1
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Yamashita Y, Fushimi S, Banik T, Kimura T, Kobayashi S. Development of Catalytic Enantioselective Mannich Reactions Using Esters. Org Lett 2024; 26:1579-1583. [PMID: 38373207 DOI: 10.1021/acs.orglett.3c04326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2024]
Abstract
Catalytic enantioselective Mannich reactions of simple nonactivated esters proceeded using a chiral potassium strong base catalyst prepared from a chiral bisoxazoline and potassium hexamethyldisilazide. Alkyl acetates, alkyl propionates, and an alkyl butyrate were employed as the simple esters, and the desired reactions proceeded smoothly to afford Mannich products in good to high yields with high enantioselectivities. One of the products was successfully employed in the asymmetric total synthesis of Maraviroc.
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Affiliation(s)
- Yasuhiro Yamashita
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo Japan, 113-0033
| | - Seiya Fushimi
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo Japan, 113-0033
| | - Trisha Banik
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo Japan, 113-0033
| | - Tomoya Kimura
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo Japan, 113-0033
| | - Shu Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo Japan, 113-0033
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2
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Modern Approaches to Synthetic Design of Chiral α-Tertiary Amines Based on Trifluoromethylcontaining Ketimines: A Review. THEOR EXP CHEM+ 2022. [DOI: 10.1007/s11237-022-09710-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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3
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Kodama Y, Imai S, Fujimoto J, Sato K, Mase N, Narumi T. Stereoselective synthesis of highly functionalized ( Z)-chloroalkene dipeptide isosteres containing an α,α-disubstituted amino acid. Chem Commun (Camb) 2021; 57:6915-6918. [PMID: 34152343 DOI: 10.1039/d1cc02952e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Described here is the first stereoselective synthesis of highly functionalized chloroalkene dipeptide isosteres containing an α,α-disubstituted amino acid (ααAA). This synthesis requires the construction of a quaternary carbon center, and this challenge was overcome by the Aza-Darzens condensation of ketimine with α,α-dichloroenolate, producing 2-chloroaziridines with quaternary carbon centers including spirocyclic motifs, which are valuable for the previously elusive synthesis of various ααAA-containing chloroalkene isosteres.
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Affiliation(s)
- Yuki Kodama
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan.
| | - Saki Imai
- Course of Applied Chemistry and Biochemical Engineering, Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan
| | - Junko Fujimoto
- Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Shizuoka, 432-8561, Japan
| | - Kohei Sato
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan. and Course of Applied Chemistry and Biochemical Engineering, Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan and Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Shizuoka, 432-8561, Japan
| | - Nobuyuki Mase
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan. and Course of Applied Chemistry and Biochemical Engineering, Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan and Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Shizuoka, 432-8561, Japan and Green Energy Research Division, Research Institute of Green Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan
| | - Tetsuo Narumi
- Graduate School of Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan. and Course of Applied Chemistry and Biochemical Engineering, Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan and Department of Applied Chemistry and Biochemical Engineering, Faculty of Engineering, Shizuoka University, Shizuoka, 432-8561, Japan and Green Chemistry Research Division, Research Institute of Green Science and Technology, Shizuoka University, 3-5-1 Johoku, Hamamatsu, Shizuoka, 432-8561, Japan
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4
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Niu ST, Liu H, Xu YJ, Lu CD. Diastereoselective α-Sulfenylation of N- tert-Butanesulfinyl Imidates. J Org Chem 2018; 83:10580-10588. [PMID: 30010340 DOI: 10.1021/acs.joc.8b01403] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A diastereoselective α-sulfenylation of chiral α-aryl/alkyl N- tert-butanesulfinyl imidates has been developed. Suitable sulfur electrophiles can be used as sulfenylating reagents to intercept aza-enolates generated from imidate deprotonation, giving α-thiofunctionalized imidates in good yields with high diastereocontrol. This protocol for C-S bond formation can efficiently synthesize enantioenriched 1,2-sulfanyl amine derivatives such as sulconazole.
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Affiliation(s)
- Sheng-Tong Niu
- Key Laboratory of Plant Resources and Chemistry of Arid Zones , Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences , Urumqi 830011 , China.,University of the Chinese Academy of Sciences , Beijing 100049 , China
| | - Hui Liu
- Key Laboratory of Plant Resources and Chemistry of Arid Zones , Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences , Urumqi 830011 , China
| | - Yan-Jun Xu
- Key Laboratory of Plant Resources and Chemistry of Arid Zones , Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences , Urumqi 830011 , China
| | - Chong-Dao Lu
- Key Laboratory of Plant Resources and Chemistry of Arid Zones , Xinjiang Technical Institute of Physics & Chemistry, Chinese Academy of Sciences , Urumqi 830011 , China
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5
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Yoshida M, Umeda K, Doi T. Stereoselective Synthesis of β-Amino Acid Derivatives by Asymmetric Mannich Reaction in Flow. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20170194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masahito Yoshida
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578
| | - Koji Umeda
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578
| | - Takayuki Doi
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3 Aza-Aoba, Aramaki, Aoba-ku, Sendai 980-8578
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6
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Limanto J, Yoshikawa N, Reamer RA, Tan L, Brunskill A, Reibarkh M. Promotion of a Ti-Mediated Mannich Reaction by a Proton Source. J Org Chem 2016; 81:723-8. [PMID: 26656787 DOI: 10.1021/acs.joc.5b02452] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Low temperature NMR studies revealed that a diastereoselective Mannich reaction between a phenyl oxazolidone-derived titanium enolate and an aromatic aldimine was found to occur only after introduction of a proton source. While various protic additives could be used to promote the transformation, the best results were obtained using AcOH to afford the corresponding Mannich products in high diastereoselectivities and yields.
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Affiliation(s)
- John Limanto
- Department of Process Chemistry, Merck Research Laboratories Merck & Company, Inc. , Rahway, New Jersey 07065, United States
| | - Naoki Yoshikawa
- Department of Process Chemistry, Merck Research Laboratories Merck & Company, Inc. , Rahway, New Jersey 07065, United States
| | - Robert A Reamer
- Department of Process Chemistry, Merck Research Laboratories Merck & Company, Inc. , Rahway, New Jersey 07065, United States
| | - Lushi Tan
- Department of Process Chemistry, Merck Research Laboratories Merck & Company, Inc. , Rahway, New Jersey 07065, United States
| | - Andrew Brunskill
- Department of Process Chemistry, Merck Research Laboratories Merck & Company, Inc. , Rahway, New Jersey 07065, United States
| | - Mikhail Reibarkh
- Department of Process Chemistry, Merck Research Laboratories Merck & Company, Inc. , Rahway, New Jersey 07065, United States
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7
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Lin CY, Ma PJ, Sun Z, Lu CD, Xu YJ. Carbamoyl anion-initiated cascade reaction for stereoselective synthesis of substituted α-hydroxy-β-amino amides. Chem Commun (Camb) 2016; 52:912-5. [DOI: 10.1039/c5cc08118a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A carbamoyl anion-initiated cascade reaction with acylsilanes and imines allows rapid construction of substituted α-hydroxy-β-amino amides in high yields with excellent diastereoselectivities.
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Affiliation(s)
- Chao-Yang Lin
- The Key Laboratory of Plant Resources and Chemistry of Arid Zones
- Xinjiang Technical Institute of Physics & Chemistry
- Chinese Academy of Sciences
- Urumqi 830011
- China
| | - Peng-Ju Ma
- The Key Laboratory of Plant Resources and Chemistry of Arid Zones
- Xinjiang Technical Institute of Physics & Chemistry
- Chinese Academy of Sciences
- Urumqi 830011
- China
| | - Zhao Sun
- Department of Chemistry and Applied Chemistry
- Changji University
- Changji 831100
- China
| | - Chong-Dao Lu
- The Key Laboratory of Plant Resources and Chemistry of Arid Zones
- Xinjiang Technical Institute of Physics & Chemistry
- Chinese Academy of Sciences
- Urumqi 830011
- China
| | - Yan-Jun Xu
- The Key Laboratory of Plant Resources and Chemistry of Arid Zones
- Xinjiang Technical Institute of Physics & Chemistry
- Chinese Academy of Sciences
- Urumqi 830011
- China
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8
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Huang ZA, Liu H, Lu CD, Xu YJ. Stereoselective Synthesis of Enantioenriched 2-Chloro-2-aroylaziridines by Cascade Reaction between Aryl Nitriles, Silyldichloromethanes, and tert-Butanesulfinylimines. Org Lett 2015; 17:4042-5. [PMID: 26226516 DOI: 10.1021/acs.orglett.5b01954] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The cascade coupling of aryl nitriles, silyldichloromethanes, and tert-butanesulfinylimines is described, in which silyldichloromethyllithiums, generated from silyldichloromethanes in the presence of lithium diisopropylamide, undergo nucleophilic addition with aryl nitriles and subsequent [1,3]-aza-Brook rearrangement to give dichlorocarbanions bearing α-N-silyl imine (or their 1-azaenolate equivalents), which are then trapped by tert-butanesulfinylimines via an aza-Darzens-type transformation, affording enantioenriched 2-chloro-2-aroylaziridines after acidic hydrolysis of the N-silyl imine group. The stereochemistry of this cascade reaction can be tuned by selecting appropriate silyl groups on the silyldichloromethanes and altering the order of addition of the imines and the hexamethylphosphoramide additive.
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Affiliation(s)
| | | | - Chong-Dao Lu
- ‡Department of Chemistry and Applied Chemistry, Changji University, Changji 831100, China
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9
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Shibata N, Nishimine T, Shibata N, Tokunaga E, Kawada K, Kagawa T, Aceña JL, Sorochinsky AE, Soloshonok VA. Asymmetric Mannich reaction between (S)-N-(tert-butanesulfinyl)-3,3,3-trifluoroacetaldimine and malonic acid derivatives. Stereodivergent synthesis of (R)- and (S)-3-amino-4,4,4-trifluorobutanoic acids. Org Biomol Chem 2014; 12:1454-62. [PMID: 24445698 DOI: 10.1039/c3ob42425a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Inorganic as well as organic base catalysis was found to be effective for diastereoselective Mannich additions of malonic acid derivatives to (SS)-N-(tert-butanesulfinyl)-3,3,3-trifluoroacetaldimine. In the presence of catalytic amounts of inorganic bases, n-BuLi or DMAP, the reaction gives the corresponding (R,SS)-β-aminomalonates in good yield and with diastereoselectivity up to 9/1 dr. In contrast, phosphazene bases favour the formation of the (S,SS)-diastereomer with selectivities as high as 99/1. Simple choosing of an appropriate base catalyst for the Mannich addition reaction allowed us to obtain enantiomerically pure (R)- or (S)-configured 3-amino-4,4,4-trifluorobutanoic acids after hydrolysis and decarboxylation of the corresponding β-aminomalonates.
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Affiliation(s)
- Norio Shibata
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.
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10
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Degennaro L, Trinchera P, Luisi R. Recent advances in the stereoselective synthesis of aziridines. Chem Rev 2014; 114:7881-929. [PMID: 24823261 DOI: 10.1021/cr400553c] [Citation(s) in RCA: 326] [Impact Index Per Article: 32.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Leonardo Degennaro
- Department of Pharmacy-Drug Sciences, University of Bari "A. Moro" , Via Edoardo Orabona 4, Bari 70125, Italy
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11
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Wu L, Xie C, Mei H, Soloshonok VA, Han J, Pan Y. Highly efficient and generalized asymmetric synthesis of quaternary stereogenic carbon-containing β-amino indanones/indanoles via Mannich-type additions between 1-indanones and N-tert-butanesulfinylketimines. Org Biomol Chem 2014; 12:4620-7. [DOI: 10.1039/c4ob00489b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1-Indanone and acetophenone derived enolates undergo Mannich-type reactions with ketimines in up to 98% yields and >99 : 1 diastereoselectivities.
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Affiliation(s)
- Lingmin Wu
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
| | - Chen Xie
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
| | - Haibo Mei
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
| | - Vadim A. Soloshonok
- Department of Organic Chemistry I
- Faculty of Chemistry
- University of the Basque Country UPV/EHU
- 20018 San Sebastian, Spain
- IKERBASQUE
| | - Jianlin Han
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
- Institute for Chemistry & BioMedical Sciences
- Nanjing University
| | - Yi Pan
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing, China
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12
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Morris WJ, Muppalla KK, Cowden C, Ball RG. Stereoselective Addition of 2-Phenyloxazol-4-yl Trifluoromethanesulfonate to N-Sulfinyl Imines: Application to the Synthesis of the HCV Protease Inhibitor Boceprevir. J Org Chem 2012; 78:706-10. [DOI: 10.1021/jo301856f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- William J. Morris
- Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065,
United States
| | - Kiran K. Muppalla
- Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065,
United States
| | - Cameron Cowden
- Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065,
United States
| | - Richard G. Ball
- Department of Process Research, Merck Research Laboratories, Rahway, New Jersey 07065,
United States
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13
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Callebaut G, Mangelinckx S, Van der Veken P, Törnroos KW, Augustyns K, De Kimpe N. Asymmetric synthesis of γ-chloro-α,β-diamino- and β,γ-aziridino-α-aminoacylpyrrolidines and -piperidines via stereoselective Mannich-type additions of N-(diphenylmethylene)glycinamides across α-chloro-N-sulfinylimines. Beilstein J Org Chem 2012; 8:2124-31. [PMID: 23243474 PMCID: PMC3520569 DOI: 10.3762/bjoc.8.239] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Accepted: 11/08/2012] [Indexed: 11/23/2022] Open
Abstract
The asymmetric synthesis of new chiral γ-chloro-α,β-diaminocarboxylamide derivatives by highly diastereoselective Mannich-type reactions of N-(diphenylmethylene)glycinamides across chiral α-chloro-N-p-toluenesulfinylaldimines was developed. The resulting (SS,2S,3S)-γ-chloro-α,β-diaminocarboxylamides were formed with the opposite enantiotopic face selectivity as compared to the (SS,2R,3R)-γ-chloro-α,β-diaminocarboxyl esters obtained via Mannich-type addition of analogous N-(diphenylmethylene)glycine esters across a chiral α-chloro-N-p-toluenesulfinylaldimine. Selective deprotection under different acidic reaction conditions and ring closure of the γ-chloro-α,β-diaminocarboxylamides was optimized, which resulted in Nα-deprotected syn-γ-chloro-α,β-diaminocarboxylamides, N-sulfinyl-β,γ-aziridino-α-aminocarboxylamide derivatives, a trans-imidazolidine, and an Nα,Nβ-deprotected syn-γ-chloro-α,β-diaminocarboxylamide.
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Affiliation(s)
- Gert Callebaut
- Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium, Tel: +32 (0)9 264 59 51
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14
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Colpaert F, Mangelinckx S, Denolf B, De Kimpe N. Rearrangement of N-tert-Butanesulfinyl α-Halo Imines with Alkoxides to N-tert-Butanesulfinyl 2-Amino Acetals as Precursors of N-Protected and N-Unprotected α-Amino Carbonyl Compounds. J Org Chem 2012; 77:6023-32. [DOI: 10.1021/jo300752c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Filip Colpaert
- Department of Sustainable Organic
Chemistry and Technology,
Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Sven Mangelinckx
- Department of Sustainable Organic
Chemistry and Technology,
Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Bram Denolf
- Department of Sustainable Organic
Chemistry and Technology,
Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
| | - Norbert De Kimpe
- Department of Sustainable Organic
Chemistry and Technology,
Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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15
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Edupuganti R, Davis FA. Synthesis and applications of masked oxo-sulfinamides in asymmetric synthesis. Org Biomol Chem 2012; 10:5021-31. [PMID: 22576951 DOI: 10.1039/c2ob25345c] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This short perspective reports on the synthesis and applications of a class of chiral amino carbonyl compounds, masked oxo-sulfinamides where the amine is protected with an N-sulfinyl moiety and the carbonyl group is protected as the ketal or 1,3-dithiane. These polyfunctionalized chiral building blocks are prepared by addition of organometallic reagents to masked oxo-sulfinimines (N-sulfinyl imines) or the addition of oxo-organometallic reagents and lithio-1,3-dithianes to sulfinimines. Because unmasking of the amino and carbonyl groups results in cyclic imines, these chiral building blocks are particularly useful for the asymmetric synthesis of functionalized nitrogen heterocycles, including prolines, pipecolic acids, pyrrolidines, homotropinones, tropinones, and tropane alkaloids such as cocaine and C-1 cocaine analogues.
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16
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Zhang Z, Shi M. Silver(I)-catalyzed tandem 1,3-acyloxy migration/Mannich-type addition/elimination of the sulfonyl group of N-sulfonylhydrazone-propargylic esters to 5,6-dihydropyridazin-4-one derivatives. Chemistry 2012; 18:3654-8. [PMID: 22354865 DOI: 10.1002/chem.201103404] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Indexed: 11/11/2022]
Abstract
The addition of nucleophiles to C=N bonds offers a highly efficient synthetic strategy for accessing nitrogen-containing molecules.1 Among the well-developed addition reactions, such as the highly efficient Mannich reaction, various C-H bond-activated compounds including carboxylic acid derivatives, nitroalkanes, and terminal alkynes have been applied as nucleophiles to achieve different classes of amines.2 However, employing new nucleophiles without activated C-H bonds, such as internal alkynes and allenic esters are limited when using metal catalysts.3 Herein, we wish to report a new addition of allenic esters to C=N bonds initiated by a silver-catalyzed 1,3-migration of propargylic esters.
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Affiliation(s)
- Zhen Zhang
- Laboratory for Advanced Materials & Institute of Fine Chemicals, East China University of Science and Technology, 130 Mei Long Road, Shanghai 200237, PR China
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17
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Zhang DH, Zhang Z, Shi M. Transition metal-catalyzed carbocyclization of nitrogen and oxygen-tethered 1,n-enynes and diynes: synthesis of five or six-membered heterocyclic compounds. Chem Commun (Camb) 2012; 48:10271-9. [DOI: 10.1039/c2cc34739c] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Skoda EM, Davis GC, Wipf P. Allylic Amines as Key Building Blocks in the Synthesis of (E)-Alkene Peptide Isosteres. Org Process Res Dev 2012; 16:26-34. [PMID: 22323894 PMCID: PMC3272643 DOI: 10.1021/op2002613] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Nucleophilic imine additions with vinyl organometallics have developed into efficient, high yielding, and robust methodologies to generate structurally diverse allylic amines. We have used the hydrozirconation-transmetalation-imine addition protocol in the synthesis of allylic amine intermediates for peptide bond isosteres, phosphatase inhibitors, and mitochondria-targeted peptide mimetics. The gramicidin S-derived XJB-5-131 and JP4-039 and their analogs have been prepared on up to 160 g scale for preclinical studies. These (E)-alkene peptide isosteres adopt type II' β-turn secondary structures and display impressive biological properties, including selective reactions with reactive oxygen species (ROS) and prevention of apoptosis.
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Affiliation(s)
- Erin M. Skoda
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Gary C. Davis
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Peter Wipf
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA 15260, USA
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19
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Robak MT, Herbage MA, Ellman JA. Synthesis and applications of tert-butanesulfinamide. Chem Rev 2010; 110:3600-740. [PMID: 20420386 DOI: 10.1021/cr900382t] [Citation(s) in RCA: 908] [Impact Index Per Article: 64.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- MaryAnn T Robak
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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20
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Colpaert F, Mangelinckx S, Leemans E, Denolf B, De Kimpe N. Asymmetric synthesis of new chiral N-sulfinyl 2,2-disubstituted aziridines by Grignard additions across α-chloro N-sulfinyl ketimines. Org Biomol Chem 2010; 8:3251-8. [DOI: 10.1039/c001471k] [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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21
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Mori T, Higashibayashi S, Goto T, Kohno M, Satouchi Y, Shinko K, Suzuki K, Suzuki S, Tohmiya H, Hashimoto K, Nakata M. Total synthesis of siomycin A: construction of synthetic segments. Chem Asian J 2008; 3:984-1012. [PMID: 18464237 DOI: 10.1002/asia.200800032] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
The five practical segments for the total synthesis of siomycin A, that is, the dehydropiperidine segment A (5), the pentapeptide segment B (3), the dihydroquinoline segment C (6), and the beta-phenylselenoalanine dipeptide segments D (7) and E (4), were synthesized. Segment A (5) was constructed by the coupling of the azomethine ylide and the chiral sulfinimine, followed by the stereoselective reduction of the six-membered imine function. Segment B (3) was synthesized by the phenylselenylation of the beta-lactone, stereoselective vinylzinc addition to the chiral sulfinimine, and oxazoline-thioamide conversion. Segment C (6) was prepared by the one-pot olefination of the tetrahydroquinoline N-oxide using triflic anhydride and triethylamine, stereoselective reduction of the methyl ketone function, and regioselective Yb(OTf)(3)-catalyzed epoxide opening by the amino group. Segments D (7) and E (4) were synthesized by coupling of the properly protected beta-phenylselenoalanines.
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Affiliation(s)
- Tomonori Mori
- Department of Applied Chemistry, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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22
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Han J, Ai T, Nguyen T, Li G. Chiral N-phosphonyl imine chemistry: asymmetric additions of ester enolates for the synthesis of beta-amino acids. Chem Biol Drug Des 2008; 72:120-6. [PMID: 18631372 PMCID: PMC2575089 DOI: 10.1111/j.1747-0285.2008.00682.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chiral phosphonyl imines attached by 1-naphthyl protection group were found to react with lithium ester enolates smoothly and give chiral beta-amino esters in good yields (70-88%) and up to excellent diastereoselectivity (>99:1 dr). Triisopropoxytitanium (IV) chloride was found to enhance diastereoseletivity when used as the Lewis acid promoter. The chiral auxiliary can be readily removed by treating with HBr to give free amino esters. The absolute structure has been unambiguously determined by converting one of the products into an authentic sample. This reaction provides an easy access to beta-amino acid derivatives.
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Affiliation(s)
- Jianlin Han
- Deprrtment of Chemistry & Biochemistry, Texas Tech University Lubbock, TX, 79401−1061 USA
| | - Teng Ai
- Deprrtment of Chemistry & Biochemistry, Texas Tech University Lubbock, TX, 79401−1061 USA
| | - Thao Nguyen
- Deprrtment of Chemistry & Biochemistry, Texas Tech University Lubbock, TX, 79401−1061 USA
| | - Guigen Li
- Deprrtment of Chemistry & Biochemistry, Texas Tech University Lubbock, TX, 79401−1061 USA
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23
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Hjelmgaard T, Faure S, Lemoine P, Viossat B, Aitken DJ. Rapid Assembly of the Polyhydroxylated β-Amino Acid Constituents of Microsclerodermins C, D, and E. Org Lett 2008; 10:841-4. [DOI: 10.1021/ol702962z] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Thomas Hjelmgaard
- Laboratoire de Synthèse et Etude de Systèmes d'Intérêt Biologique, SEESIB (UMR 6504 - CNRS), Université Blaise Pascal - Clermont-Ferrand 2, 24 avenue des Landais, 63177 Aubière cedex, France, Laboratoire de Cristallographie et RMN Biologiques (UMR 8015 - CNRS), Université René Descartes - Paris 5, 4 avenue de l'Observatoire, 75270 Paris cedex 06, France, and Laboratoire de Synthèse Organique et Méthodologie, ICMMO (UMR 8182 - CNRS), Université Paris-Sud 11, Bât. 420, 15 rue Georges Clemenceau, 91405
| | - Sophie Faure
- Laboratoire de Synthèse et Etude de Systèmes d'Intérêt Biologique, SEESIB (UMR 6504 - CNRS), Université Blaise Pascal - Clermont-Ferrand 2, 24 avenue des Landais, 63177 Aubière cedex, France, Laboratoire de Cristallographie et RMN Biologiques (UMR 8015 - CNRS), Université René Descartes - Paris 5, 4 avenue de l'Observatoire, 75270 Paris cedex 06, France, and Laboratoire de Synthèse Organique et Méthodologie, ICMMO (UMR 8182 - CNRS), Université Paris-Sud 11, Bât. 420, 15 rue Georges Clemenceau, 91405
| | - Pascale Lemoine
- Laboratoire de Synthèse et Etude de Systèmes d'Intérêt Biologique, SEESIB (UMR 6504 - CNRS), Université Blaise Pascal - Clermont-Ferrand 2, 24 avenue des Landais, 63177 Aubière cedex, France, Laboratoire de Cristallographie et RMN Biologiques (UMR 8015 - CNRS), Université René Descartes - Paris 5, 4 avenue de l'Observatoire, 75270 Paris cedex 06, France, and Laboratoire de Synthèse Organique et Méthodologie, ICMMO (UMR 8182 - CNRS), Université Paris-Sud 11, Bât. 420, 15 rue Georges Clemenceau, 91405
| | - Bernard Viossat
- Laboratoire de Synthèse et Etude de Systèmes d'Intérêt Biologique, SEESIB (UMR 6504 - CNRS), Université Blaise Pascal - Clermont-Ferrand 2, 24 avenue des Landais, 63177 Aubière cedex, France, Laboratoire de Cristallographie et RMN Biologiques (UMR 8015 - CNRS), Université René Descartes - Paris 5, 4 avenue de l'Observatoire, 75270 Paris cedex 06, France, and Laboratoire de Synthèse Organique et Méthodologie, ICMMO (UMR 8182 - CNRS), Université Paris-Sud 11, Bât. 420, 15 rue Georges Clemenceau, 91405
| | - David J. Aitken
- Laboratoire de Synthèse et Etude de Systèmes d'Intérêt Biologique, SEESIB (UMR 6504 - CNRS), Université Blaise Pascal - Clermont-Ferrand 2, 24 avenue des Landais, 63177 Aubière cedex, France, Laboratoire de Cristallographie et RMN Biologiques (UMR 8015 - CNRS), Université René Descartes - Paris 5, 4 avenue de l'Observatoire, 75270 Paris cedex 06, France, and Laboratoire de Synthèse Organique et Méthodologie, ICMMO (UMR 8182 - CNRS), Université Paris-Sud 11, Bât. 420, 15 rue Georges Clemenceau, 91405
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24
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Denolf B, Leemans E, De Kimpe N. Asymmetric Synthesis of Aziridines by Reduction ofN-tert-Butanesulfinyl α-Chloro Imines. J Org Chem 2007; 72:3211-7. [PMID: 17397222 DOI: 10.1021/jo0624795] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reduction of (RS)-N-tert-butanesulfinyl alpha-halo imines afforded chiral aziridines in good to excellent yields. Upon reduction of (RS)-N-tert-butanesulfinyl alpha-halo imines with NaBH4 in THF, in the presence of 10 equiv of MeOH, (RS,S)-beta-halo sulfinamides were formed in excellent yield (up to 98%) with very good stereoselectivity (>98:2). Simple treatment of the latter (RS,S)-beta-halo-tert-butanesulfinamides with KOH afforded the corresponding (RS,S)-N-(tert-butylsulfinyl)aziridines in quantitative yields. On the contrary, its epimer, (RS,R)-N-(tert-butylsulfinyl)aziridine was synthesized by switchover of the reducing agent from NaBH4 to LiBHEt3. (RS,R)-N-(tert-Butylsulfinyl)aziridines were synthesized in good yields (up to 85%) and diastereoselectivity (up to 92:8) by reduction of (RS)-N-tert-butanesulfinyl alpha-halo imines with LiBHEt3 in dry THF and subsequent treatment with KOH. All chiral aziridines were obtained as a single diastereomer after recrystallization (overall yield up to 91%) or after flash chromatography.
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Affiliation(s)
- Bram Denolf
- Department of Organic Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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25
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Denolf B, Mangelinckx S, Törnroos KW, De Kimpe N. Asymmetric Synthesis of Cyclopropylamines Starting from N-Sulfinyl α-Chloro Ketimines. Org Lett 2007; 9:187-90. [PMID: 17217261 DOI: 10.1021/ol0622054] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Treatment of novel chiral N-sulfinyl alpha-chloro ketimines with Grignard reagents resulted in the synthesis of chiral N-(1-substituted cyclopropyl)-tert-butanesulfinamides in acceptable to good yields and diastereoselectivity via 1,3-dehydrohalogenation and subsequent addition of the Grignard reagent to the intermediate cyclopropylideneamine. Only in the case of allylmagnesium chloride did the reaction lead to aziridines in high yield. Further deprotection toward N-unprotected 1-substituted cyclopropylamines was established, and the absolute configuration was determined. [reaction: see text].
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Affiliation(s)
- Bram Denolf
- Department of Organic Chemistry, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Ghent, Belgium
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26
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Wang H, Zhao X, Li Y, Lu L. Solvent-controlled asymmetric Strecker reaction: stereoselective synthesis of alpha-trifluoromethylated alpha-amino acids. Org Lett 2006; 8:1379-81. [PMID: 16562896 DOI: 10.1021/ol0601186] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Stereoselective approaches to alpha-trifluoromethylated alpha-amino acids (alpha-Tfm AAs) have been developed. The stereoconfigurations of the resulting alpha-Tfm AA precursors were well controlled by using different solvents. The optically active (S)-2-amino-2-phenyl-1,1,1-trifluoropropanoic acid was synthesized by this method.
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Affiliation(s)
- Hua Wang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Road, Shanghai 200032, PRC
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27
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Dotsenko VV, Krivokolysko SG, Chernega AN, Litvinov VP. An Efficient Mannich-Type One-Pot Synthesis of 3,5,7,11-Tetraazatricyclo [7.3.1.02,7]tridec-2-ene Derivatives Starting from Functionalized 1,4-Dihydropyridines. MONATSHEFTE FUR CHEMIE 2006. [DOI: 10.1007/s00706-006-0569-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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28
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29
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Denolf B, Mangelinckx S, Törnroos KW, De Kimpe N. Use of α-Chlorinated N-(tert-Butanesulfinyl)imines in the Synthesis of Chiral Aziridines. Org Lett 2006; 8:3129-32. [PMID: 16805569 DOI: 10.1021/ol0611245] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text] Reaction of chiral alpha-chloro tert-butanesulfinyl aldimines with Grignard reagents efficiently afforded beta-chloro N-sulfinamides in high diastereomeric excess. The latter compounds were cyclized toward the corresponding chiral aziridines in a high-yielding one-pot reaction or after separate treatment with base. The diastereoselectivity obtained in the newly synthesized beta-chloro sulfinamides is explained via the coordinating ability of the alpha-chloro atom with magnesium resulting in the opposite stereochemical outcome as generally observed for nonfunctionalized N-sulfinyl imines.
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Affiliation(s)
- Bram Denolf
- Department of Organic Chemistry, Faculty of Bioscience Engineering, Ghent University, Belgium
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30
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Addition of titanium ester enolates to aldimines containing a chiral α-methylbenzylamine moiety: synthesis of chiral syn-β-amino esters. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.04.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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31
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Reversal of diastereoselection in the addition of Grignard reagents to chiral 2-pyridyl tert-butyl (Ellman) sulfinimines. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.07.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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32
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Higashibayashi S, Kohno M, Goto T, Suzuki K, Mori T, Hashimoto K, Nakata M. Synthetic studies on thiostrepton family of peptide antibiotics: synthesis of the pentapeptide segment containing dihydroxyisoleucine, thiazoline and dehydroamino acid. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.03.099] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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33
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Sorochinsky A, Voloshin N, Markovsky A, Belik M, Yasuda N, Uekusa H, Ono T, Berbasov DO, Soloshonok VA. Convenient asymmetric synthesis of beta-substituted alpha,alpha-difluoro-beta-amino acids via Reformatsky reaction between Davis' N-sulfinylimines and ethyl bromodifluoroacetate. J Org Chem 2003; 68:7448-54. [PMID: 12968899 DOI: 10.1021/jo030082k] [Citation(s) in RCA: 75] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enantiopure Davis' N-sulfinylimines were found to be efficient as chiral imine equivalents in the high-temperature Reformatsky-type additions with BrZnCF(2)COOEt affording an efficient approach to the enantiomerically pure alpha,alpha-difluoro-beta-amino acids. High chemical and stereochemical yields (drs > 9:1, and as high as 99:1) render this method immediately useful for preparing the target amino acids.
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Affiliation(s)
- Alexander Sorochinsky
- Institute of Bioorganic Chemistry and Petrochemistry, Ukrainian Academy of Sciences, Kiev-94, 253660, Ukraine.
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34
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Koriyama Y, Nozawa A, Hayakawa R, Shimizu M. Reversal of diastereofacial selectivity in the nucleophilic addition reaction to chiral N-sulfinimine and application to the synthesis of indrizidine 223AB. Tetrahedron 2002. [DOI: 10.1016/s0040-4020(02)01250-4] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Tang TP, Ellman JA. Asymmetric synthesis of beta-amino acid derivatives incorporating a broad range of substitution patterns by enolate additions to tert-butanesulfinyl imines. J Org Chem 2002; 67:7819-32. [PMID: 12398509 DOI: 10.1021/jo025957u] [Citation(s) in RCA: 152] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Addition of Ti(Oi-Pr)(3) ester enolates to tert-butanesulfinyl aldimines and ketimines provided beta-substituted, alpha,beta- and beta,beta-disubstituted, alpha,beta,beta- and alpha,alpha,beta-trisubstituted, and alpha,alpha,beta,beta-tetrasubstituted beta-amino acid derivatives in high yields and with high diastereoselectivites. The N-sulfinyl-beta-amino ester products were further employed as versatile intermediates for both standard solution-phase and solid-phase synthetic transformations, including the synthesis of beta-peptide foldamers.
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Affiliation(s)
- Tony P Tang
- Center for New Directions in Organic Synthesis and the Department of Chemistry, University of California, Berkeley 94720-1460, USA
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36
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37
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Soloshonok VA, Ohkura H, Sorochinsky A, Voloshin N, Markovsky A, Belik M, Yamazaki T. Convenient, large-scale asymmetric synthesis of β-aryl-substituted α,α-difluoro-β-amino acids. Tetrahedron Lett 2002. [DOI: 10.1016/s0040-4039(02)01103-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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38
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Plobeck N, Powell D. Asymmetric synthesis of diarylmethylamines by diastereoselective addition of organometallic reagents to chiral N-tert-butanesulfinimines: switchover of diastereofacial selectivity. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s0957-4166(02)00099-x] [Citation(s) in RCA: 100] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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39
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40
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Bharatam PV, Amita, Kaur D. Theoretical studies on the S?N interaction in sulfinamides. J PHYS ORG CHEM 2002. [DOI: 10.1002/poc.465] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Tang TP, Volkman SK, Ellman JA. Asymmetric synthesis of protected 1,2-amino alcohols using tert-butanesulfinyl aldimines and ketimines. J Org Chem 2001; 66:8772-8. [PMID: 11749605 DOI: 10.1021/jo0156868] [Citation(s) in RCA: 101] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
tert-Butanesulfinyl aldimines and ketimines bearing an alpha-benzyloxy or alpha-silyloxy substituent serve as precursors in the synthesis of protected 1,2-amino alcohols in high yields and diastereoselectivities. General protocols are described for the addition of unbranched alkyl, branched alkyl, and aryl organometallic reagents to N-sulfinyl aldimines 1 and 2 and ketimines 5 and 6. Furthermore, the selective N- or O-deprotection of sulfinamide products 3, 4, 7, and 8 is described, enabling further synthetic transformations of the reaction products.
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Affiliation(s)
- T P Tang
- Department of Chemistry, University of California-Berkeley, Berkeley, CA 94720-1460, USA
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42
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Asensio A, Bravo P, Crucianelli M, Farina A, Fustero S, Soler J, Meille S, Panzeri W, Viani F, Volonterio A, Zanda M. Synthesis of Nonracemic α-Trifluoromethyl α-Amino Acids from Sulfinimines of Trifluoropyruvate. European J Org Chem 2001. [DOI: 10.1002/1099-0690(200104)2001:8<1449::aid-ejoc1449>3.0.co;2-2] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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43
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Clive DL, Huang X. Stereocontrolled formation of spiro enones by radical cyclization of bromo acetals. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(01)00226-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Vicario JL, Badía D, Carrillo L. Asymmetric synthesis of beta-substituted alpha-methyl-beta-amino esters by Mannich reaction of (S,S)-(+)-pseudoephedrine acetamide derived enolate with imines. Org Lett 2001; 3:773-6. [PMID: 11259059 DOI: 10.1021/ol0155384] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
[reaction: see text]. The reaction of an (S,S)-(+)-pseudoephedrine acetamide based enolate with several imines afforded smoothly and with full stereochemical control a series of beta-substituted alpha-methyl-beta-aminoamides that upon hydrolysis/esterification afforded the corresponding beta-aminoester derivatives in good yields and in almost enantiomerically pure form.
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Affiliation(s)
- J L Vicario
- Departamento de Química Orgánica II, Facultad de Ciencias, Universidad del País Vasco-Euskal Herriko Unibertsitatea, P.O. Box E-644, 48080 Bilbao, Spain
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45
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Kobayashi S, Ishitani H, Yamashita Y, Ueno M, Shimizu H. A novel chiral zirconium catalyst for enantioselective aldol and Mannich-type reactions. Catalytic activation of both aldehydes and imines using a similar chiral Lewis acid. Tetrahedron 2001. [DOI: 10.1016/s0040-4020(00)01038-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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46
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Ishitani H, Ueno M, Kobayashi S. Enantioselective Mannich-Type Reactions Using a Novel Chiral Zirconium Catalyst for the Synthesis of Optically Active β-Amino Acid Derivatives. J Am Chem Soc 2000. [DOI: 10.1021/ja001642p] [Citation(s) in RCA: 190] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Haruro Ishitani
- Contribution from the Graduate School of Pharmaceutical Sciences, The University of Tokyo, CREST, Japan Science and Technology Corporation (JST), Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Masaharu Ueno
- Contribution from the Graduate School of Pharmaceutical Sciences, The University of Tokyo, CREST, Japan Science and Technology Corporation (JST), Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Shū Kobayashi
- Contribution from the Graduate School of Pharmaceutical Sciences, The University of Tokyo, CREST, Japan Science and Technology Corporation (JST), Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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47
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Additions of enantiopure alpha-sulfinyl carbanions to (S)-N-sulfinimines: asymmetric synthesis of beta-amino sulfoxides and beta-alphamino alcohols. J Org Chem 2000; 65:2856-62. [PMID: 10814170 DOI: 10.1021/jo9903858] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The addition of the lithium anions derived from (R)- and (S)-methyl and -ethyl p-tolyl sulfoxides to (S)-N-benzylidene-p-toluenesulfinamide provides an easy access route to enantiomerically pure beta-(N-sulfinyl)amino sulfoxides. Stereoselectivity can be achieved when the configurations at the sulfur atoms of the two reagents are opposite (matched pair), thus resulting in only one diastereoisomer, even for the case in which two new chiral centers are created. The N-sulfinyl group primarily controls the configuration of the carbon bonded to the nitrogen, whereas the configuration of the alpha-sulfinyl carbanion seems to be responsible for the level of asymmetric induction, as well as for the configuration of the new stereogenic C-SO carbon in the reactions with ethyl p-tolyl sulfoxides. An efficient method for transforming the obtained beta-(N-sulfinyl)amino sulfoxides into optically pure beta-amino alcohols, based on the stereoselective non-oxidative Pummerer reaction, is also reported.
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48
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Palomo C, Oiarbide M, González-Rego MC, Sharma AK, García JM, González A, Landa C, Linden A. α-Oxymethyl Ketone Enolates for the Asymmetric Mannich Reaction. From Acetylene andN-Alkoxycarbonylimines toβ-Amino Acids. Angew Chem Int Ed Engl 2000. [DOI: 10.1002/(sici)1521-3757(20000317)112:6<1105::aid-ange1105>3.0.co;2-h] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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49
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Khiar N, Fernández I, Alcudia A, Alcudia F. Recent advances in the stereoselective synthesis of chiral sulfoxides. ADVANCES IN SULFUR CHEMISTRY 2000. [DOI: 10.1016/s1874-5296(00)80016-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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50
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Zhou P, Chen BC, Davis FA. Syntheses and reactions of sulfinimines. ADVANCES IN SULFUR CHEMISTRY 2000. [DOI: 10.1016/s1874-5296(00)80020-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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