1
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Perna FM, Falcicchio A, Salomone A, Milet A, Rizzi R, Hamdoun G, Barozzino‐Consiglio G, Stalke D, Oulyadi H, Capriati V. First Direct Evidence of an
ortho
‐Lithiated Aryloxetane: Solid and Solution Structure, and Dynamics. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900949] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Filippo M. Perna
- Dipartimento di Farmacia‐Scienze del Farmaco Università di Bari “Aldo Moro” Consorzio C.I.N.M.P.I.S. Via E. Orabona 4 70125 Bari Italy
| | - Aurelia Falcicchio
- Istituto di Cristallografia (IC‐CNR) Via Amendola 122/o 70125 Bari Italy
| | - Antonio Salomone
- Dipartimento di Scienze e Tecnologie Biologiche ed Ambientali Università del Salento Prov.le Lecce‐Monteroni 73100 Lecce Italy
| | - Anne Milet
- Université Grenoble Alpes CNRS, DCM 38000 Grenoble France
| | - Rosanna Rizzi
- Istituto di Cristallografia (IC‐CNR) Via Amendola 122/o 70125 Bari Italy
| | - Ghanem Hamdoun
- Normandie Université, UNIROUEN INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038) Rouen France
| | | | - Dietmar Stalke
- Institut für Anorganische Chemie Universität Göttingen Tammannstrasse 6 37077 Göttingen Germany
| | - Hassan Oulyadi
- Normandie Université, UNIROUEN INSA de Rouen, CNRS, Laboratoire COBRA (UMR 6014 & FR 3038) Rouen France
| | - Vito Capriati
- Dipartimento di Farmacia‐Scienze del Farmaco Università di Bari “Aldo Moro” Consorzio C.I.N.M.P.I.S. Via E. Orabona 4 70125 Bari Italy
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2
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Singh P, Shabbani G, Singh AS, Bajaj HC, Suresh E. Regioselective cyclometallation of N-methyl-N-(naphthalen-2-ylmethyl)-2-(pyridin-2-yl)ethanamine with palladium(II) acetate and catalytic reduction of various functional groups. Inorganica Chim Acta 2019. [DOI: 10.1016/j.ica.2018.09.018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Reddy LR, Kotturi S, Waman Y, Patel C, Danidharia M, Shenoy R. Asymmetric Synthesis of α-(Diarylmethyl) Alkyl Amines through Regioselective Lithiation of α-Diarylmethanes and the Diastereoselective Addition to Ellman’s Imines. J Org Chem 2018; 83:6573-6579. [DOI: 10.1021/acs.joc.8b00879] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leleti Rajender Reddy
- Piramal Discovery Solutions, Pharmaceutical Special Economic Zone, Sarkhej Bavla Highway, Ahmedabad, Gujarat 382213, India
| | - Sharadsrikar Kotturi
- Piramal Discovery Solutions, Pharmaceutical Special Economic Zone, Sarkhej Bavla Highway, Ahmedabad, Gujarat 382213, India
| | - Yogesh Waman
- Piramal Discovery Solutions, Pharmaceutical Special Economic Zone, Sarkhej Bavla Highway, Ahmedabad, Gujarat 382213, India
| | - Chirag Patel
- Piramal Discovery Solutions, Pharmaceutical Special Economic Zone, Sarkhej Bavla Highway, Ahmedabad, Gujarat 382213, India
| | - Megha Danidharia
- Piramal Discovery Solutions, Pharmaceutical Special Economic Zone, Sarkhej Bavla Highway, Ahmedabad, Gujarat 382213, India
| | - Rajesh Shenoy
- Piramal Discovery Solutions, Pharmaceutical Special Economic Zone, Sarkhej Bavla Highway, Ahmedabad, Gujarat 382213, India
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4
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Reddy LR, Kotturi S, Waman Y, Patel C, Patwa A, Shenoy R. Diastereoselective addition of anisoles to N-tert-butanesulfinyl imines via four-membered lithium cycles. Chem Commun (Camb) 2018; 54:7007-7009. [DOI: 10.1039/c8cc03764g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A highly regio- and diastereo-selective ortho-lithiation/addition of anisoles to N-tert-butanesulfinyl imines resulting in the selective formation of chiral α-branched amines is described.
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Affiliation(s)
| | | | - Yogesh Waman
- Piramal Discovery Solutions
- Pharmaceutical Special Economic Zone
- Ahmedabad
- India
| | - Chirag Patel
- Piramal Discovery Solutions
- Pharmaceutical Special Economic Zone
- Ahmedabad
- India
| | - Aditya Patwa
- Piramal Discovery Solutions
- Pharmaceutical Special Economic Zone
- Ahmedabad
- India
| | - Rajesh Shenoy
- Piramal Discovery Solutions
- Pharmaceutical Special Economic Zone
- Ahmedabad
- India
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5
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Guo L, Wang S, Wei Y, Zhou S, Zhu X, Mu X. Reactivity of 1,3-Disubstituted Indoles with Lithium Compounds: Substituents and Solvents Effects on Coordination and Reactivity of Resulting 1,3-Disubstituted-2-Indolyl Lithium Complexes. Inorg Chem 2017; 56:6197-6207. [PMID: 28474884 DOI: 10.1021/acs.inorgchem.7b00179] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Reactivity of 1,3-disubstituted indolyl compounds with lithium reagents was studied to reveal the substituents and solvent effects on coordination modes and reactivities resulting in different indolyl lithium complexes. Treatment of 1-alkyl-3-imino functionalized compounds 1-R-3-(R'N═CH)C8H5N [R = Bn, R' = Dipp (HL1); R = Bn, R' = tBu (HL2); R = CH3OCH2, R' = Dipp (HL3); Dipp = iPr2C6H3] with Me3SiCH2Li or nBuLi in hydrocarbon solvents (toluene or n-hexane) produced 1,3-disubstituted-2-indolyl lithium complexes [η1:(μ2-η1:η1)-1-Bn-3-(DippN═CH)C8H4NLi]2 (1), {[η1:(μ3-η1:η1:η1)-1-Bn-3-(tBuN═CH)C8H4N][η2:η1:(μ2-η1:η1)-1-Bn-3-(tBuN═CH)C8H4N][η1:(μ2-η1:η1)-1-Bn-3-(tBuN═CH)C8H4N]Li3} (2), and [η1:η1:(μ2-η1:η1)-1-CH3OCH2-3-(DippN═CH)C8H4NLi]2 (3), respectively. The bonding modes of the indolyl ligand were kept in 1 by coordination with donor solvent, affording [η1:(μ2-η1:η1)-1-Bn-3-(DippN═CH)C8H4NLi(THF)]2 (4). The trinuclear complex 2 was converted to dinuclear form with a change of bonding modes of the indolyl ligand by treatment of 2 with donor solvent THF, producing [η1:(μ2-η1:η1)-1-Bn-3-(tBuN═CH)C8H4NLi(THF)]2 (5). X-ray diffraction established that compounds 1, 3, 4, and 5 crystallized as dinuclear structures with the carbanionic sp2 carbon atoms of the indolyl ligands coordinated to lithium ions in a μ2-η1:η1 manner, while compound 2 crystallized as a trinuclear structure and the carbanionic atoms of the indolyl moieties coordinated to lithium ions in μ2-η1:η1 and μ3-η1:η1:η1 manners. When the lithiation reaction of HL1 with 1 equiv of nBuLi was carried out in THF, the monomeric lithium complex {η1:η1-1-Bn-3-(DippN═CH)-2-[1'-Bn-3'-(DippNCH)C8H5N]C8H4NLi(THF)} (6) having coupled indolyl moieties was obtained. The compound 6 can also be prepared by the reaction of 1 with 0.5 equiv of HL1 with a higher isolated yield. Accordingly, the lithium complexes [η1:η4-1-Bn-3-tBuN═CH-2-(1'-Bn-3'-tBuNCHC8H5N)C8H4NLi(L)] (L = THF, 7a; L = Et2O, 7b) with the coupled indolyl moieties in η4 mode were isolated by treatment of HL2 with 2 in THF or Et2O. All complexes were characterized by spectroscopic methods, and their structures were determined by X-ray diffraction study.
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Affiliation(s)
- Liping Guo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China.,Department of Applied Chemistry and Environmental Engineering, Bengbu College , Bengbu, Anhui 233030, China
| | - Shaowu Wang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , Shanghai 200032, China
| | - Yun Wei
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| | - Shuangliu Zhou
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| | - Xiancui Zhu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
| | - Xiaolong Mu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials, College of Chemistry and Materials Science, Anhui Normal University , Wuhu, Anhui 241000, China
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6
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Davies KS, Linder MK, Kryman MW, Detty MR. Extended rhodamine photosensitizers for photodynamic therapy of cancer cells. Bioorg Med Chem 2016; 24:3908-3917. [PMID: 27246858 DOI: 10.1016/j.bmc.2016.05.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2016] [Revised: 05/12/2016] [Accepted: 05/18/2016] [Indexed: 11/25/2022]
Abstract
Extended thio- and selenorhodamines with a linear or angular fused benzo group were prepared. The absorption maxima for these compounds fell between 640 and 700nm. The extended rhodamines were evaluated for their potential as photosensitizers for photodynamic therapy in Colo-26 cells. These compounds were examined for their photophysical properties (absorption, fluorescence, and ability to generate singlet oxygen), for their dark and phototoxicity toward Colo-26 cells, and for their co-localization with mitochondrial-specific agents in Colo-26 and HUT-78 cells. The angular extended rhodamines were effective photosensitizers toward Colo-26 cells with 1.0Jcm(-2) laser light delivered at λmax±2nm with values of EC50 of (2.8±0.4)×10(-7)M for sulfur-containing analogue 6-S and (6.4±0.4)×10(-8)M for selenium-containing analogue 6-Se. The linear extended rhodamines were effective photosensitizers toward Colo-26 cells with 5 and 10Jcm(-2) of broad-band light (EC50's⩽2.4×10(-7)M).
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Affiliation(s)
- Kellie S Davies
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260-3000, United States.
| | - Michelle K Linder
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260-3000, United States.
| | - Mark W Kryman
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260-3000, United States.
| | - Michael R Detty
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY 14260-3000, United States; Institute for Lasers, Photonics and Biophotonics, Department of Chemistry, State University of New York, Buffalo, NY 14260, United States.
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7
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Kryman MW, McCormick TM, Detty MR. Longer-Wavelength-Absorbing, Extended Chalcogenorhodamine Dyes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00255] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Mark W. Kryman
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
| | - Theresa M. McCormick
- Department
of Chemistry, Portland State University, Portland, Oregon 97207, United States
| | - Michael R. Detty
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, New York 14260-3000, United States
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8
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Sassone FC, Perna FM, Salomone A, Florio S, Capriati V. Unexpected lateral-lithiation-induced alkylative ring opening of tetrahydrofurans in deep eutectic solvents: synthesis of functionalised primary alcohols. Chem Commun (Camb) 2016; 51:9459-62. [PMID: 25959580 DOI: 10.1039/c5cc02884a] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
o-Tolyl-substituted tetrahydrofurans undergo highly regioselective ring opening with the concomitant formation of new C-C bonds as the result of a lateral lithiation reaction. This reaction provides a new method for the synthesis of functionalised primary alcohols and can be run directly in protic eutectic mixtures as benign reaction media at 0 °C and under air, competitively with protonolysis.
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Affiliation(s)
- Francesca C Sassone
- Dipartimento di Farmacia-Scienze del Farmaco, Università di Bari "Aldo Moro", Consorzio C.I.N.M.P.I.S., Via E. Orabona 4, Bari, I-70125, Italy.
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9
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El Ezzi M, Lenk R, Madec D, Sotiropoulos JM, Mallet-Ladeira S, Castel A. A bis-sulfonyl O,C,O aryl pincer ligand and its tin(II) complex: synthesis, structural studies, and DFT calculations. Angew Chem Int Ed Engl 2015; 54:805-8. [PMID: 25429925 DOI: 10.1002/anie.201406283] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 11/07/2014] [Indexed: 11/12/2022]
Abstract
The efficiency of the deprotonated aryl bis-sulfone [2,6-{(p-tolyl)SO2}2C6H3](-) as an O,C,O-coordinating pincer-type ligand was described. The bis-sulfone precursor was synthesized using a straightforward palladium-catalyzed cross-coupling reaction. As a result of directed ortho metalation (DoM) through sulfonyl groups, a selective lithiation of the aryl group was achieved and the corresponding carbanion was isolated and its structure determined by single-crystal X-ray diffraction analysis. A heteroleptic tin(II) complex has been prepared by a nucleophilic substitution reaction. Crystallographic analysis and DFT calculations indicate that the bis-sulfonyl moiety acts as a new O,C,O-coordinating pincer-type ligand with intramolecular S=O coordination to a tin(II) center. The cis form with the two nonbonded oxygen atoms of the sulfonyl groups on the same side is preferentially obtained.
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Affiliation(s)
- Mohammad El Ezzi
- Université de Toulouse, UPS, LHFA, and CNRS, LHFA UMR 5069, 118 Route de Narbonne, 31062 Toulouse (France)
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10
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Danopoulos AA, Braunstein P, Rezabal E, Frison G. Unprecedented directed lateral lithiations of tertiary carbons on NHC platforms. Chem Commun (Camb) 2015; 51:3049-52. [DOI: 10.1039/c4cc08434a] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Deprotonation of the tautomeric mixture of 4-amido-imidazoliums and 4-amino-N-heterocyclic carbenes led to dilithiated dianionic functional NHCs, via an unprecedented regioselective, directed remote lateral lithiation of a tertiary CHMe2 carbon. DFT calculations support that the nature of products is under thermodynamic control.
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Affiliation(s)
- Andreas A. Danopoulos
- Institute for Advanced Study (USIAS)
- Université de Strasbourg (UdS)
- 67081 Strasbourg Cedex
- France
- Laboratoire de Chimie de Coordination
| | - Pierre Braunstein
- Laboratoire de Chimie de Coordination
- Institut de Chimie (UMR 7177 CNRS)
- UdS
- 67081 Strasbourg Cedex
- France
| | - Elixabete Rezabal
- Laboratoire de Chimie Moléculaire
- Ecole Polytechnique and CNRS
- 91128 Palaiseau Cedex
- France
| | - Gilles Frison
- Laboratoire de Chimie Moléculaire
- Ecole Polytechnique and CNRS
- 91128 Palaiseau Cedex
- France
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11
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El Ezzi M, Lenk R, Madec D, Sotiropoulos JM, Mallet-Ladeira S, Castel A. A Bis-Sulfonyl O,C,O Aryl Pincer Ligand and its Tin(II) Complex: Synthesis, Structural Studies, and DFT Calculations. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406283] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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12
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Zenzola M, Degennaro L, Trinchera P, Carroccia L, Giovine A, Romanazzi G, Mastrorilli P, Rizzi R, Pisano L, Luisi R. Harnessing theortho-Directing Ability of the Azetidine Ring for the Regioselective and Exhaustive Functionalization of Arenes. Chemistry 2014; 20:12190-200. [DOI: 10.1002/chem.201403141] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2014] [Indexed: 11/07/2022]
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13
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Capriati V, Florio S, Luisi R. Complexation Phenomena and Dynamics at Work in the Lithiation Reactions of Small-Ring Heterocycles: Regio- and Stereoselectivity. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402744] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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