1
|
Luo W, Zhang LM, Zhang ZM, Zhang J. Synthesis of W-Phos Ligand and Its Application in the Copper-Catalyzed Enantioselective Addition of Linear Grignard Reagents to Ketones. Angew Chem Int Ed Engl 2022; 61:e202204443. [PMID: 35555954 DOI: 10.1002/anie.202204443] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Indexed: 12/31/2022]
Abstract
The asymmetric catalytic addition of linear Grignard reagents to ketones has been a long-standing challenge in organic synthesis. Herein, a novel family of PNP ligands (W-Phos) was designed and applied in copper-catalyzed asymmetric addition of linear Grignard reagents to aryl alkyl ketones, allowing facile access to versatile chiral tertiary alcohols in good to high yields with excellent enantioselectivities (up to 94 % yield, 96 % ee). The process can also be used to synthesize chiral allylic tertiary alcohols from more challenging α,β-unsaturated ketones. Notably, the potential utility of this method is demonstrated in the gram-scale synthesis and modification of various densely functionalized medicinally relevant molecules.
Collapse
Affiliation(s)
- Wenjun Luo
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China.,Zhuhai Fudan Innovation Institute, Hengqin NewArea, Zhuhai, 519000, P.R. China
| | - Li-Ming Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
| | - Zhan-Ming Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China
| | - Junliang Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai, 200438, P. R. China.,Zhuhai Fudan Innovation Institute, Hengqin NewArea, Zhuhai, 519000, P.R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, CAS, P. R. China
| |
Collapse
|
2
|
Zhang J, Luo W, Zhang LM, Zhang ZM. Design and Synthesis of W‐Phos and Application in Copper‐Catalyzed Enantioselective Addition of Linear Grignard Reagents to Ketones. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202204443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Junliang Zhang
- Fudan University Department of Chemistry 200062 Shanghai CHINA
| | - Wenjun Luo
- Fudan University Department of Chemistry CHINA
| | | | | |
Collapse
|
3
|
Wang RH, Li YL, He HJ, Xiao YC, Chen FE. Catalytic Asymmetric Addition of Diorganozinc Reagents to Pyrazole-4,5-Diones and Indoline-2,3-Diones. Chemistry 2021; 27:4302-4306. [PMID: 33453077 DOI: 10.1002/chem.202005081] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/23/2020] [Indexed: 12/11/2022]
Abstract
The catalytic enantioselective diorganozinc additions to cyclic diketones including pyrazolin-4,5-diones and isatins have been developed. In the presence of morpholine-containing chiral amino alcohol ligand, the corresponding chiral cyclic tertiary alcohols were produced in good to excellent yields (up to 97 %) and enantioselectivities (up to 95 % ee). The notable feature of this protocol includes its mild reaction conditions, Lewis acid additives free and broad functional group tolerance.
Collapse
Affiliation(s)
- Rong-Hui Wang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Ya-Ling Li
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Hong-Jiao He
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - You-Cai Xiao
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China
| | - Fen-Er Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, P. R. China.,Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, P. R. China.,Shanghai Engineering Center of, Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, P. R. China
| |
Collapse
|
4
|
Cai Y, Ruan L, Rahman A, Shi S. Fast Enantio‐ and Chemoselective Arylation of Ketones with Organoboronic Esters Enabled by Nickel/N‐Heterocyclic Carbene Catalysis. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yuan Cai
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Lin‐Xin Ruan
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Abdul Rahman
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shi‐Liang Shi
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Pharmacy Fudan University Shanghai 201203 China
| |
Collapse
|
5
|
Cai Y, Ruan L, Rahman A, Shi S. Fast Enantio‐ and Chemoselective Arylation of Ketones with Organoboronic Esters Enabled by Nickel/N‐Heterocyclic Carbene Catalysis. Angew Chem Int Ed Engl 2021; 60:5262-5267. [DOI: 10.1002/anie.202015021] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Yuan Cai
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Lin‐Xin Ruan
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Abdul Rahman
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shi‐Liang Shi
- State Key Laboratory of Organometallic Chemistry Center for Excellence in Molecular Synthesis Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- School of Pharmacy Fudan University Shanghai 201203 China
| |
Collapse
|
6
|
Matsuda A, Ushimaru T, Kobayashi Y, Harada T. Catalytic Enantioselective Arylation and Heteroarylation of Ketones with Organotitanium Reagents Generated In Situ. Chemistry 2017; 23:8605-8609. [PMID: 28497884 DOI: 10.1002/chem.201701395] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2017] [Indexed: 12/13/2022]
Abstract
A practical and useful, catalytic enantioselective method has been developed for the synthesis of tertiary diaryl and aryl heteroaryl carbinols starting from commercially available aromatic ketones and aryl or heteroaryl bromides. In this method, organotitanium reagents are generated in situ from the bromides by lithiation with nBuLi followed by transmetallation of the resulting organolithiums with ClTi(OiPr)3 . Treatment of the ketones with the titanium reagents in the presence of (R)-3-(3,5-bistrifluoromehthylphenyl)-1,1'-bi-2-naphthol (BTFP-BINOL) affords the corresponding tertiary alcohols in high enantioselectivities and yields. The reaction can also start with furan and 2-thienyllithium. The method is operationally simple and can be conducted on a 10-mmol scale without any difficulties.
Collapse
Affiliation(s)
- Atsushi Matsuda
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Tomoya Ushimaru
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Yusuke Kobayashi
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| | - Toshiro Harada
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan
| |
Collapse
|
7
|
Huang L, Zhu J, Jiao G, Wang Z, Yu X, Deng WP, Tang W. Highly Enantioselective Rhodium-Catalyzed Addition of Arylboroxines to Simple Aryl Ketones: Efficient Synthesis of Escitalopram. Angew Chem Int Ed Engl 2016; 55:4527-31. [DOI: 10.1002/anie.201600979] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 02/15/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Linwei Huang
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
| | - Jinbin Zhu
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
| | - Guangjun Jiao
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 China
| | - Zheng Wang
- Innovation Center China; AstraZeneca Global R&D; China
| | - Xingxin Yu
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
| | - Wei-Ping Deng
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
| | - Wenjun Tang
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 China
| |
Collapse
|
8
|
Huang L, Zhu J, Jiao G, Wang Z, Yu X, Deng WP, Tang W. Highly Enantioselective Rhodium-Catalyzed Addition of Arylboroxines to Simple Aryl Ketones: Efficient Synthesis of Escitalopram. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600979] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Linwei Huang
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
| | - Jinbin Zhu
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
| | - Guangjun Jiao
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 China
| | - Zheng Wang
- Innovation Center China; AstraZeneca Global R&D; China
| | - Xingxin Yu
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
| | - Wei-Ping Deng
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
| | - Wenjun Tang
- Shanghai Key Laboratory of New Drug Design; School of Pharmacy; East China University of Science and Technology; 130 Mei Long Rd Shanghai 200237 China
- State Key Laboratory of Bio-Organic and Natural Products Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 China
| |
Collapse
|
9
|
1,2- Versus 1,4-Asymmetric Addition of Grignard Reagents to Carbonyl Compounds. TOP ORGANOMETAL CHEM 2016. [DOI: 10.1007/3418_2015_164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
10
|
Rong J, Pellegrini T, Harutyunyan SR. Synthesis of Chiral Tertiary Alcohols by CuI-Catalyzed Enantioselective Addition of Organomagnesium Reagents to Ketones. Chemistry 2015; 22:3558-70. [DOI: 10.1002/chem.201503412] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Indexed: 11/10/2022]
Affiliation(s)
- Jiawei Rong
- Stratingh Institute; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | - Tilde Pellegrini
- Stratingh Institute; University of Groningen; Nijenborgh 4 9747AG Groningen The Netherlands
| | | |
Collapse
|
11
|
Tanaka S, Mori A. Rhodium-Catalyzed Cross-Coupling of Vinylarenes with Arylaluminum Reagents in the Presence of Ketones. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301757] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
12
|
Unsinn A, Wunderlich SH, Jana A, Karaghiosoff K, Knochel P. A convenient alumination of functionalized aromatics by using the frustrated Lewis pair Et3 Al and TMPMgCl⋅LiCl. Chemistry 2013; 19:14687-96. [PMID: 24027191 DOI: 10.1002/chem.201301869] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Indexed: 11/07/2022]
Abstract
A straightforward and efficient alumination of functionalized arenes by using the frustrated Lewis pair Et3 Al and TMPMgCl⋅LiCl (TMP=2,2,6,6-tetramethylpiperidyl) has been developed. In particular, halogenated electron-rich aromatics can be smoothly functionalized by using the frustrated Lewis pair Et3 Al and TMPMgCl⋅LiCl. Compared with previously described alumination methods, this procedure avoids extensive cooling and the need for an excess of base. This in situ procedure has proven to be most practical and allows for regio- and chemoselective metalation of a wide range of aromatics with sensitive functional groups (CONEt2 , CO2 Me, CN, OCONMe2 ) or halogens (F, Cl, Br, I). The resulting aromatic aluminates, which were characterized by using NMR spectroscopy, were subjected to allylations, acylations, and palladium-catalyzed cross-coupling reactions after transmetalation to zinc. It was shown that the nature of the Zn salt used for transmetalation is crucial. Thus, compared with ZnCl2 (2 equiv), the use of Zn(OPiv)2 (2 equiv; OPiv=pivalate) allows the subsequent quenching reactions to be performed with only a slight excess of electrophile (1.2 equiv) and provides interesting functionalized aromatics in good yields.
Collapse
Affiliation(s)
- Andreas Unsinn
- Department Chemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, Haus F, 81377 München (Germany), Fax: (+49) 89-2180-77680
| | | | | | | | | |
Collapse
|
13
|
Wu KH, Kuo YY, Chen CA, Huang YL, Gau HM. Enantioselective Additions of Aryltitanium Tris(isopropoxide) to Ketones: Structure of [(i-PrO)2Ti{μ-(S)-BINOLate}(μ-O-i-Pr)TiPh(O-i-Pr)2], Study of Mechanistic and Stereochemical Insights. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200672] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
14
|
Madduri AVR, Harutyunyan SR, Minnaard AJ. Catalytic asymmetric alkylation of ketones using organometallic reagents. DRUG DISCOVERY TODAY. TECHNOLOGIES 2013; 10:e21-e27. [PMID: 24050226 DOI: 10.1016/j.ddtec.2012.10.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The catalytic asymmetric synthesis of tertiary alcohols by the addition of organometallic reagents to ketones is of central importance in organic chemistry. The resulting quaternary stereocentres are difficult to prepare selectively by other means despite their widespread occurrence in natural products and pharmaceuticals. Over the past few years, several seminal reports on the formation of chiral tertiary alcohols with excellent selectivities have appeared in the literature. This review records the major strategies and current status of the catalytic enantioselective synthesis of chiral tertiary alcohols using alkylation/ arylation reactions with highly reactive organometallic reagents derived from Zn, Al, Mg and Li.
Collapse
|
15
|
Chen CR, Zhou S, Biradar DB, Gau HM. Extremely Efficient Cross-Coupling of Benzylic Halides with Aryltitanium Tris(isopropoxide) Catalyzed by Low Loadings of a Simple Palladium(II) Acetate/Tris(p-tolyl)phosphine System. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000311] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
16
|
Zhou Y, Lecourt T, Micouin L. Direct Synthesis of 1,4-Disubstituted-5-alumino-1,2,3-triazoles: Copper-Catalyzed Cycloaddition of Organic Azides and Mixed Aluminum Acetylides. Angew Chem Int Ed Engl 2010; 49:2607-10. [PMID: 20198674 DOI: 10.1002/anie.200907016] [Citation(s) in RCA: 119] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuhan Zhou
- UMR 8638, Université Paris Descartes, CNRS, Faculté de Pharmacie, 4 avenue de l'Observatoire, 75006 Paris, France
| | | | | |
Collapse
|
17
|
Zhou Y, Lecourt T, Micouin L. Direct Synthesis of 1,4-Disubstituted-5-alumino-1,2,3-triazoles: Copper-Catalyzed Cycloaddition of Organic Azides and Mixed Aluminum Acetylides. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200907016] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
18
|
Yu R, Yamashita Y, Kobayashi S. Titanium(IV)/Tridentate BINOL Derivative as Catalyst for meso-Aziridine Ring-Opening Reactions: High Enantioselectivity, Strong Positive Non-Linear Effect and Structural Characterization. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800402] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
19
|
Muramatsu Y, Harada T. Catalytic Asymmetric Aryl Transfer Reactions to Aldehydes with Grignard Reagents as the Aryl Source. Chemistry 2008; 14:10560-3. [DOI: 10.1002/chem.200801612] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
20
|
May T, Brown MK, Hoveyda A. Enantioselective Synthesis of All-Carbon Quaternary Stereogenic Centers by Catalytic Asymmetric Conjugate Additions of Alkyl and Aryl Aluminum Reagents to Five-, Six-, and Seven-Membered-Ring β-Substituted Cyclic Enones. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200802910] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
21
|
|
22
|
Chen C, Wu K, Gau H. A New Aspect of Magnesium Bromide‐Promoted Enantioselective Aryl Additions of Triaryl(tetrahydrofuran)aluminum to Ketones Catalyzed by a Titanium(IV) Catalyst oftrans‐1,2‐Bis(hydroxycamphorsulfonylamino)cyclohexane. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800169] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
23
|
Yang F, Wei S, Chen CA, Xi P, Yang L, Lan J, Gau HM, You J. A New Strategy for Designing Non-C2-Symmetric Monometallic Bifunctional Catalysts and Their Application in Enantioselective Cyanation of Aldehydes. Chemistry 2008; 14:2223-31. [DOI: 10.1002/chem.200701660] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
24
|
May TL, Brown MK, Hoveyda AH. Enantioselective synthesis of all-carbon quaternary stereogenic centers by catalytic asymmetric conjugate additions of alkyl and aryl aluminum reagents to five-, six-, and seven-membered-ring beta-substituted cyclic enones. Angew Chem Int Ed Engl 2008; 47:7358-62. [PMID: 18683828 PMCID: PMC2737810 DOI: 10.1002/anie.200802910] [Citation(s) in RCA: 174] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Tricia L. May
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467 (USA)
| | - M. Kevin Brown
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467 (USA)
| | - Amir H. Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467 (USA)
| |
Collapse
|