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D'Imperio N, Pelliccioli V, Grecchi S, Bossi A, Vasile F, Cauteruccio S, Arkhypchuk AI, Kumar Gupta A, Orthaber A, Ott S, Licandro E. Highly Conjugated Bis(benzo[
b
]phosphole)‐
P
‐oxides: Synthesis and Electrochemical, Optical, and Computational Studies. European J Org Chem 2022. [DOI: 10.1002/ejoc.202201209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Nicolas D'Imperio
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
- Department of Chemistry, Ångström Laboratory Uppsala University Box 523 751 20 Uppsala Sweden
| | - Valentina Pelliccioli
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Sara Grecchi
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Alberto Bossi
- Istituto di Scienze e Tecnologie Chimiche “Giulio Natta” Consiglio Nazionale delle Ricerche (CNR-SCITEC) Via Fantoli 16/15 20138 Milano Italy
- SmartMatLab Center via Golgi 19 I-20133 Milano Italy
| | - Francesca Vasile
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Silvia Cauteruccio
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
| | - Anna I. Arkhypchuk
- Department of Chemistry, Ångström Laboratory Uppsala University Box 523 751 20 Uppsala Sweden
| | - Arvind Kumar Gupta
- Department of Chemistry, Ångström Laboratory Uppsala University Box 523 751 20 Uppsala Sweden
| | - Andreas Orthaber
- Department of Chemistry, Ångström Laboratory Uppsala University Box 523 751 20 Uppsala Sweden
| | - Sascha Ott
- Department of Chemistry, Ångström Laboratory Uppsala University Box 523 751 20 Uppsala Sweden
| | - Emanuela Licandro
- Dipartimento di Chimica Università degli Studi di Milano Via Golgi 19 20133 Milano Italy
- SmartMatLab Center via Golgi 19 I-20133 Milano Italy
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2
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Wang H, Mao X. Evaluation of the Efficacy of Neoadjuvant Chemotherapy for Breast Cancer. DRUG DESIGN DEVELOPMENT AND THERAPY 2020; 14:2423-2433. [PMID: 32606609 PMCID: PMC7308147 DOI: 10.2147/dddt.s253961] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Accepted: 05/07/2020] [Indexed: 12/12/2022]
Abstract
Neoadjuvant chemotherapy is increasingly used in breast cancer, especially for downstaging the primary tumor in the breast and the metastatic axillary lymph node. Accurate evaluations of the response to neoadjuvant chemotherapy provide important information on the impact of systemic therapies on breast cancer biology, prognosis, and guidance for further therapy. Moreover, pathologic complete response is a validated and valuable surrogate prognostic factor of survival after therapy. Evaluations of neoadjuvant chemotherapy response are very important in clinical work and basic research. In this review, we will elaborate on evaluations of the efficacy of neoadjuvant chemotherapy in breast cancer and provide a clinical evaluation procedure for neoadjuvant chemotherapy.
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Affiliation(s)
- Huan Wang
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang City, Liaoning Province, People's Republic of China
| | - Xiaoyun Mao
- Department of Breast Surgery, The First Affiliated Hospital of China Medical University, Shenyang City, Liaoning Province, People's Republic of China
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3
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Xu J. The synthesis and property investigation of π-bridged 9,9′-bifluorenylidene ladder as an electron acceptor. NEW J CHEM 2020. [DOI: 10.1039/c9nj06090a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesized a ladder-type 9,9′-bifluorenylidene dimer with good electron acceptability and demonstrated the π-bridged insertion exhibited significant effects on photophysical and electrochemical properties compared with its macrocyclic counterpart.
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Affiliation(s)
- Jinjia Xu
- Molecular Design & Function Group
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
- Weldon School of Biomedical Engineering
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4
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Obeid NM, Klemmer L, Maus D, Zimmer M, Jeck J, Bejan I, White AJP, Huch V, Jung G, Scheschkewitz D. (Oligo)aromatic species with one or two conjugated Si[double bond, length as m-dash]Si bonds: near-IR emission of anthracenyl-bridged tetrasiladiene. Dalton Trans 2018; 46:8839-8848. [PMID: 28387780 DOI: 10.1039/c7dt00397h] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A series of aryl disilenes Tip2Si[double bond, length as m-dash]Si(Tip)Ar (2a-c) and para-arylene bridged tetrasiladienes, Tip2Si[double bond, length as m-dash]Si(Tip)-LU-Si(Tip)[double bond, length as m-dash]SiTip2 (3a-d) are synthesized by the transfer of the Tip2Si[double bond, length as m-dash]SiTip unit to aryl halides and dihalides by nucleophilic disilenides Tip2Si[double bond, length as m-dash]SiTipLi (Tip = 2,4,6-iPr3C6H2, Ar = aryl substituent, LU = para-arylene linking unit). The scope of the nucleophilic Si[double bond, length as m-dash]Si transfer reaction is demonstrated to also include substrates of considerable steric bulk such as mesityl or duryl halides Ar-X (Ar = Mes = 2,4,6-Me3C6H2; Ar = Dur = 2,3,5,6-Me4C6H, X = Br or I). Bridged tetrasiladienes Tip2Si[double bond, length as m-dash]Si(Tip)-LU-Si(Tip)[double bond, length as m-dash]SiTip2 with more extended linking units surprisingly exhibit fluorescence at room temperature, albeit weak. DFT calculations suggest that partial charge transfer character of the excited state is a possible explanation.
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Affiliation(s)
- Naim M Obeid
- Krupp-Chair of General and Inorganic Chemistry, Saarland University, 66123 Saarbrücken, Germany.
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5
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Esfandiarfard K, Mai J, Ott S. Unsymmetrical E-Alkenes from the Stereoselective Reductive Coupling of Two Aldehydes. J Am Chem Soc 2017; 139:2940-2943. [PMID: 28186736 DOI: 10.1021/jacs.7b00428] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The unprecedented formation of unsymmetrical alkenes from the intermolecular reductive coupling of two different aldehydes is described. In contrast to the McMurry reaction which affords statistical product mixtures, selectivity in the reported procedure is achieved by a sequential ionic mechanism in which a first aldehyde is reacted with a phosphanylphosphonate to afford a phosphaalkene intermediate which, upon activation by hydroxide, reacts with a second aldehyde to the unsymmetrical E-alkenes. The described reaction is free of transition metals and proceeds under ambient temperature within minutes in good to excellent overall yields. It is a new methodology to use feedstock aldehydes for the direct production of C═C double bond-containing products and may impact how chemists think of multistep synthetic sequences in the future.
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Affiliation(s)
- Keyhan Esfandiarfard
- Department of Chemistry, Ångström Laboratory, Uppsala University , Box 523, 75120 Uppsala, Sweden
| | - Juri Mai
- Department of Chemistry, Ångström Laboratory, Uppsala University , Box 523, 75120 Uppsala, Sweden
| | - Sascha Ott
- Department of Chemistry, Ångström Laboratory, Uppsala University , Box 523, 75120 Uppsala, Sweden
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6
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Greulich TW, Yamaguchi E, Doerenkamp C, Lübbesmeyer M, Daniliuc CG, Fukazawa A, Eckert H, Yamaguchi S, Studer A. Synthesis and Physical Properties of Strained Doubly Phosphorus-Bridged Biaryls and Viologens. Chemistry 2017; 23:6029-6033. [PMID: 28074501 DOI: 10.1002/chem.201605272] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Tobias W. Greulich
- Westfälische Wilhelms Universität; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Eriko Yamaguchi
- Department of Chemistry, Graduate School of Science and Institute of Transformative Bio-Molecules (WPI-ITbM); Nagoya University; Furo, Chikusa Nagoya 464-8602 Japan
| | - Carsten Doerenkamp
- Westfälische Wilhelms Universität; Physikalisch-Chemisches Institut; Corrensstrasse 28/30 48149 Münster Germany
| | - Maximilian Lübbesmeyer
- Westfälische Wilhelms Universität; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Westfälische Wilhelms Universität; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
| | - Aiko Fukazawa
- Department of Chemistry, Graduate School of Science and Institute of Transformative Bio-Molecules (WPI-ITbM); Nagoya University; Furo, Chikusa Nagoya 464-8602 Japan
| | - Hellmut Eckert
- Westfälische Wilhelms Universität; Physikalisch-Chemisches Institut; Corrensstrasse 28/30 48149 Münster Germany
- Instituto de Física em Sao Paulo; Universidade de Sade Sao Paulo; IAv. Trabalhador Saocarlense 400 Sao Carlos, S.P. 13560-590 Brazil
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science and Institute of Transformative Bio-Molecules (WPI-ITbM); Nagoya University; Furo, Chikusa Nagoya 464-8602 Japan
| | - Armido Studer
- Westfälische Wilhelms Universität; Organisch-Chemisches Institut; Corrensstrasse 40 48149 Münster Germany
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7
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Shameem MA, Orthaber A. Organophosphorus Compounds in Organic Electronics. Chemistry 2016; 22:10718-35. [DOI: 10.1002/chem.201600005] [Citation(s) in RCA: 156] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Muhammad Anwar Shameem
- Department of Chemistry-Ångström Laboratories; Uppsala University; Box 523 75120 Uppsala Sweden
| | - Andreas Orthaber
- Department of Chemistry-Ångström Laboratories; Uppsala University; Box 523 75120 Uppsala Sweden
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8
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Teng QH, Xu YL, Liang Y, Wang HS, Wang YC, Pan YM. Transition Metal-Free Synthesis of 3-Alkynylpyrrole-2-carboxylatesviaMichael Addition/Intramolecular Cyclodehydration. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501073] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Arkhypchuk AI, Svyaschenko YV, Ott S. Versatile Approach to 3-Phosphahexatrienes Bearing Low Coordinated Phosphorus. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2014.983596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Anna I. Arkhypchuk
- Department of Chemistry Ångström, Uppsala University, Box 523, Uppsala, 75120, Sweden
| | - Yurii V. Svyaschenko
- Department of Chemistry Ångström, Uppsala University, Box 523, Uppsala, 75120, Sweden
| | - Sascha Ott
- Department of Chemistry Ångström, Uppsala University, Box 523, Uppsala, 75120, Sweden
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10
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Zhou Y, Wang S, Chen C, Xi C. Copper-mediated reaction of oxazirconacyclopentenes with dichlorophenylphosphine: a new pathway for the formation of 1,2-oxaphosphole derivatives. RSC Adv 2015. [DOI: 10.1039/c5ra13818c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
CuCl-mediated reaction of oxazirconacyclopentenes with dichlorophenylphosphine afforded dihydrooxaphospholes in high yields, in which the reaction was performed conveniently in one-pot from an alkyne, carbonyl compound and dichlorophosphine.
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Affiliation(s)
- Yiqing Zhou
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Sheng Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Chao Chen
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
| | - Chanjuan Xi
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education)
- Department of Chemistry
- Tsinghua University
- Beijing 100084
- China
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11
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Arkhypchuk AI, Mijangos E, Lomoth R, Ott S. Redox Switching in Ethenyl-Bridged Bisphospholes. Chemistry 2014; 20:16083-7. [DOI: 10.1002/chem.201405525] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2014] [Indexed: 11/11/2022]
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12
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Balalaie S, Baoosi L, Tahoori F, Rominger F, Bijanzadeh HR. Synthesis of functionalized 2,5-dihydro-1,2-oxaphospholes via one-pot three-component reaction. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2014. [DOI: 10.1007/s13738-014-0460-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Arkhypchuk AI, Orthaber A, Mihali VA, Ehlers A, Lammertsma K, Ott S. Oxaphospholes and bisphospholes from phosphinophosphonates and α,β-unsaturated ketones. Chemistry 2013; 19:13692-704. [PMID: 24038188 PMCID: PMC4304286 DOI: 10.1002/chem.201302014] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2013] [Indexed: 12/04/2022]
Abstract
The reaction of a {W(CO)5 }-stabilized phosphinophosphonate 1, (CO)5 WPH(Ph)P(O)(OEt)2 , with ethynyl- (2 a-f) and diethynylketones (7-11, 18, and 19) in the presence of lithium diisopropylamide (LDA) is examined. Lithiated 1 undergoes nucleophilic attack in the Michael position of the acetylenic ketones, as long as this position is not sterically encumbered by bulky (iPr)3 Si substituents. Reaction of all other monoacetylenic ketones with lithiated 1 results in the formation of 2,5-dihydro-1,2-oxaphospholes 3 and 4. When diacetylenic ketones are employed in the reaction, two very different product types can be isolated. If at least one (Me)3 Si or (Et)3 Si acetylene terminus is present, as in 7, 8, and 19, an anionic oxaphosphole intermediate can react further with a second equivalent of ketone to give cumulene-decorated oxaphospholes 14, 15, 24, and 25. Diacetylenic ketones 10 and 11, with two aromatic acetylene substituents, react with lithitated 1 to form exclusively ethenyl-bridged bisphospholes 16 and 17. Mechanisms that rationalize the formation of all heterocycles are presented and are supported by DFT calculations. Computational studies suggest that thermodynamic, as well as kinetic, considerations dictate the observed reactivity. The calculated reaction pathways reveal a number of almost isoenergetic intermediates that follow after ring opening of the initially formed oxadiphosphetane. Bisphosphole formation through a carbene intermediate G is greatly favored in the presence of phenyl substituents, whereas the formation of cumulene-decorated oxaphospholes is more exothermic for the trimethylsilyl-containing substrates. The pathway to the latter compounds contains a 1,3-shift of the group that stems from the acetylene terminus of the ketone substrates. For silyl substituents, the 1,3-shift proceeds along a smooth potential energy surface through a transition state that is characterized by a pentacoordinated silicon center. In contrast, a high-lying transition state TS(E'-F')R=Ph of 37 kcal mol(-1) is found when the substituent is a phenyl group, thus explaining the experimental observation that aryl-terminated diethynylketones 10 and 11 exclusively form bisphospholes 16 and 17.
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Affiliation(s)
- Anna I Arkhypchuk
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala (Sweden)
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14
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Arkhypchuk AI, Svyaschenko YV, Orthaber A, Ott S. Mechanism of the phospha-Wittig-Horner reaction. Angew Chem Int Ed Engl 2013; 52:6484-7. [PMID: 23653134 PMCID: PMC3738942 DOI: 10.1002/anie.201301469] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Revised: 04/03/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Anna I Arkhypchuk
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala, Sweden
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15
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Affiliation(s)
- Annette D. Allen
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
| | - Thomas T. Tidwell
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada
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16
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Arkhypchuk AI, Svyaschenko YV, Orthaber A, Ott S. Mechanism of the Phospha‐Wittig–Horner Reaction. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301469] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anna I. Arkhypchuk
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala (Sweden)
| | - Yurii V. Svyaschenko
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala (Sweden)
| | - Andreas Orthaber
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala (Sweden)
| | - Sascha Ott
- Department of Chemistry, Ångström Laboratories, Uppsala University, Box 523, 751 20 Uppsala (Sweden)
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