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Hirata G, Takeuchi K, Shimoharai Y, Sumimoto M, Kaizawa H, Nokami T, Koike T, Abe M, Shirakawa E, Nishikata T. Chemistry of Tertiary Carbon Center in the Formation of Congested C-O Ether Bonds. Angew Chem Int Ed Engl 2021; 60:4329-4334. [PMID: 33350568 DOI: 10.1002/anie.202010697] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Revised: 10/09/2020] [Indexed: 11/11/2022]
Abstract
Nucleophilic substitutions, including SN 1 and SN 2, are classical and reliable reactions, but a serious drawback is their intolerance for both bulky nucleophiles and chiral tertiary alkyl electrophiles for the synthesis of a chiral quaternary carbon center. An SRN 1 reaction via a radical species is another conventional method used to carry out substitution reactions of bulky nucleophiles and alkyl halides, but chiral tertiary alkyl electrophiles cannot be used. Therefore, a stereospecific nucleophilic substitution reaction using chiral tertiary alkyl electrophiles and bulky nucleophiles has not yet been well studied. In this paper, we describe the reaction of tertiary alkyl alcohols and non-chiral or chiral α-bromocarboxamides as a tertiary alkyl source for the formation of congested ether compounds possessing two different tertiary alkyl groups on the oxygen atom with stereoretention.
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Affiliation(s)
- Goki Hirata
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Kentarou Takeuchi
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Yusuke Shimoharai
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Michinori Sumimoto
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
| | - Hazuki Kaizawa
- Department of Chemistry and Biotechnology, Graduate School of Engineering (Center for Research on Green Sustainable Chemistry, Faculty of Engineering), Tottori University, 4-101 Koyamachominami, Tottori city, Tottori, 680-8552, Japan
| | - Toshiki Nokami
- Department of Chemistry and Biotechnology, Graduate School of Engineering (Center for Research on Green Sustainable Chemistry, Faculty of Engineering), Tottori University, 4-101 Koyamachominami, Tottori city, Tottori, 680-8552, Japan
| | - Takashi Koike
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, R1-27, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa, 226-8503, Japan
| | - Manabu Abe
- Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan
| | - Eiji Shirakawa
- Department of Applied Chemistry for Environment, School of Science and Technology, Kwansei Gakuin University, Sanda, Hyogo, 669-1337, Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi, 755-8611, Japan
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Hirata G, Takeuchi K, Shimoharai Y, Sumimoto M, Kaizawa H, Nokami T, Koike T, Abe M, Shirakawa E, Nishikata T. Chemistry of Tertiary Carbon Center in the Formation of Congested C−O Ether Bonds. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010697] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Goki Hirata
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Kentarou Takeuchi
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Yusuke Shimoharai
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Michinori Sumimoto
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
| | - Hazuki Kaizawa
- Department of Chemistry and Biotechnology Graduate School of Engineering (Center for Research on Green Sustainable Chemistry, Faculty of Engineering) Tottori University 4-101 Koyamachominami, Tottori city Tottori 680-8552 Japan
| | - Toshiki Nokami
- Department of Chemistry and Biotechnology Graduate School of Engineering (Center for Research on Green Sustainable Chemistry, Faculty of Engineering) Tottori University 4-101 Koyamachominami, Tottori city Tottori 680-8552 Japan
| | - Takashi Koike
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology, R1-27 4259 Nagatsuta-cho, Midori-ku Yokohama Kanagawa 226–8503 Japan
| | - Manabu Abe
- Department of Chemistry Graduate School of Science Hiroshima University, Higashi-Hiroshima Hiroshima 739-8526 Japan
| | - Eiji Shirakawa
- Department of Applied Chemistry for Environment School of Science and Technology Kwansei Gakuin University Sanda Hyogo 669-1337 Japan
| | - Takashi Nishikata
- Graduate School of Science and Engineering Yamaguchi University 2-16-1 Tokiwadai, Ube Yamaguchi 755-8611 Japan
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Mercalli V, Massarotti A, Varese M, Giustiniano M, Meneghetti F, Novellino E, Tron GC. Multicomponent Reaction of Z-Chlorooximes, Isocyanides, and Hydroxylamines as Hypernucleophilic Traps. A One-Pot Route to Aminodioximes and Their Transformation into 5-Amino-1,2,4-oxadiazoles by Mitsunobu–Beckmann Rearrangement. J Org Chem 2015; 80:9652-61. [DOI: 10.1021/acs.joc.5b01676] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Valentina Mercalli
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Alberto Massarotti
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Monica Varese
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
| | - Mariateresa Giustiniano
- Dipartimento
di Farmacia, Università degli Studi di Napoli “Federico II”, via D. Montesano 49, 80131 Napoli, Italy
| | - Fiorella Meneghetti
- Dipartimento
di Scienze Farmaceutiche, Università degli Studi di Milano, Via L. Mangiagalli 25, 20133, Milano, Italy
| | - Ettore Novellino
- Dipartimento
di Farmacia, Università degli Studi di Napoli “Federico II”, via D. Montesano 49, 80131 Napoli, Italy
| | - Gian Cesare Tron
- Dipartimento
di Scienze del Farmaco, Università degli Studi del Piemonte Orientale “A. Avogadro”, Largo Donegani 2, 28100 Novara, Italy
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Singh R, Vince R. 2-Azabicyclo[2.2.1]hept-5-en-3-one: Chemical Profile of a Versatile Synthetic Building Block and its Impact on the Development of Therapeutics. Chem Rev 2012; 112:4642-86. [DOI: 10.1021/cr2004822] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Rohit Singh
- Center for Drug Design, Academic Health Center, University of Minnesota, 516 Delaware Street Southeast,
Minneapolis, MN 55455, United States
| | - Robert Vince
- Center for Drug Design, Academic Health Center, University of Minnesota, 516 Delaware Street Southeast,
Minneapolis, MN 55455, United States
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Hoffman RV, Zhao Z, Costales A, Clarke D. Origins of regioselectivity in the reactions of alpha-lactams with nucleophiles. Two distinct acid-catalyzed pathways involving O- and N-protonation. J Org Chem 2002; 67:5284-94. [PMID: 12126417 DOI: 10.1021/jo020246h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sterically stabilized alpha-lactams react by two distinct acid-catalyzed pathways. Protonation on oxygen results in nucleophilic attack at the acyl carbon and gives C-2 products. Protonation on nitrogen leads to nucleophilic attack at the C-3 carbon and yields C-3 products. The mechanism thus developed is very useful for understanding the changes in rates and product distributions in the reactions of sterically stabilized alpha-lactams with nucleophiles. It can also be extrapolated to other alpha-lactams so that a more coherent picture of alpha-lactam reactivity can be developed.
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Affiliation(s)
- Robert V Hoffman
- Department of Chemistry and Biochemistry, North Horseshoe Drive, New Mexico State University, Las Cruces, New Mexico 88003-8001, USA.
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Synthesis and thermal reorganisations of iminoaziridines. Ab initio calculations of their transition states, of diazatrimethylenemethanes, and some cyclic members of the C2H4N2 potential-energy hypersurface. ACTA ACUST UNITED AC 1995. [DOI: 10.1002/jlac.1995199512303] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bommarius AS, Schwarm M, Stingl K, Kottenhahn M, Huthmacher K, Drauz K. Synthesis and use of enantiomerically pure tert-leucine. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0957-4166(95)00377-0] [Citation(s) in RCA: 218] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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9
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Quast H, Aldenkortt S, Heller E, Schäfer P, Schmitt E. Synthesis and Thermolysis of a Chiral, Non-Racemic Iminoaziridine11. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/cber.19941270921] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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