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Zhang S, Wang Z, Gao Y, Yamaguchi M, Bao M. Palladium-catalyzed C-H dimethylamination of 1-chloromethyl naphthalenes with N, N-dimethylformamide as the dimethyl amino source. Org Biomol Chem 2023; 21:6687-6692. [PMID: 37547926 DOI: 10.1039/d3ob00600j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/08/2023]
Abstract
Palladium-catalyzed remote C-H dimethylamination of 1-chloromethylnaphthalenes using N,N-dimethylformamide as the dimethylamino source is described for the first time. The dimethylamination took place exclusively at the 4-position of 1-chloromethylnaphthalenes in 2-methyltetrahydrofuran under mild conditions to afford 1-(N,N-dimethylamino)-4-alkylnaphthalenes in good to high yields. The halogen atom remained intact during the dimethylamination of 1-chloromethylnaphthalenes. A P,N bidentate ligand was conveniently synthesized and successfully utilized as the ligand in the Kumada-Corriu reaction.
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Affiliation(s)
- Sheng Zhang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China.
| | - Ziyang Wang
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China.
| | - Ya Gao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China.
| | - Masahiko Yamaguchi
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China.
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China.
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2
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Yadav SB, Sekar N. Linear, nonlinear optical properties and structure-property relationships in ESIPT-rhodols. COMPUT THEOR CHEM 2022. [DOI: 10.1016/j.comptc.2022.113806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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3
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Triphenylamine and N-phenyl carbazole-based coumarin derivatives: Synthesis, solvatochromism, acidochromism, linear and nonlinear optical properties. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111937] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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4
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Halder S, Kumari S, Kumar S, Aswal VK, Saha SK. Fluorescence Resonance Energy Transfer, Small-Angle Neutron Scattering, and Dynamic Light Scattering Study on Interactions of Gemini Surfactants Having Different Spacer Groups with Protein at Various Regions of Binding Isotherms. ACS OMEGA 2018; 3:11192-11204. [PMID: 31459229 PMCID: PMC6645604 DOI: 10.1021/acsomega.8b01471] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2018] [Accepted: 09/03/2018] [Indexed: 06/07/2023]
Abstract
The binding interactions of three gemini surfactants having different spacer groups (12-4-12, 12-8-12, and 12-4(OH)-12) with a high concentration (150 μM) of bovine serum albumin (BSA) at various regions of binding isotherms have been studied by means of steady-state fluorescence and fluorescence anisotropy, time-correlated single-photon counting fluorescence of trans-2-[4-(dimethylamino)styryl]benzothiazole, small-angle neutron scattering (SANS), and dynamic light scattering (DLS) measurements. The fluorescence resonance energy transfer phenomenon between the twisted intramolecular charge transfer fluorescent molecule, trans-2-[4-(dimethylamino)styryl]benzothiazole as an acceptor, and tryptophan 213 (Trp-213) of BSA as a donor has been successfully used to probe the binding interactions of gemini surfactants with protein at all regions of binding isotherms. The increasing order of energy transfer efficiency at a higher concentration range of surfactants is 12-8-12 > 12-4-12 > 12-4(OH)-12. Stronger binding of micelles of gemini surfactant molecules having a comparatively more hydrophobic spacer group with the hydrophobic segments of the protein results in closer approach of trans-2-[4-(dimethylamino)styryl]benzothiazole molecules solubilized in micelles to Trp-213. The average excited-state lifetimes become shorter with a trend of increase in contribution from the fast component and decrease in contribution from the slow component to the decay with increasing concentration of a surfactant. The nonradiative rate constant of trans-2-[4-(dimethylamino)styryl]benzothiazole increases with increasing concentration of a surfactant because the average microenvironment around it in protein-surfactant aggregates is more polar as compared to that in native protein. SANS and DLS measurements were carried out for the study of the structural deformations in the protein, on enhancement of the concentration of the gemini surfactants. The necklace and bead model has been used for the analysis of SANS data for the protein-surfactant complexes. At a higher concentration range, 12-8-12 and 12-4-12 have a slightly smaller fractal dimension and a larger correlation length as compared to 12-4(OH)-12. DLS data show that the increasing order of hydrodynamic diameter for the complexes of protein with three gemini surfactants in their high concentration range is 12-4(OH)-12 < 12-4-12 < 12-8-12.
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Affiliation(s)
- Sayantan Halder
- Department
of Chemistry, Birla Institute of Technology
& Science (BITS), Pilani, Pilani Campus, Pilani, 333 031 Rajasthan, India
| | - Sunita Kumari
- Department
of Chemistry, Birla Institute of Technology
& Science (BITS), Pilani, Pilani Campus, Pilani, 333 031 Rajasthan, India
| | - Sugam Kumar
- Solid
State Physics Division, Bhabha Atomic Research
Centre (BARC), Trombay, Mumbai, 400085 Maharashtra, India
| | - Vinod K. Aswal
- Solid
State Physics Division, Bhabha Atomic Research
Centre (BARC), Trombay, Mumbai, 400085 Maharashtra, India
| | - Subit K. Saha
- Department
of Chemistry, Birla Institute of Technology
& Science (BITS), Pilani, Pilani Campus, Pilani, 333 031 Rajasthan, India
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Yang M, Xu D, Xi W, Wang L, Zheng J, Huang J, Zhang J, Zhou H, Wu J, Tian Y. Aggregation-Induced Fluorescence Behavior of Triphenylamine-Based Schiff Bases: The Combined Effect of Multiple Forces. J Org Chem 2013; 78:10344-59. [DOI: 10.1021/jo401719c] [Citation(s) in RCA: 127] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Mingdi Yang
- College
of Chemistry and Chemical Engineering, Key Laboratory of Functional
Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
- School
of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, P. R. China
| | - Dongling Xu
- College
of Chemistry and Chemical Engineering, Key Laboratory of Functional
Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Wengang Xi
- College
of Chemistry and Chemical Engineering, Key Laboratory of Functional
Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Lianke Wang
- College
of Chemistry and Chemical Engineering, Key Laboratory of Functional
Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Jun Zheng
- Center
of Modern Experimental Technology, Anhui University, Hefei 230039, P. R. China
| | - Jing Huang
- School
of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, P. R. China
| | - Jingyan Zhang
- School
of Materials and Chemical Engineering, Anhui Jianzhu University, Hefei 230601, P. R. China
| | - Hongping Zhou
- College
of Chemistry and Chemical Engineering, Key Laboratory of Functional
Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Jieying Wu
- College
of Chemistry and Chemical Engineering, Key Laboratory of Functional
Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
| | - Yupeng Tian
- College
of Chemistry and Chemical Engineering, Key Laboratory of Functional
Inorganic Materials Chemistry of Anhui Province, Anhui University, Hefei 230601, P. R. China
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Binding and Fluorescence Resonance Energy Transfer (FRET) of Ruthenium(II)-Bipyridine-Calixarene System with Proteins—Experimental and Docking Studies. J Fluoresc 2012; 22:1345-56. [DOI: 10.1007/s10895-012-1074-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Accepted: 05/29/2012] [Indexed: 02/07/2023]
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Paul BK, Guchhait N. Spectroscopic probing of location and dynamics of an environment-sensitive intramolecular charge transfer probe within liposome membranes. J Colloid Interface Sci 2011; 363:529-39. [DOI: 10.1016/j.jcis.2011.07.074] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2011] [Revised: 07/20/2011] [Accepted: 07/21/2011] [Indexed: 01/08/2023]
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8
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Paul BK, Guchhait N. Morphological transition of the host-structure influences solvent-relaxation: a wavelength-selective fluorescence exploration through environment-sensitive intramolecular charge transfer photophysics. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2011; 81:590-597. [PMID: 21764363 DOI: 10.1016/j.saa.2011.06.056] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Revised: 06/15/2011] [Accepted: 06/20/2011] [Indexed: 05/31/2023]
Abstract
Here, we report the modulation of photo-induced intramolecular charge transfer (ICT) photophysics of N,N-dimethylaminonaphthyl-acrylo-nitrile (DMANAN) associated with sphere-to-rod structural transition of SDS micelles induced by increasing ionic strength of the medium. Emphasis is rendered on the exploration of solvent-relaxation associated with this transition on the basis of wavelength-selective fluorescence technique which includes monitoring of red-edge excitation shift (REES) and excitation/emission anisotropy profiles. Based on micropolarity determination and organization of solvent water around the probe microenvironment we argue that the present results advocate for rod-shaped micelles to be a better mimic for membrane bilayers than spherical micelles.
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Affiliation(s)
- Bijan Kumar Paul
- Department of Chemistry, University of Calcutta, 92, A.P.C. Road, Kolkata 700009, West Bengal, India
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Paul BK, Guchhait N. A spectral deciphering of the binding interaction of an intramolecular charge transfer fluorescence probe with a cationic protein: thermodynamic analysis of the binding phenomenon combined with blind docking study. Photochem Photobiol Sci 2011; 10:980-91. [DOI: 10.1039/c0pp00309c] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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10
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Fluorescent Probing of Protein Bovine Serum Albumin Stability and Denaturation Using Polarity Sensitive Spectral Response of a Charge Transfer Probe. J Fluoresc 2010; 21:365-74. [DOI: 10.1007/s10895-010-0725-y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2010] [Accepted: 09/08/2010] [Indexed: 10/19/2022]
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11
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Deb N, Bagchi S, Mukherjee AK. Charge transfer complex formation between TX-100/CCl4reverse micelle and a series of π-electron acceptors: determination of cmc and aggregation number. Mol Phys 2010. [DOI: 10.1080/00268971003762126] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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12
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Paul BK, Samanta A, Guchhait N. Exploring Hydrophobic Subdomain IIA of the Protein Bovine Serum Albumin in the Native, Intermediate, Unfolded, and Refolded States by a Small Fluorescence Molecular Reporter. J Phys Chem B 2010; 114:6183-96. [DOI: 10.1021/jp100004t] [Citation(s) in RCA: 167] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Bijan Kumar Paul
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Calcutta 700009, India
| | - Anuva Samanta
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Calcutta 700009, India
| | - Nikhil Guchhait
- Department of Chemistry, University of Calcutta, 92 A. P. C. Road, Calcutta 700009, India
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Ghosh S, Guchhait N. Fluorescent Probing of Urea-induced Chemical Unfolding of Bovine Serum Albumin by Intramolecular Charge Transfer Fluorescence Probe E-3-(4-Dimethylamino-Naphthalen-1-yl)-Acrylic Acid. Photochem Photobiol 2010; 86:290-6. [DOI: 10.1111/j.1751-1097.2009.00665.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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