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Brenna E, Crotti M, Gatti FG, Monti D, Parmeggiani F, Santangelo S. Asymmetric Bioreduction of β-Acylaminonitroalkenes: Easy Access to Chiral Building Blocks with Two Vicinal Nitrogen-Containing Functional Groups. ChemCatChem 2017. [DOI: 10.1002/cctc.201700063] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Elisabetta Brenna
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta”; Politecnico di Milano; Via Mancinelli 7, I- 20131 Milano Italy
- Istituto di Chimica del Riconoscimento Molecolare; C.N.R.; Via Mario Bianco 9, I- 20131 Milano Italy
| | - Michele Crotti
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta”; Politecnico di Milano; Via Mancinelli 7, I- 20131 Milano Italy
| | - Francesco G. Gatti
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta”; Politecnico di Milano; Via Mancinelli 7, I- 20131 Milano Italy
| | - Daniela Monti
- Istituto di Chimica del Riconoscimento Molecolare; C.N.R.; Via Mario Bianco 9, I- 20131 Milano Italy
| | - Fabio Parmeggiani
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta”; Politecnico di Milano; Via Mancinelli 7, I- 20131 Milano Italy
| | - Sara Santangelo
- Dipartimento di Chimica; Materiali ed Ingegneria Chimica “Giulio Natta”; Politecnico di Milano; Via Mancinelli 7, I- 20131 Milano Italy
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Shved AS, Tabolin AA, Novikov RA, Nelyubina YV, Timofeev VP, Ioffe SL. Six-Membered Cyclic Nitroso Acetals: Synthesis and Studies of the Nitrogen Inversion Process ofN-Silyloxy-3,6-dihydro-2H-1,2-oxazines. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600952] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Alexander S. Shved
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences; Leninsky prosp. 47 119991 Moscow Russian Federation
- Higher Chemical College; D. I. Mendeleev University of Chemical Technology of Russia; Miusskaya sq. 9 125047 Moscow Russian Federation
| | - Andrey A. Tabolin
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences; Leninsky prosp. 47 119991 Moscow Russian Federation
| | - Roman A. Novikov
- V. A. Engelhardt Institute of Molecular Biology; Russian Academy of Sciences; Vavilov str. 32 119991 Moscow Russian Federation
| | - Yulia V. Nelyubina
- A. N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; Vavilov str. 28 119991 Moscow Russian Federation
| | - Vladimir P. Timofeev
- V. A. Engelhardt Institute of Molecular Biology; Russian Academy of Sciences; Vavilov str. 32 119991 Moscow Russian Federation
| | - Sema L. Ioffe
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences; Leninsky prosp. 47 119991 Moscow Russian Federation
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3
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Obijalska E, Kowalski MK, Mlostoń G, Linden A, Heimgartner H. Chemoselective trifluoromethylation of the C N group of α-iminoketones derived from arylglyoxals. J Fluor Chem 2014. [DOI: 10.1016/j.jfluchem.2014.09.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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4
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Ansari S, Raabe G, Enders D. Asymmetric Michael addition of 1,3-bis(phenylthio)propan-2-one to nitroalkenes employing Takemoto’s thiourea catalyst. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-012-0915-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Simon J, Chelain E, Brigaud T. Highly Diastereoselective Synthesis of Enantiopure β-Trifluoromethyl β-Amino Alcohols from Chiral Trifluoromethyl Oxazolidines (Fox). Org Lett 2011; 14:604-7. [DOI: 10.1021/ol2032174] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julien Simon
- Laboratoire “Synthèse Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise cedex, France
| | - Evelyne Chelain
- Laboratoire “Synthèse Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise cedex, France
| | - Thierry Brigaud
- Laboratoire “Synthèse Organique Sélective et Chimie bioOrganique” (SOSCO), Université de Cergy-Pontoise, 5 Mail Gay-Lussac 95000 Cergy-Pontoise cedex, France
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Capone S, Kieltsch I, Flögel O, Lelais G, Togni A, Seebach D. ElectrophilicS-Trifluoromethylation of Cysteine Side Chains inα- andβ-Peptides: Isolation of Trifluoro-methylatedSandostatin®(Octreotide) Derivatives. Helv Chim Acta 2008. [DOI: 10.1002/hlca.200890217] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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7
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Sello G, Orsini F, Bernasconi S, Gennaro PD. Synthesis of enantiopure 2-amino-1-phenyl and 2-amino-2-phenyl ethanols using enantioselective enzymatic epoxidation and regio- and diastereoselective chemical aminolysis. ACTA ACUST UNITED AC 2006. [DOI: 10.1016/j.tetasy.2006.01.009] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Novel synthesis of α-nitroalkenes from nitroalkanes via halogenation of intermediate N,N-bis(silyloxy)enamines. Tetrahedron Lett 2005. [DOI: 10.1016/j.tetlet.2005.05.113] [Citation(s) in RCA: 12] [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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9
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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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10
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Hwu JR, Sambaiah T, Liao JH, Chen KL, Wen YS. Novel transformations of gamma-silyl nitro compounds. Org Lett 2001; 3:4267-9. [PMID: 11784194 DOI: 10.1021/ol010237f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Introduction of a gamma-silyl group into nitro compounds of dihydrobenzofuran, dihydrobenzo[b]thiophene, and dihydrofuran allowed new transformations to take place in the presence of a Lewis acid to give the corresponding alpha,beta-unsaturated oximes or multisubstituted dihydrofurans, respectively, in good to excellent yields.[reaction: see text]
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Affiliation(s)
- J R Hwu
- Organosilicon and Synthesis Laboratory, Department of Chemistry, National Tsing Hua University, Hsinchu, Taiwan 30043, Republic of China.
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Volonterio A, Bravo P, Corradi E, Fronza G, Meille SV, Vergani B, Zanda M. Unusual nonchelation controlled allylation of a N -monoprotected α-amino aldehyde: stereoselective entry to nonracemic trifluoromethyl dipeptide isosteres. J Fluor Chem 2001. [DOI: 10.1016/s0022-1139(01)00363-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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12
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Bravo P, Crucianelli M, Ono T, Zanda M. Synthesis and biological activity of β-fluoroalkyl β-amino alcohols. J Fluor Chem 1999. [DOI: 10.1016/s0022-1139(99)00024-x] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Denmark SE, Seierstad M, Herbert B. Tandem Cycloaddition Chemistry of Nitroalkenes: Preparative and Theoretical Studies on the Stereochemical Course of [3 + 2] Cycloaddition of Cyclic Nitronates. J Org Chem 1999; 64:884-901. [PMID: 11674161 DOI: 10.1021/jo9818374] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Intermolecular [3 + 2] cycloadditions between two cyclic nitronates and a series of dipolarophiles are examined. High facial selectivity is observed in all cases and is analyzed with the aid of ab initio transition structure calculations. Monosubstituted dipolarophiles reacted with exclusive regiocontrol. Disubstituted dipolarophiles reacted with varying degrees of regiocontrol, which was dependent on the substituent. A theoretical approach for predicting regioselectivity is discussed. Exo selectivity was generally favored due to steric effects, and was especially high with cis-disubstituted dipolarophiles.
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Affiliation(s)
- Scott E. Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801
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15
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Bravo P, Corradi E, Pesenti C, Vergani B, Viani F, Volonterio A, Zanda M. Stereocontrolled approaches to (+)- and (−)-γ-trifluoromethyl-GABOB, a new hydroxymethylene (statine) dipeptide isostere. ACTA ACUST UNITED AC 1998. [DOI: 10.1016/s0957-4166(98)00397-8] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Volonterio A, Vergani B, Crucianelli M, Zanda M, Bravo P. (R)-Trifluoro- and Difluoropyruvaldehyde N,S-Ketals: Chiral Synthetic Equivalents of beta-Trifluoro and beta-Difluoro alpha-Amino Aldehydes. J Org Chem 1998; 63:7236-7243. [PMID: 11672366 DOI: 10.1021/jo980602p] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new, efficient, and stereoselective two-step approach to stereochemically defined chiral nonracemic gamma-tri- and gamma-difluoro beta-amino alcohols (70% to >95% ee) is described, using tri- and difluoropyruvaldehyde N,S-ketals (R)-1a,b as starting materials. Addition of Grignard reagents to (R)-1 occurs with moderate to excellent anti-stereocontrol, depending on the nature of the organomagnesium halides, providing the beta-p-tolylthio beta-benzyloxycarbonylamino secondary carbinols 5. The stereochemical outcome of these reactions can be rationalized by means of a chelated Cram's cyclic model, where the NCbz group is the chelating ligand and the p-tolylthio residue acts as the stereocontrolling "large" group. Reductive displacement of the 2-p-tolylthio substituent of 5 efficiently takes places by means of the NaBH(4)/pyridine system, probably via the corresponding intermediate transient imines 13, providing sulfur-free gamma-tri- and gamma-difluorinated beta-amino alcohols 7 with high levels of anti-stereoselectivity. A considerable shift toward syn-stereoselectivity was obtained performing the reaction on the corresponding phenylacetates 8. Cleavage and reduction of the NHCbz moiety of 7 provided tri- and difluoro analogues of, respectively, norephedrine (11) and ephedrine (12).
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Affiliation(s)
- Alessandro Volonterio
- C.N.R.-Centro di Studio per le Sostanze Organiche Naturali, Via Mancinelli 7, I-20131 Milano, Italy
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17
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Chiral sulfoxide controlled asymmetric additions to CN double bond. An efficient approach to stereochemically defined α-fluoroalkyl amino compounds. Tetrahedron 1998. [DOI: 10.1016/s0040-4020(98)00779-0] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Uneyama K, Hao J, Amii H. A novel synthesis of β-trifluoromethyl-substituted isoserine via intramolecular rearrangement of imino ethers. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)00663-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
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19
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Ioffe SL, Lyapkalo IM, Tishkov AA, Danilenko VM, Strelenko YA, Tartakovsky VA. β,β′-functionalized N,N-divinyl-N-trimethylsilyloxyamines via silylation of β-substituted aliphatic nitro compounds. The investigation of the mechanism of the process using selective trapping reagents. Tetrahedron 1997. [DOI: 10.1016/s0040-4020(97)00831-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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20
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Bravo P, Farina A, Kukhar VP, Markovsky AL, Meille SV, Soloshonok VA, Sorochinsky AE, Viani F, Zanda M, Zappalà C. Stereoselective Additions of α-Lithiated Alkyl-p-tolylsulfoxides toN-PMP(fluoroalkyl)aldimines. An Efficient Approach to Enantiomerically Pure Fluoro Amino Compounds. J Org Chem 1997. [DOI: 10.1021/jo970004v] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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21
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N-Cbz-Trifluoropyruvaldehyde N,S-ketal: Absolute stereochemistry and addition of Grignard reagents. Highly stereoselective entry to trifluoro analogues of Ephedra alkaloids. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)00209-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Percy JM. Building Block Approaches to Aliphatic Organofluorine Compounds. ORGANOFLUORINE CHEMISTRY 1997. [DOI: 10.1007/3-540-69197-9_4] [Citation(s) in RCA: 101] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Dilman AD, Lyapkalo IM, Strelenko YA, Ioffe SL, Tartakovskii VA. Trimethylsilyl derivatives of aliphatic nitro compounds in α,β-carbon–carbon cross-coupling reactions. MENDELEEV COMMUNICATIONS 1997. [DOI: 10.1070/mc1997v007n04abeh000778] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Affiliation(s)
- Scott E. Denmark
- Roger Adams Laboratory, Department of Chemistry, University of Illinois, Urbana, Illinois 61801
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