote
- Department of Chemistry, University of Cologne, Greinstrasse 4−6, 50939 Cologne, Germany
| | - Jörg-Martin Neudörfl
- Department of Chemistry, University of Cologne, Greinstrasse 4−6, 50939 Cologne, Germany
| | - Bernd Goldfuss
- Department of Chemistry, University of Cologne, Greinstrasse 4−6, 50939 Cologne, Germany
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5
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Kobayashi D, Miura M, Toriyama M, Motohashi S. Stereoselective synthesis of secondary and tertiary propargylic alcohols induced by a chiral sulfoxide auxiliary. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2018.11.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Jermaks J, Tallmadge EH, Keresztes I, Collum DB. Lithium Amino Alkoxide-Evans Enolate Mixed Aggregates: Aldol Addition with Matched and Mismatched Stereocontrol. J Am Chem Soc 2018; 140:3077-3090. [PMID: 29457718 PMCID: PMC6059615 DOI: 10.1021/jacs.7b13776] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Building on structural and mechanistic studies of lithiated enolates derived from acylated oxazolidinones (Evans enolates) and chiral lithiated amino alkoxides, we found that amino alkoxides amplify the enantioselectivity of aldol additions. The pairing of enantiomeric series affords matched and mismatched stereoselectivities. The structures of mixed tetramers showing 2:2 and 3:1 (alkoxide-rich) stoichiometries are determined spectroscopically. Rate and computational studies provide a viable mechanistic and stereochemical model based on the direct reaction of the 3:1 mixed tetramers, but they raise unanswered questions for the 2:2 mixed aggregates.
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Affiliation(s)
- Janis Jermaks
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301
| | - Evan H. Tallmadge
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301
| | - Ivan Keresztes
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301
| | - David B. Collum
- Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, New York 14853-1301
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7
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Borrego LG, Recio R, Alcarranza M, Khiar N, Fernández I. An Efficient and Practical Method for the Enantioselective Synthesis of Tertiary Trifluoromethyl Carbinols. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701212] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Lorenzo G. Borrego
- Departamento de Química Orgánica y Farmacéutica; Universidad de Sevilla. C/; Profesor García González 2 41012 Seville Spain
| | - Rocío Recio
- Departamento de Química Orgánica y Farmacéutica; Universidad de Sevilla. C/; Profesor García González 2 41012 Seville Spain
| | - Manuel Alcarranza
- Departamento de Química Orgánica y Farmacéutica; Universidad de Sevilla. C/; Profesor García González 2 41012 Seville Spain
| | - Noureddine Khiar
- Departamento de Química Orgánica y Biológica, Instituto de Investigaciones Químicas (IIQ); C.S.I.C-Universidad de Sevilla. C/; Américo Vespucio 49 41092 Seville Spain
| | - Inmaculada Fernández
- Departamento de Química Orgánica y Farmacéutica; Universidad de Sevilla. C/; Profesor García González 2 41012 Seville Spain
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8
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Zheng Y, Zhang L, Meggers E. Catalytic Enantioselective Synthesis of Key Propargylic Alcohol Intermediates of the Anti-HIV Drug Efavirenz. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.7b00376] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Yu Zheng
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Lilu Zhang
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Strasse 4, 35043 Marburg, Germany
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9
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Morisaki K, Morimoto H, Mashima K, Ohshima T. Development of Direct Enantioselective Alkynylation of α-Ketoester and α-Ketiminoesters Catalyzed by Phenylbis(oxazoline)Rh(III) Complexes. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.226] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
| | | | | | - Takashi Ohshima
- Graduate School of Pharmaceutical Sciences, Kyushu University
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10
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11
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Zheng Y, Harms K, Zhang L, Meggers E. Enantioselective Alkynylation of 2-Trifluoroacetyl Imidazoles Catalyzed by Bis-Cyclometalated Rhodium(III) Complexes Containing Pinene-Derived Ligands. Chemistry 2016; 22:11977-81. [DOI: 10.1002/chem.201602372] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2016] [Indexed: 12/28/2022]
Affiliation(s)
- Yu Zheng
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Klaus Harms
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Lilu Zhang
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
| | - Eric Meggers
- Fachbereich Chemie; Philipps-Universität Marburg; Hans-Meerwein-Straße 4 35043 Marburg Germany
- College of Chemistry and Chemical Engineering; Xiamen University; Xiamen 361005 P. R. China
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12
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Morisaki K, Sawa M, Yonesaki R, Morimoto H, Mashima K, Ohshima T. Mechanistic Studies and Expansion of the Substrate Scope of Direct Enantioselective Alkynylation of α-Ketiminoesters Catalyzed by Adaptable (Phebox)Rhodium(III) Complexes. J Am Chem Soc 2016; 138:6194-203. [PMID: 27092817 DOI: 10.1021/jacs.6b01590] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Mechanistic studies and expansion of the substrate scope of direct enantioselective alkynylation of α-ketiminoesters catalyzed by adaptable (phebox)rhodium(III) complexes are described. The mechanistic studies revealed that less acidic alkyne rather than more acidic acetic acid acted as a proton source in the catalytic cycle, and the generation of more active (acetato-κ(2)O,O')(alkynyl)(phebox)rhodium(III) complexes from the starting (diacetato)rhodium(III) complexes limited the overall reactivity of the reaction. These findings, as well as facile exchange of the alkynyl ligand on the (alkynyl)rhodium(III) complexes led us to use (acetato-κ(2)O,O')(trimethylsilylethynyl)(phebox)rhodium(III) complexes as a general precatalyst for various (alkynyl)rhodium(III) complexes. Use of the (trimethylsilylethynyl)rhodium(III) complexes as precatalysts enhanced the catalytic performance of the reactions with an α-ketiminoester derived from ethyl trifluoropyruvate at a catalyst loading as low as 0.5 mol % and expanded the substrate scope to unprecedented α-ketiminophosphonate and cyclic N-sulfonyl α-ketiminoesters.
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Affiliation(s)
- Kazuhiro Morisaki
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
| | - Masanao Sawa
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
| | - Ryohei Yonesaki
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
| | - Hiroyuki Morimoto
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University , Toyonaka, Osaka 560-8531, Japan
| | - Takashi Ohshima
- Graduate School of Pharmaceutical Sciences, Kyushu University , Fukuoka 812-8582, Japan
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13
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Chen Q, Tang Y, Huang T, Liu X, Lin L, Feng X. Copper/Guanidine-Catalyzed Asymmetric Alkynylation of Isatins. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600711] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Quangang Chen
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Yu Tang
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Tianyu Huang
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin 300072 China
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14
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Chen Q, Tang Y, Huang T, Liu X, Lin L, Feng X. Copper/Guanidine-Catalyzed Asymmetric Alkynylation of Isatins. Angew Chem Int Ed Engl 2016; 55:5286-9. [DOI: 10.1002/anie.201600711] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Indexed: 11/08/2022]
Affiliation(s)
- Quangang Chen
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Yu Tang
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Tianyu Huang
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology; Ministry of Education, College of Chemistry; Sichuan University; Chengdu 610064 China
- Collaborative Innovation Center of Chemical Science and Engineering; Tianjin 300072 China
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15
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Zheng Y, Ma H, Ma JA. Catalytic Enantioselective 1,2-Addition of Terminal 1,3-Diynes to Trifluoromethyl Ketones. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201500901] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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16
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Barozzino-Consiglio G, Yuan Y, Fressigné C, Harrison-Marchand A, Oulyadi H, Maddaluno J. Enantioselective Alkynylation of Aldehydes by Mixed Aggregates of 3-Aminopyrrolidine Lithium Amides and Lithium Acetylides. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00647] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gabriella Barozzino-Consiglio
- Normandie Université, Laboratoire COBRA, UMR 6014 & FR 3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Yi Yuan
- Normandie Université, Laboratoire COBRA, UMR 6014 & FR 3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Catherine Fressigné
- Normandie Université, Laboratoire COBRA, UMR 6014 & FR 3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Anne Harrison-Marchand
- Normandie Université, Laboratoire COBRA, UMR 6014 & FR 3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Hassan Oulyadi
- Normandie Université, Laboratoire COBRA, UMR 6014 & FR 3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
| | - Jacques Maddaluno
- Normandie Université, Laboratoire COBRA, UMR 6014 & FR 3038 CNRS, Université de Rouen, INSA de Rouen, 76821 Mont-Saint-Aignan Cedex, France
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17
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Li S, Ma JA. Core-structure-inspired asymmetric addition reactions: enantioselective synthesis of dihydrobenzoxazinone- and dihydroquinazolinone-based anti-HIV agents. Chem Soc Rev 2015; 44:7439-48. [DOI: 10.1039/c5cs00342c] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
An overview of the asymmetric synthesis of dihydrobenzoxazinone- and dihydroquinazolinone-based anti-HIV agents (Efavirenz, DPC 961, DPC 963, DPC 083) and analogues was presented.
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Affiliation(s)
- Shen Li
- Department of Chemistry
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
- P. R. China
| | - Jun-An Ma
- Department of Chemistry
- Tianjin University
- and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)
- Tianjin 300072
- P. R. China
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18
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Rathman T‘L, Schwindeman JA. Preparation, Properties, and Safe Handling of Commercial Organolithiums: Alkyllithiums, Lithium sec-Organoamides, and Lithium Alkoxides. Org Process Res Dev 2014. [DOI: 10.1021/op500161b] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Terry ‘Li’ Rathman
- t-Links Consulting, 3843 Gardner Park Drive, Gastonia, North Carolina 28054, United States
| | - James A. Schwindeman
- Rohner Inc., 4066 Belle
Meade Circle, Belmont, North
Carolina 28012, United States
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19
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Zhang AL, Yang LW, Yang NF, Liu DC. Investigation of catalytic activity and catalytic mechanism of chiral amino diol tridentate ligands in the asymmetric addition of aldehydes in the present of methyllithium reagent. J Organomet Chem 2014. [DOI: 10.1016/j.jorganchem.2014.06.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Kotani S, Kukita K, Tanaka K, Ichibakase T, Nakajima M. Lithium Binaphtholate-Catalyzed Asymmetric Addition of Lithium Acetylides to Carbonyl Compounds. J Org Chem 2014; 79:4817-25. [DOI: 10.1021/jo5005394] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shunsuke Kotani
- Priority
Organization for Innovation and Excellence and ‡Graduate School of Pharmaceutical
Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Kenji Kukita
- Priority
Organization for Innovation and Excellence and ‡Graduate School of Pharmaceutical
Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Kana Tanaka
- Priority
Organization for Innovation and Excellence and ‡Graduate School of Pharmaceutical
Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Tomonori Ichibakase
- Priority
Organization for Innovation and Excellence and ‡Graduate School of Pharmaceutical
Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Makoto Nakajima
- Priority
Organization for Innovation and Excellence and ‡Graduate School of Pharmaceutical
Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
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21
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Bruneau A, Liou L, Collum DB. Solution structures of lithium amino alkoxides used in highly enantioselective 1,2-additions. J Am Chem Soc 2014; 136:2885-91. [PMID: 24471766 PMCID: PMC3985715 DOI: 10.1021/ja412210d] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2013] [Indexed: 01/25/2023]
Abstract
Lithium ephedrates and norcarane-derived lithium amino alkoxides used to effect highly enantioselective 1,2-additions on large scales have been characterized in toluene and tetrahydrofuran. The method of continuous variations in conjunction with (6)Li NMR spectroscopy reveals that the lithium amino alkoxides are tetrameric. In each case, low-temperature (6)Li NMR spectra show stereoisomerically pure homoaggregates displaying resonances consistent with an S4-symmetric cubic core rather than the alternative D2d core. These assignments are supported by density functional theory computations and conform to X-ray crystal structures. Slow aggregate exchanges are discussed in the context of amino alkoxides as chiral auxiliaries.
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Affiliation(s)
- Angela
M. Bruneau
- Department of Chemistry and
Chemical Biology Baker Laboratory, Cornell
University, Ithaca, New York 14853-1301, United States
| | - Lara Liou
- Department of Chemistry and
Chemical Biology Baker Laboratory, Cornell
University, Ithaca, New York 14853-1301, United States
| | - David B. Collum
- Department of Chemistry and
Chemical Biology Baker Laboratory, Cornell
University, Ithaca, New York 14853-1301, United States
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22
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Su C, Hopson R, Williard PG. Influence of Steric Factors on Chiral Lithium Amide Aggregates. J Am Chem Soc 2014; 136:3246-55. [DOI: 10.1021/ja4123957] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chicheung Su
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912 United States
| | - Russell Hopson
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912 United States
| | - Paul G. Williard
- Department of Chemistry, Brown University, 324 Brook Street, Providence, Rhode Island 02912 United States
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23
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Ma Y, Stivala CE, Wright AM, Hayton T, Liang J, Keresztes I, Lobkovsky E, Collum DB, Zakarian A. Enediolate-dilithium amide mixed aggregates in the enantioselective alkylation of arylacetic acids: structural studies and a stereochemical model. J Am Chem Soc 2013; 135:16853-64. [PMID: 23654300 PMCID: PMC3818356 DOI: 10.1021/ja403076u] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A combination of X-ray crystallography, (6)Li, (15)N, and (13)C NMR spectroscopies, and density functional theory computations affords insight into the structures and reactivities of intervening aggregates underlying highly selective asymmetric alkylations of carboxylic acid dianions (enediolates) mediated by the dilithium salt of a C2-symmetric chiral tetraamine. Crystallography shows a trilithiated n-butyllithium-dilithiated amide that has dimerized to a hexalithiated form. Spectroscopic studies implicate the non-dimerized trilithiated mixed aggregate. Reaction of the dilithiated amide with the dilithium enediolate derived from phenylacetic acid affords a tetralithio aggregate comprised of the two dianions in solution and the dimerized octalithio form in the solid state. Computational studies shed light on the details of the solution structures and afford a highly predictive stereochemical model.
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Affiliation(s)
- Yun Ma
- Department of Chemistry and Chemical Biology Baker Laboratory, Cornell University, Ithaca, New York 14853–1301, Telephone: (607)-255-4879; Fax: (850)-644-8281
| | - Craig E. Stivala
- Contribution from the Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106; Telephone: (805)-893-3717; Fax: (805)-893-4120
| | - Ashley M. Wright
- Contribution from the Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106; Telephone: (805)-893-3717; Fax: (805)-893-4120
| | - Trevor Hayton
- Contribution from the Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106; Telephone: (805)-893-3717; Fax: (805)-893-4120
| | - Jun Liang
- Department of Chemistry and Chemical Biology Baker Laboratory, Cornell University, Ithaca, New York 14853–1301, Telephone: (607)-255-4879; Fax: (850)-644-8281
| | - Ivan Keresztes
- Department of Chemistry and Chemical Biology Baker Laboratory, Cornell University, Ithaca, New York 14853–1301, Telephone: (607)-255-4879; Fax: (850)-644-8281
| | - Emil Lobkovsky
- Department of Chemistry and Chemical Biology Baker Laboratory, Cornell University, Ithaca, New York 14853–1301, Telephone: (607)-255-4879; Fax: (850)-644-8281
| | - David B. Collum
- Department of Chemistry and Chemical Biology Baker Laboratory, Cornell University, Ithaca, New York 14853–1301, Telephone: (607)-255-4879; Fax: (850)-644-8281
| | - Armen Zakarian
- Contribution from the Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA 93106; Telephone: (805)-893-3717; Fax: (805)-893-4120
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24
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Su C, Hopson R, Williard PG. Mixed aggregates of an alkyl lithium reagent and a chiral lithium amide derived from N-ethyl-O-triisopropylsilyl valinol. J Am Chem Soc 2013; 135:14367-79. [PMID: 23980610 DOI: 10.1021/ja406912h] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The crystal structure of a mixed aggregate containing lithiated (S)-N-ethyl-3-methyl-1-(triisopropylsilyloxy)butan-2-amine derived from (S)-valinol and cyclopentyllithium is determined by X-ray diffraction. The mixed aggregate adopts a ladder structure in the solid state. The ladder-type mixed aggregate is also the major species in a toluene-d8 solution containing an approximately 1:1 molar ratio of the lithiated chiral amide to cyclopentyllithium. A variety of NMR experiments including diffusion-ordered NMR spectroscopy (DOSY) with diffusion coefficient-formula (D-FW) weight correlation analyses and other one- and two-dimensional NMR techniques allowed us to characterize the complex in solution. Solution state structures of the mixed aggregates of n-butyl, sec-butyllithium, isopropyllithium with lithiated (S)-N-ethyl-3-methyl-1-(triisopropylsilyloxy)butan-2-amine are also reported. Identical dimeric, ladder-type, mixed aggregates are the major species at a stoichiometric ratio of 1:1 lithium chiral amide to alkyllithium in toluene-d8 solution for all of the different alkyllithium reagents.
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Affiliation(s)
- Chicheung Su
- Department of Chemistry, Brown University , 324 Brook Street,Providence, Rhode Island 02912, United States
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25
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Harrison-Marchand A, Mongin F. Mixed AggregAte (MAA): A Single Concept for All Dipolar Organometallic Aggregates. 1. Structural Data. Chem Rev 2013; 113:7470-562. [DOI: 10.1021/cr300295w] [Citation(s) in RCA: 145] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anne Harrison-Marchand
- Laboratoire COBRA de l′Université de Rouen, INSA de Rouen, CNRS, UMR 6014 & FR 3038, IRCOF, Rue Tesnière, 76821 Mont St Aignan Cédex, France
| | - Florence Mongin
- Équipe Chimie et Photonique Moléculaires, Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Bâtiment 10A, case 1003, Avenue du Général Leclerc, 35042 Rennes Cédex, France
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26
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Mongin F, Harrison-Marchand A. Mixed AggregAte (MAA): A Single Concept for All Dipolar Organometallic Aggregates. 2. Syntheses and Reactivities of Homo/HeteroMAAs. Chem Rev 2013; 113:7563-727. [DOI: 10.1021/cr3002966] [Citation(s) in RCA: 149] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Florence Mongin
- Equipe Chimie et Photonique Moléculaires, Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS-Université de Rennes 1, Bât. 10A, Case 1003, Campus de Beaulieu, Avenue du Général Leclerc, 35042 Rennes Cédex, France
| | - Anne Harrison-Marchand
- Laboratoire COBRA de l′Université de Rouen, INSA de Rouen, CNRS, UMR 6014 & FR 3038, IRCOF, Rue Tesnière, 76821 Mont St Aignan Cédex, France
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27
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Reich HJ. Role of Organolithium Aggregates and Mixed Aggregates in Organolithium Mechanisms. Chem Rev 2013; 113:7130-78. [DOI: 10.1021/cr400187u] [Citation(s) in RCA: 248] [Impact Index Per Article: 22.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Hans J. Reich
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
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28
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Chiral NCN Pincer Rhodium(III) Complexes with Bis(imidazolinyl)phenyl Ligands: Synthesis and Enantioselective Catalytic Alkynylation of Trifluoropyruvates with Terminal Alkynes. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200967] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Lumbroso A, Cooke ML, Breit B. Catalytic Asymmetric Synthesis of Allylic Alcohols and Derivatives and their Applications in Organic Synthesis. Angew Chem Int Ed Engl 2013; 52:1890-932. [DOI: 10.1002/anie.201204579] [Citation(s) in RCA: 232] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2012] [Indexed: 11/09/2022]
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30
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Lumbroso A, Cooke ML, Breit B. Katalytische asymmetrische Synthese von Allylalkoholen und Allylalkohol-Derivaten und deren Anwendung in der organischen Synthese. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201204579] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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31
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Armstrong DR, Clegg W, García-Álvarez P, Kennedy AR, McCall MD, Russo L, Hevia E. Expanding Mg-Zn Hybrid Chemistry: Inorganic Salt Effects in Addition Reactions of Organozinc Reagents to Trifluoroacetophenone and the Implications for a Synergistic Lithium-Magnesium-Zinc Activation. Chemistry 2011; 17:8333-41. [DOI: 10.1002/chem.201100866] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Indexed: 11/07/2022]
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32
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Zhang GW, Meng W, Ma H, Nie J, Zhang WQ, Ma JA. Catalytic Enantioselective Alkynylation of Trifluoromethyl Ketones: Pronounced Metal Fluoride Effects and Implications of Zinc-to-Titanium Transmetallation. Angew Chem Int Ed Engl 2011; 50:3538-42. [DOI: 10.1002/anie.201007341] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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33
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Zhang GW, Meng W, Ma H, Nie J, Zhang WQ, Ma JA. Catalytic Enantioselective Alkynylation of Trifluoromethyl Ketones: Pronounced Metal Fluoride Effects and Implications of Zinc-to-Titanium Transmetallation. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007341] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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34
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Nie J, Guo HC, Cahard D, Ma JA. Asymmetric construction of stereogenic carbon centers featuring a trifluoromethyl group from prochiral trifluoromethylated substrates. Chem Rev 2010; 111:455-529. [PMID: 21117644 DOI: 10.1021/cr100166a] [Citation(s) in RCA: 876] [Impact Index Per Article: 62.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jing Nie
- Department of Chemistry, Tianjin University, China
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35
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Yazaki R, Kumagai N, Shibasaki M. Direct Catalytic Asymmetric Addition of Allyl Cyanide to Ketones via Soft Lewis Acid/Hard Brønsted Base/Hard Lewis Base Catalysis. J Am Chem Soc 2010; 132:5522-31. [DOI: 10.1021/ja101687p] [Citation(s) in RCA: 121] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ryo Yazaki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Naoya Kumagai
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masakatsu Shibasaki
- Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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36
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Fressigné C, Maddaluno J. Are sp Lithiated Carbons More Nucleophilic than sp2or sp3Ones? A Comparative DFT Study of the Condensation of Propynyllithium Aggregates on Formaldehyde. J Org Chem 2010; 75:1427-36. [DOI: 10.1021/jo902315t] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Catherine Fressigné
- Laboratoire de Chimie Théorique, CNRS UMR 7616, Université Pierre et Marie Curie, Case Courrier 137, 4, place Jussieu, 75252 Paris Cedex 05, France
- Institut de Recherche en Chimie Organique Fine, CNRS UMR 6014 & FR 3038, Université de Rouen, 76821-Mont St Aignan Cedex, France
| | - Jacques Maddaluno
- Institut de Recherche en Chimie Organique Fine, CNRS UMR 6014 & FR 3038, Université de Rouen, 76821-Mont St Aignan Cedex, France
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37
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Hevia E, Kennedy AR, Klett J, Livingstone Z, McCall MD. New insights into addition reactions of dialkylzinc reagents to trifluoromethyl ketones: Structural authentication of a β-hydride elimination product containing a tetranuclear zinc chain. Dalton Trans 2010:520-6. [DOI: 10.1039/b911818g] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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38
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Li FQ, Zhong S, Lu G, Chan AS. Zinc-Salen-Catalyzed Asymmetric Alkynylation of Alkyl Acylsilanes. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200900177] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Luderer MR, Bailey WF, Luderer MR, Fair JD, Dancer RJ, Sommer MB. Asymmetric addition of achiral organomagnesium reagents or organolithiums to achiral aldehydes or ketones: a review. ACTA ACUST UNITED AC 2009. [DOI: 10.1016/j.tetasy.2009.03.015] [Citation(s) in RCA: 109] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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40
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Abstract
Over the past decade, large strides have been achieved in the invention of methods for the direct enantioselective addition of alkynes and metal alkynylide nucleophiles into prochiral aldehydes, ketones, and imines. This review highlights and compares the available methods for these transformations.
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Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, California 94305-5080
| | - Andrew H Weiss
- Department of Chemistry & Chemical Biology, Harvard University, 12 Oxford St., Cambridge, MA 02138
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41
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Lee WK, Park YS, Beak P. Dynamic thermodynamic resolution: advantage by separation of equilibration and resolution. Acc Chem Res 2009; 42:224-34. [PMID: 19152329 DOI: 10.1021/ar8000662] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In the investigation of a chemical reaction, researchers typically survey variables such as time, temperature, and stoichiometry to optimize yields. This Account demonstrates how control of these variables, often in nontraditional ways, can provide significant improvements in enantiomeric ratios for asymmetric reactions. Dynamic thermodynamic resolution (DTR) offers a convenient method for the resolution of enantiomeric products in the course of a reaction. This process depends on an essential requirement: the equilibration of the penultimate diastereomers must be subject to external control. As a general case, the reaction of A(R), A(S) with B under the influence of the chiral species, L*, gives resolved products C(R) and C(S). In the first step of dynamic resolution under thermodynamic control, the enantiomeric reactants A(R) and A(S) and L* form the diastereomers A(R)/L* and A(S)/L*. The equilibrium between A(R) and A(S) can be rapid, slow, or not operative, and L* can represent a ligand, an auxiliary, or a crystallization process that provides a chiral environment. Second, the populations of the diastereomers are controlled, usually by thermal equilibration. Finally, the reaction of the diastereomers with a reagent B provides the enantiomeric products C(R) and C(S). The control of the diastereomeric equilibrium distinguishes DTR from other resolution techniques. By contrast, physical resolutions separate thermodynamically stable, nonequilibrating diastereomers, and dynamic kinetic resolutions utilize kinetic control for reactions of rapidly equilibrating diastereomers. The dynamic thermodynamic resolutions discussed in this Account illustrate cases of significantly improved enantioselectivities using this technique. Although many of the well-recognized cases come from organolithium chemistry, the principles are general, and we also present cases facilitated by other chemistries. This approach has been used to control enantioselectivities in a number of different reactions, with improvements in enantiomeric ratios up to 99% from essentially racemic reactants.
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Affiliation(s)
- Won Koo Lee
- Department of Chemistry and Interdisciplinary Programs of Integrated Biotechnology, Sogang University, Seoul 121-742, Korea
| | - Yong Sun Park
- Department of Chemistry and Bio/Molecular Information Center, Konkuk University, Seoul 143-701, Korea
| | - Peter Beak
- Department of Chemistry, University of Illinois, 600 South Mathews Avenue, Urbana, Illinois 61801
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42
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Affiliation(s)
- Terry ‘Li’ Rathman
- t-Links Consulting, 100-29 Willow Run, Gastonia, North Carolina 28056, U.S.A., and Department of Chemistry, The University of Connecticut, Storrs, Connecticut 06269 U.S.A
| | - William F. Bailey
- t-Links Consulting, 100-29 Willow Run, Gastonia, North Carolina 28056, U.S.A., and Department of Chemistry, The University of Connecticut, Storrs, Connecticut 06269 U.S.A
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43
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Gschwind RM. Organocuprates and Diamagnetic Copper Complexes: Structures and NMR Spectroscopic Structure Elucidation in Solution. Chem Rev 2008; 108:3029-53. [DOI: 10.1021/cr800286r] [Citation(s) in RCA: 111] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ruth M. Gschwind
- Institut für Organische Chemie, Universität Regensburg, Universitätsstrasse 31, D-93040 Regensburg, Germany
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44
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Fadeyi OO, Adamson ST, Myles EL, Okoro CO. Novel fluorinated acridone derivatives. Part 1: Synthesis and evaluation as potential anticancer agents. Bioorg Med Chem Lett 2008; 18:4172-6. [PMID: 18541426 DOI: 10.1016/j.bmcl.2008.05.078] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Revised: 05/19/2008] [Accepted: 05/19/2008] [Indexed: 11/16/2022]
Affiliation(s)
- Olugbeminiyi O Fadeyi
- Department of Chemistry, Tennessee State University, 3500 John A. Merritt Boulevard, Nashville, TN 37209-1561, USA
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45
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Liu J, Li D, Sun C, Williard PG. Analysis of an asymmetric addition with a 2:1 mixed lithium amide/n-butyllithium aggregate. J Org Chem 2008; 73:4045-52. [PMID: 18459811 DOI: 10.1021/jo800592d] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A 2:1 lithium amide/ n-butyllithium aggregate 1 is investigated as an asymmetric addition template in hydrocarbon solvents. Several different chiral lithium amides were synthesized from l-valine and tested in the asymmetric addition of n-BuLi to various aldehydes. Enantiomeric excesses up to 83% were obtained in the case of the addition of n-BuLi to pivaldehyde at -116 degrees C in pentane. (1)H and (13)C INEPT DOSY were utilized to characterize a new trimeric complex 12 between 2 equiv of lithium amide and 1 equiv of lithium alkoxide. This mixed aggregate strongly indicates the possibility of product-induced chirality inhibition that is detrimental to the enantioselectivity of asymmetric addition reaction.
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Affiliation(s)
- Jia Liu
- Department of Chemistry, Brown University, Providence, RI 02912, USA
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46
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Yu H, Richey RN, Stout JR, LaPack MA, Gu R, Khau VV, Frank SA, Ott JP, Miller RD, Carr MA, Zhang TY. Development of a Practical Synthesis of DPP IV Inhibitor LY2497282. Org Process Res Dev 2008. [DOI: 10.1021/op700235c] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hannah Yu
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - Rachel N. Richey
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - James R. Stout
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - Mark A. LaPack
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - Ruilin Gu
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - Vien V. Khau
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - Scott A. Frank
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - Joel P. Ott
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - Richard D. Miller
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - Michael A. Carr
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
| | - Tony Y. Zhang
- Chemical Product Research and Development, Lilly Research Laboratories,
Eli Lilly and Company, Indianapolis, Indiana, 46285-4813, U.S.A
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47
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Morris JJ, Macdougall DJ, Noll BC, Henderson KW. Manipulation of molecular aggregation and supramolecular structure using self-assembled lithium mixed-anion complexes. Dalton Trans 2008:3429-37. [PMID: 18580979 DOI: 10.1039/b719565f] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- J Jacob Morris
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556, USA
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48
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Farina V, Reeves JT, Senanayake CH, Song JJ. Asymmetric synthesis of active pharmaceutical ingredients. Chem Rev 2007; 106:2734-93. [PMID: 16836298 DOI: 10.1021/cr040700c] [Citation(s) in RCA: 384] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Vittorio Farina
- Department of Chemical Development, Boehringer Ingelheim Pharmaceuticals Inc., 900 Ridgebury Road, Ridgefield, Connecticut 06877, USA
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49
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Wang Q, Zhang B, Hu G, Chen C, Zhao Q, Wang R. Asymmetric addition of 1-ethynylcyclohexene to both aromatic and heteroaromatic ketones catalyzed by a chiral Schiff base-zinc complex. Org Biomol Chem 2007; 5:1161-3. [PMID: 17406711 DOI: 10.1039/b702069d] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The evaluation of a chiral Schiff base ligand in the zinc-catalyzed asymmetric addition of 1-ethynylcyclohexene to both aromatic and heteroaromatic ketones is reported (with up to 83% enantioselectivity and up to 88% isolated yield).
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Affiliation(s)
- Quan Wang
- Department of Biochemistry and Molecular Biology, School of Life Sciences, and State key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou, Gansu 730000, China
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50
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Riant O, Hannedouche J. Asymmetric catalysis for the construction of quaternary carbon centres: nucleophilic addition on ketones and ketimines. Org Biomol Chem 2007; 5:873-88. [PMID: 17340001 DOI: 10.1039/b617746h] [Citation(s) in RCA: 394] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
There is a growing need in organic synthesis for efficient methodologies for the asymmetric synthesis of quaternary carbon centres. One of the most attractive and straightforward methods focuses on the use of asymmetric catalysis for the addition of various types of nucleophiles on prochiral ketones and ketimines. A view of the literature from this growing area of research will be presented in this review, with an emphasis on the pioneer works and milestones brought by the main players in this field.
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Affiliation(s)
- Olivier Riant
- Unité de chimie organique et médicinale, département de chimie, place Louis Pasteur 1, Université catholique de Louvain, 1348, Louvain la Neuve, Belgium.
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