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Khanvilkar AN, Samanta SG, Bedekar AV. Applications of chiral naphthyloxycyclohexanols in deracemization of α-substituted carboxylic acids by dynamic thermodynamic resolution. Org Biomol Chem 2019; 17:2670-2683. [DOI: 10.1039/c8ob02896f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of chiral naphthyloxycyclohexanols and their applications in the preparation of optically pure α-substituted carboxylic acids by dynamic thermodynamic resolution.
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Affiliation(s)
- Aditya N. Khanvilkar
- Department of Chemistry
- Faculty of Science
- The Maharaja Sayajirao University of Baroda
- Vadodara 390 002
- India
| | - Sudeep G. Samanta
- Department of Chemistry
- Faculty of Science
- The Maharaja Sayajirao University of Baroda
- Vadodara 390 002
- India
| | - Ashutosh V. Bedekar
- Department of Chemistry
- Faculty of Science
- The Maharaja Sayajirao University of Baroda
- Vadodara 390 002
- India
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2
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Huang PQ, Huang YH, Xiao KJ. Metal-Free Intermolecular Coupling of Arenes with Secondary Amides: Chemoselective Synthesis of Aromatic Ketimines and Ketones, and N-Deacylation of Secondary Amides. J Org Chem 2016; 81:9020-9027. [PMID: 27603045 DOI: 10.1021/acs.joc.6b01647] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The direct transformation of common secondary amides into aromatic ketimines and aromatic ketones with C-C bond formation is described. The reaction can also be used for N-deacylation of secondary amides to release amines. This method consists of in situ amide activation with triflic anhydride and intermolecular capture of the resulting highly electrophilic nitrilium intermediate with an arene. The reaction is applicable to various kinds of secondary amides (electrophiles), but only electron-rich and moderately electron-rich arenes can be used as nucleophiles. Thanks to the use of bench stable arenes instead of reactive and basic organometallics as nucleophiles, the reaction proceeded with high chemoselectivity at the secondary amido group in the presence of a series of sensitive functional groups such as aldehyde, ketone, ester, cyano, nitro, and tertiary amido groups. The reaction can be viewed as a Friedel-Crafts-type reaction using secondary amides as acylating agents or as an intermolecular version of the Bischler-Napieralski reaction.
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Affiliation(s)
- Pei-Qiang Huang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, P. R. China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University , Tianjin 300071, P. R. China
| | - Ying-Hong Huang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, P. R. China
| | - Kai-Jiong Xiao
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology, Collaborative Innovation Centre of Chemistry for Energy Materials (iChEM), College of Chemistry and Chemical Engineering, Xiamen University , Xiamen, Fujian 361005, P. R. China
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3
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Bertolotti M, Brenna E, Crotti M, Gatti FG, Monti D, Parmeggiani F, Santangelo S. Substrate Scope Evaluation of the Enantioselective Reduction of β-Alkyl-β-arylnitroalkenes by Old Yellow Enzymes 1-3 for Organic Synthesis Applications. ChemCatChem 2015. [DOI: 10.1002/cctc.201500958] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mattia Bertolotti
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta” Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
| | - Elisabetta Brenna
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta” Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
- Istituto di Chimica del Riconoscimento Molecolare; C.N.R.; Via Mario Bianco, 9 20131 Milano Italy
| | - Michele Crotti
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta” Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
| | - Francesco G. Gatti
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta” Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
| | - Daniela Monti
- Istituto di Chimica del Riconoscimento Molecolare; C.N.R.; Via Mario Bianco, 9 20131 Milano Italy
| | - Fabio Parmeggiani
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta” Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
| | - Sara Santangelo
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta” Politecnico di Milano; Via Mancinelli 7 20131 Milano Italy
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4
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Xing S, Ren J, Wang K, Cui H, Li W, Yan H. Lewis acid promoted three-component reactions of aziridines, arenes and aldehydes: an efficient and diastereoselective synthesis of cis-1,4-disubstituted tetrahydroisoquinolines. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.06.013] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Huang PQ, Geng H. Simple, versatile, and chemoselective reduction of secondary amides and lactams to amines with the Tf2O–NaBH4 or Cp2ZrHCl–NaBH4 system. Org Chem Front 2015. [DOI: 10.1039/c4qo00317a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient method for the direct reduction of secondary amides and lactams to amines is reported.
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Affiliation(s)
- Pei-Qiang Huang
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology
- Collaborative Innovation Centre of Chemistry for Energy Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Hui Geng
- Department of Chemistry and Fujian Provincial Key Laboratory of Chemical Biology
- Collaborative Innovation Centre of Chemistry for Energy Materials
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
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6
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Dynamics of the Lithium Amide/Alkyllithium Interactions: Mixed Dimers and Beyond. TOP ORGANOMETAL CHEM 2014. [DOI: 10.1007/3418_2014_75] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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7
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Pulis AP, Blair DJ, Torres E, Aggarwal VK. Synthesis of Enantioenriched Tertiary Boronic Esters by the Lithiation/Borylation of Secondary Alkyl Benzoates. J Am Chem Soc 2013; 135:16054-7. [DOI: 10.1021/ja409100y] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Alexander P. Pulis
- School of Chemistry, University of Bristol, Cantock’s
Close, Bristol BS8 1TS, United Kingdom
| | - Daniel J. Blair
- School of Chemistry, University of Bristol, Cantock’s
Close, Bristol BS8 1TS, United Kingdom
| | - Eva Torres
- School of Chemistry, University of Bristol, Cantock’s
Close, Bristol BS8 1TS, United Kingdom
| | - Varinder K. Aggarwal
- School of Chemistry, University of Bristol, Cantock’s
Close, Bristol BS8 1TS, United Kingdom
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Unkelbach C, Rosenbaum HS, Strohmann C. Direct benzylic metalation of a phenethylamine derivative: potassium as the key to both generation and stabilization of a labile anion. Chem Commun (Camb) 2013; 48:10612-4. [PMID: 22992791 DOI: 10.1039/c2cc35888c] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
t-BuLi-t-BuOK selectively metalates the benzylic position of 2-phenylethyldimethylamine under mild conditions without occurrence of β-elimination in the resulting metalated species. Theoretical and structural studies indicate that potassium is crucial for both the lowering of the barrier of the initial deprotonation step and the stabilization of the labile anion.
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Affiliation(s)
- Christian Unkelbach
- Anorganische Chemie, Technische Universität Dortmund, Otto-Hahn-Strasse 6, D-44227 Dortmund, Germany
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9
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Harrison-Marchand A, Gérard H, Maddaluno J. Catalytic enantioselective nucleophilic addition of organolithium derivatives: pitfalls and opportunities. NEW J CHEM 2012. [DOI: 10.1039/c2nj40474e] [Citation(s) in RCA: 13] [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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10
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Lecachey B, Fressigné C, Oulyadi H, Harrison-Marchand A, Maddaluno J. First substoichiometric version of the catalytic enantioselective addition of an alkyllithium to an aldehyde. Chem Commun (Camb) 2011; 47:9915-7. [PMID: 21811732 DOI: 10.1039/c1cc13513a] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A substoichiometric enantioselective version of the extremely fast nucleophilic addition of Alk-Li to RCHO is made possible thanks to a thorough analysis of the aggregation phenomena involved in the reaction: calculated quantities of LiCl must be added to the medium at the right time to keep the catalytic cycle running.
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Affiliation(s)
- Baptiste Lecachey
- CNRS UMR 6014 & FR 3038, Université de Rouen and INSA de Rouen, Mont St Aignan, France
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11
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Valenta P, Carroll PJ, Walsh PJ. Stereoselective synthesis of β-hydroxy enamines, aminocyclopropanes, and 1,3-amino alcohols via asymmetric catalysis. J Am Chem Soc 2010; 132:14179-90. [PMID: 20853837 PMCID: PMC3014220 DOI: 10.1021/ja105435y] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tandem methods for the catalytic asymmetric preparation of enantioenriched β-hydroxy (E)-enamines and aminocyclopropanes are presented. The diastereoselective hydrogenation of enantioenriched (E)-trisubstituted hydroxy enamines to generate 1,2-disubstituted-1,3-amino alcohols is also outlined. These methods are initiated by highly regioselective hydroboration of N-tosyl-substituted ynamides with diethylborane to generate β-amino alkenyl boranes. In situ boron-to-zinc transmetalation generates β-amino alkenylzinc reagents. These functionalized vinylzinc intermediates are subsequently added to aldehydes in the presence of a catalyst derived from an enantioenriched amino alcohol (morpholino isoborneol, MIB). The catalyst promotes highly enantioselective C-C bond formation to provide β-hydroxy enamines in good isolated yields (68-86%) with 54-98% enantioselectivity. The intermediate zinc β-alkoxy enamines can be subjected to a tandem cyclopropanation to afford aminocyclopropyl carbinols with three continuous stereocenters in a one-pot procedure with good yields (72-82%), enantioselectivities of 76-94%, and >20:1 diastereomeric ratios. Diastereoselective hydrogenation of isolated enantioenriched β-hydroxy enamines over Pd/C furnished syn-1,2-disubstituted-1,3-amino alcohols in high yields (82-90%) with moderate to excellent diastereoselectivities. These methods were used in an efficient preparation of the enantioenriched precursor to PRC200-SS derivatives, which are potent serotonin-norepinephrine-dopamine reuptake inhibitors.
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Affiliation(s)
- Petr Valenta
- P. Roy and Diana T. Vagelos Laboratories, University of Pennsylvania, Department of Chemistry, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323
| | - Patrick J. Carroll
- P. Roy and Diana T. Vagelos Laboratories, University of Pennsylvania, Department of Chemistry, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323
| | - Patrick J. Walsh
- P. Roy and Diana T. Vagelos Laboratories, University of Pennsylvania, Department of Chemistry, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323
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12
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13
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García Ruano JL, Alemán J, Parra A, Alcudia A, Maya C. Synthesis and Stereoselective Halogenolysis of Optically Pure Benzylstannanes. J Org Chem 2009; 74:2145-52. [DOI: 10.1021/jo802725r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- José L. García Ruano
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid, Spain, Departamento de Química Orgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain, and Departamento de Química Inorgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain
| | - José Alemán
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid, Spain, Departamento de Química Orgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain, and Departamento de Química Inorgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain
| | - Alejandro Parra
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid, Spain, Departamento de Química Orgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain, and Departamento de Química Inorgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain
| | - Ana Alcudia
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid, Spain, Departamento de Química Orgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain, and Departamento de Química Inorgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain
| | - Celia Maya
- Departamento de Química Orgánica, Facultad de Ciencias, Universidad Autónoma de Madrid, Cantoblanco 28049 Madrid, Spain, Departamento de Química Orgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain, and Departamento de Química Inorgánica y Farmaceútica, Facultad de Farmacia, Universidad de Sevilla, 41017 Sevilla, Spain
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14
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Coldham I, Dufour S, Haxell TFN, Patel JJ, Sanchez-Jimenez G. Dynamic Thermodynamic and Dynamic Kinetic Resolution of 2-Lithiopyrrolidines. J Am Chem Soc 2006; 128:10943-51. [PMID: 16910691 DOI: 10.1021/ja061963m] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dynamic resolution has been studied as a method for the asymmetric synthesis of 2-substituted pyrrolidines. Highly enantioselective electrophilic substitutions of racemic 2-lithiopyrrolidines in the presence of a chiral ligand have been achieved. The organolithium compounds were prepared by tin-lithium exchange from the corresponding tributylstannanes and n-butyllithium or by deprotonation of N-(tert-butyloxycarbonyl)pyrrolidine with sec-butyllithium. A range of N-substituents and chiral ligands were investigated for the dynamic resolution. Electrophilic quench of the resolved diastereomeric 2-lithiopyrrolidine-chiral ligand complexes provided the enantiomerically enriched 2-substituted pyrrolidines. With N-alkyl derivatives, the resolution occurs conveniently at (or just below) room temperature and either enantiomer of the product can be formed by appropriate choice of the chiral ligand. The asymmetric induction occurs as a result of a thermodynamic preference for one of the diastereomeric complexes. The minor complex was found to have a faster rate of reaction with the electrophile. The use of N-allylic derivatives provides a means to prepare the N-unsubstituted pyrrolidine products. Best results were obtained with the N-2,3-dimethylbut-2-enyl derivative, and this N-substituent could be cleaved using 1-chloroethyl chloroformate. With N-Boc-2-lithiopyrrolidine, the enantioselectivity arises by a kinetic resolution and high levels of asymmetric induction in the presence of excess n-butyllithium can be obtained. Dynamic kinetic resolution of the N-Boc derivative is limited in the scope of electrophile that can be used.
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Affiliation(s)
- Iain Coldham
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
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15
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García Ruano JL, Aranda MT, Puente M. Remote stereocontrol by sulfinyl groups: asymmetric alkylation of chiral 2-p-tolylsulfinyl benzyl carbanions. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.08.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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16
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Coldham I, Dufour S, Haxell TF, Vennall GP. Dynamic resolution of N-alkyl-2-lithiopyrrolidines with the chiral ligand (−)-sparteine. Tetrahedron 2005. [DOI: 10.1016/j.tet.2005.01.096] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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Deng X, Mani NS. Boron trifluoride etherate-assisted ring opening of ethylene oxide by a chiral organolithium: enantioselective synthesis of (R)-N-Boc-2-(2-hydroxyethyl)pyrrolidine. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.tetasy.2004.11.083] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Wang L, Nakamura S, Ito Y, Toru T. Enantioselective reaction of α-lithiated thiazolidines as new chiral formyl anion equivalents. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.tetasy.2004.08.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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19
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Fleming FF, Wang Q, Steward OW. Hydroxy alkenenitriles: diastereoselective conjugate addition-alkylations. J Org Chem 2003; 68:4235-8. [PMID: 12762721 DOI: 10.1021/jo034174l] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chelation-controlled conjugate addition of Grignard reagents to cyclic and acyclic gamma-hydroxyalkenenitriles stereoselectively generates beta-substituted hydroxynitriles. t-BuMgCl-induced deprotonation of gamma-hydroxyalkenenitriles followed by chloride-alkyl exchange from a second Grignard reagent, generates an alkylmagnesium alkoxide that triggers conjugate addition. Alkylation of the resulting magnesiated nitrile with alkyl halide and carbonyl electrophiles efficiently installs two new bonds and up to three stereocenters in a single synthetic operation.
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Affiliation(s)
- Fraser F Fleming
- Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh, Pennsylvania 15282-1530, USA.
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Wolf C, Pranatharthiharan L, Volpe EC. A convenient method for the determination of the absolute configuration of chiral amines. J Org Chem 2003; 68:3287-90. [PMID: 12688803 DOI: 10.1021/jo026732m] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly useful methodology that allows the determination of the absolute configuration of aliphatic and aromatic chiral amines based on the rationalization of stereoselective three-point interactions during chromatography on a rationally designed chiral stationary phase and conformational analysis of the elutes was developed. This approach is based on the broadly accepted chiral recognition mechanism of the Whelk-O 1 CSP and requires a facile derivatization of the amine and the determination of the lowest energy conformation of the corresponding t-Boc- or Z-derived carbamates. The absolute configuration determined by employing chiral structure activity relationships in HPLC analysis was verified by single-crystal X-ray analysis or studies with carbamoyl derivatives of amines of known configuration. The general validity and applicability of this methodology was demonstrated by analysis of seven carbamates derived from aliphatic and aromatic amines. Due to its simplicity and time-efficiency, i.e., ease of derivatization of amines and fast HPLC method development, this approach can be considered a useful supplement to established techniques such as NMR spectroscopy.
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Affiliation(s)
- Christian Wolf
- Department of Chemistry, Georgetown University, Washington, D.C. 20057, USA.
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21
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Nam J, Lee SK, Park YS. Dynamic thermodynamic resolution of N-methylpseudoephedrine α-bromo esters for asymmetric syntheses of α-hydroxy carboxylic acid derivatives. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)00285-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Beak P, Johnson TA, Kim DD, Lim SH. Enantioselective Synthesis by Lithiation Adjacent to Nitrogen and Electrophile Incorporation. TOP ORGANOMETAL CHEM 2003. [DOI: 10.1007/3-540-36117-0_5] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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