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Borthakur U, Saikia AK. Bismuth(III)‐Triflate‐Catalyzed Highly Diastereoselective Synthesis of Substituted Tetrahydrothiophene via Tandem Isomerization, Michael and Aldol Reactions. ChemistrySelect 2019. [DOI: 10.1002/slct.201902871] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Upasana Borthakur
- Department of chemistryIndian Institude of technology Guwahati Guwahati 781039 India
| | - Anil K Saikia
- Department of chemistryIndian Institude of technology Guwahati Guwahati 781039 India
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Lee ASY, Lin MC, Wang SH, Lin LS. A Mild Isomerization Reaction for β,γ-Unsaturated Ketone to α,β-Unsaturated Ketone. J CHIN CHEM SOC-TAIP 2013. [DOI: 10.1002/jccs.200400058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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3
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Fury JJ, Robison J, Sedaghat-Herati R. Synthesis and Self-Assembly of New Poly(ethylene glycol)-block-poly(ester-sulfide) Dendrimers. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2013. [DOI: 10.1080/10601325.2013.829358] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Denmark SE, Ares JJ. Stereoselective alkylations of chiral nitro imine and nitro hydrazone dianions. Synthesis of enantiomerically enriched 3-substituted 1-nitrocyclohexenes. J Org Chem 2008; 73:9647-56. [PMID: 18855478 PMCID: PMC3199965 DOI: 10.1021/jo801790r] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Dianions of chiral nitro imines (generated by a combination of LDA and s-BuLi) underwent diastereoselective alkylation with methyl, butyl, isopropyl, allyl, and methallyl iodides. In contrast to the behavior of simple metalloenamines, the most selective auxiliary contained no coordinating groups but did possess a large steric difference between the two substituents. The yield and selectivity of the alkylations were improved by the addition of HMPA or DMPU. The use of (S)-1-naphthylethylamine as the auxiliary afforded the R absolute configuration of the alkylation products. This stereochemical outcome could be rationalized by simple steric approach controlled alkylation in a conformationally fixed, internally coordinated dianion. A SAMP nitro hydrazone gave poorer yields and selectivities.
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Affiliation(s)
- Scott E Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801, USA.
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Tödter C, Lackner H. Synthesis of Azabenzisochromanquinone Antibiotics, I. Hetero Diels-Alder Reactions of Isochromanquinones with 1-Aza-1,3-dienes. European J Org Chem 2006. [DOI: 10.1002/jlac.199619960908] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Müller JFK, Neuburger M, Zehnder M. Structure and reactivity of a sulfoximine-stabilized chiral dilithiocarbanion. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19970800717] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Seebach D, Bossler H, Gründler H, Shoda SI, Wenger R. C-Alkylation of Peptides through Polylithiated and LiCl-Solvated Derivatives Containing Sarcosine Li-Enolate Units. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19910740121] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Seebach D, Kimmerlin T, Šebesta R, Campo MA, Beck AK. How we drifted into peptide chemistry and where we have arrived at. Tetrahedron 2004. [DOI: 10.1016/j.tet.2004.06.043] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Perdicchia D, Licandro E, Maiorana S, Baldoli C, Giannini C. A new ‘one-pot’ synthesis of hydrazides by reduction of hydrazones. Tetrahedron 2003. [DOI: 10.1016/s0040-4020(03)01208-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Regioselective Anionic [3+2] Cyclizations of Imidazole Dinucleophiles with Oxaldiimidoyl Dichlorides − A Combined Experimental and Theoretical Study. European J Org Chem 2001. [DOI: 10.1002/1099-0690(200106)2001:12<2245::aid-ejoc2245>3.0.co;2-c] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Langer P, Döring M, Görls H. Regioselective Synthesis of Heterospirocyclic Isobenzofuranones and Medium-Sized Lactones by Multiple Anion Capture Reactions of 1,3-Dianions. European J Org Chem 2001. [DOI: 10.1002/1099-0690(200104)2001:8<1511::aid-ejoc1511>3.0.co;2-d] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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12
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Tandem Hydroformylation/Aldol Addition of Silyl Enol Ethers Bearing Remote Olefinic Functionalities. Tetrahedron 2000. [DOI: 10.1016/s0040-4020(00)00071-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Crotti P, Di Bussolo V, Favero L, Macchia F, Pineschi M, Napolitano E. Regio- and stereoselectivity in the cyclization of enolates derived from 4,5-, 5,6-, and 6,7-epoxy-1-phenyl-1-alkanones. Competition between C- and O-alkylation. Tetrahedron 1999. [DOI: 10.1016/s0040-4020(99)00226-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Langer P, Wuckelt J, Döring M, Beckert R. Reaction of Ambident Dianions with Oxalic Acid Dielectrophiles – Effect of the Heteroatoms of the Dinucleophile on the Regiochemistry of Cyclization. European J Org Chem 1998. [DOI: 10.1002/(sici)1099-0690(199807)1998:7<1467::aid-ejoc1467>3.0.co;2-h] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Meagher TP, Yet L, Hsiao CN, Shechter H. (E)- and (Z)-1-(Phenylsulfonyl)-4-(trimethylsilyl)-2-butenes: Synthetic Equivalents for the 1-(1,3-Butadienyl) Anion and the 1,1-(1,3-Butadienyl) Dianion. J Org Chem 1998. [DOI: 10.1021/jo970545k] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Timothy P. Meagher
- Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
| | - Larry Yet
- Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
| | - Chi-Nung Hsiao
- Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
| | - Harold Shechter
- Department of Chemistry, The Ohio State University, Columbus, Ohio 43210
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Vaughan WS, Gu HH, McDaniel KF. Reaction of tetracarbonyl(π-allyl)manganese with carbon nucleophiles. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)00227-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Bossler HG, Seebach D. Peptide Enolates.C-Alkylation of Glycine Residues in linear tri-, tetra-, and pentapeptidesvia dilithium azadienediolates. Helv Chim Acta 1994. [DOI: 10.1002/hlca.19940770424] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Asymmetric induction in the thio-claisen rearrangement. Creation of three contiguous stereogenic centres from α-hydroxy ketene dithioacetals. Tetrahedron 1992. [DOI: 10.1016/s0040-4020(01)92192-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Nakahira H, Ryu I, Ikebe M, Kambe N, Sonoda N. β-Lithioketoenolate: Erzeugung und Reaktionen mit Elektrophilen. Angew Chem Int Ed Engl 1991. [DOI: 10.1002/ange.19911030209] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kpegba K, Metzner P, Rakotonirina R. Stéréospécificité de l'addition de Michael d'ènethiolates avec les énones acycliques. Tetrahedron 1989. [DOI: 10.1016/s0040-4020(01)80066-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Seebach D. Structure and Reactivity of Lithium Enolates. From Pinacolone to SelectiveC-Alkylations of Peptides. Difficulties and Opportunities Afforded by Complex Structures. ACTA ACUST UNITED AC 1988. [DOI: 10.1002/anie.198816241] [Citation(s) in RCA: 680] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Seebach D. Struktur und Reaktivität von Lithiumenolaten, vom Pinakolon zur selektivenC-Alkylierung von Peptiden – Schwierigkeiten und Möglichkeiten durch komplexe Strukturen. Angew Chem Int Ed Engl 1988. [DOI: 10.1002/ange.19881001206] [Citation(s) in RCA: 274] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Seebach D, Aebi JD, Gander-Coquoz M, Naef R. Stereoselektive Alkylierung an C(?) von Serin, Glycerins�ure, Threonin und Weins�ure �ber heterocyclische Enolate mit exocyclischer Doppelbindung. Helv Chim Acta 1987. [DOI: 10.1002/hlca.19870700426] [Citation(s) in RCA: 152] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Ethoxyacetylene: A useful building block for the organocopper(I) mediated synthesis of 1,4-diketones. J Organomet Chem 1986. [DOI: 10.1016/0022-328x(86)80015-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Heathcock CH, Montgomery SH. Acyclic stereoselection. 19. Total synthesis of (±)-ristosamine and (±)-megalosamine. Tetrahedron Lett 1983. [DOI: 10.1016/s0040-4039(00)86214-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Pohmakotr M, Reutrakul V, Phongpradit T, Chansri A. DIANION OF DIETHYL SUCCINATE: REACTIONS WITH ALKYLATING AGENTS AND CARBONYL COMPOUNDS. CHEM LETT 1982. [DOI: 10.1246/cl.1982.687] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Seebach D, Pohmakotr M, Schregenberger C, Weidmann B, Mali RS, Pohmakotr S. d5-Reactions of Doubly Deprotonated ?,?-Unsaturated Carbonyl Derivatives with Electrophiles. A Novel Approach to the Synthesis of Tetrahydrofuran and Tetrahydropyran Derivatives. Helv Chim Acta 1982. [DOI: 10.1002/hlca.19820650202] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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