Co-reporter:Zheng Gu, Yao Tang, and Guo-Fang Jiang
The Journal of Organic Chemistry May 19, 2017 Volume 82(Issue 10) pp:5441-5441
Publication Date(Web):May 4, 2017
DOI:10.1021/acs.joc.7b00463
The di-tert-butyl peroxide (DTBP) induced coupling of arenesulfonylindoles with ethers such as 1,4-dioxane, tetrahydropyran, tetrahydrofuran, and 1,2-dimethoxyethane was studied. The distinguishing feature of this strategy was characterized by capturing in situ generated vinylogous imine intermediates for the C(sp3)–H bond alkylation of ethers. This general procedure presents the major advantages of its wide substrate scope and good functional group compatibility
Co-reporter:Yuan Tian;Shun-Qi Xu;Rong-Ran Liang;Cheng Qian;Xin Zhao
CrystEngComm (1999-Present) 2017 vol. 19(Issue 33) pp:4877-4881
Publication Date(Web):2017/08/21
DOI:10.1039/C7CE00590C
Two novel covalent organic frameworks (COFs) bearing Kagome lattices have been fabricated through the condensations of a D2h symmetrical tetraaldehyde and C2 symmetrical aromatic diamines of various lengths.
Co-reporter:Yao Tang, Guo-Fang Jiang
Tetrahedron Letters 2017 Volume 58, Issue 29(Issue 29) pp:
Publication Date(Web):19 July 2017
DOI:10.1016/j.tetlet.2017.06.024
•A novel light-up fluorescent probe (L1) based on indole derivative and Rhodamine fluorophore for Hg2+ species was developed.•The probe L1 can show a linear response to Hg2+ with high sensitivity and selectivity, and its detection limit was 5.0 × 10−8 M.•Futhermore, probe L1 can be successfully applied to monitor Hg2+ species in living MCF-7 cells by fluorescence imaging.We herein designed and synthesized a light-up fluorescent probe L1 for Hg2+ species, which is based on indole derivative and Rhodamine fluorophore. The new probe can show a linear response to Hg2+ with high sensitivity and selectivity. As the Hg2+ concentration changed from 0 to 450 μM, the fluorescence intensity of L1 at 575 nm changed from 50 to 6181 (∼120-fold). The detection limit of the probe was 5.0 × 10−8 M. Besides, we have successfully applied L1 to monitor Hg2+ species in living MCF-7 cells by way of fluorescence imaging.Download high-res image (67KB)Download full-size image
Co-reporter:Ci-Ping Wang, Guo-Fang Jiang
Tetrahedron Letters 2017 Volume 58, Issue 18(Issue 18) pp:
Publication Date(Web):3 May 2017
DOI:10.1016/j.tetlet.2017.03.060
•High actives.•Wide substrate scope.•Cheap and nontoxic oxidant.•Ten minutes.An efficient method to synthesize isatins based on indoles by using inorganic hypervalent I2O5 has been explored in good yields, which successfully realized the transformation from indoles to isatins under metal-free, mild condition with broad substrate scope.Download high-res image (131KB)Download full-size image
Co-reporter:Yao Tang
New Journal of Chemistry (1998-Present) 2017 vol. 41(Issue 14) pp:6769-6774
Publication Date(Web):2017/07/10
DOI:10.1039/C7NJ01080J
Two-photon imaging, due to its unique advantage to utilize near-infrared light as the excitation source, has emerged as an important tool for biomedical research. Herein, the first NBD amine based two-photon fluorescence probe L using a FRET strategy was developed for detecting H2S in vitro and in vivo. The probe L not only afforded high selectivity and sensitivity for the detection of H2S, but also displayed a linear response to H2S with a low detection limit of 24 nM. Furthermore, the living cell experiments indicated that L can be effective for the both exogenous and endogenous detection of H2S inside living cells by two-photon fluorescence imaging.
Co-reporter:Ji Zhou;Mao-Lin Wang;Xiang Gao;Yong-Gui Zhou
Chemical Communications 2017 vol. 53(Issue 25) pp:3531-3534
Publication Date(Web):2017/03/23
DOI:10.1039/C7CC01072A
A bifunctional squaramide-catalyzed reaction of azlactones with o-quinone methides in situ generated from 2-(1-tosylalkyl)-phenols has been successfully developed under basic conditions, providing an efficient and mild access to chiral dihydrocoumarins bearing adjacent tertiary and quaternary stereogenic centers in high yields with excellent diastereo- and enantioselectivities.
Co-reporter:Zhou-Hao Zhu;Meng-Lin Chen
Organic & Biomolecular Chemistry 2017 vol. 15(Issue 6) pp:1325-1328
Publication Date(Web):2017/02/07
DOI:10.1039/C6OB02655A
An efficient access to optically active sulfahydantoins, 4-aryl-1,2,5-thiadiazolidin-3-one 1,1-dioxides, was developed through palladium-catalyzed asymmetric hydrogenation of the corresponding cyclic N-sulfonylketimines with up to 98% ee.
Co-reporter:Ji Zhou, Qian-Fan Zhang, Wei-Hao Zhao and Guo-Fang Jiang
Organic & Biomolecular Chemistry 2016 vol. 14(Issue 29) pp:6937-6941
Publication Date(Web):20 Jun 2016
DOI:10.1039/C6OB01176D
A chiral phosphoric acid-catalyzed asymmetric transfer hydrogenation of 3-trifluoromethylthioquinolines has been successfully developed, providing direct and facile access to chiral 2,3-disubstituted 1,2,3,4-tetrahydroquinoline derivatives containing a stereogenic trifluoromethylthio group with up to 99% enantioselectivity.
Co-reporter:Cheng Qian;Wei-Hao Zhao;Yuan Tian; Guo-Fang Jiang;Dr. Tian-Guang Zhan; Xin Zhao
Chemistry – An Asian Journal 2016 Volume 11( Issue 6) pp:839-843
Publication Date(Web):
DOI:10.1002/asia.201600018
Abstract
A hexaazatriphenylene (HAT) derivative (compound 1) that bears four n-octyl chains and two thienyl groups was designed and synthesized. Further light-induced oxidation coupling reaction led to thienyl-fused compound 2. Their photophysical and electrochemical properties and self-assembly behavior have been investigated by UV/Vis, fluorescence, and 1H NMR spectroscopies, cyclic voltammetry (CV), scanning electron microscopy (SEM), and powder X-ray diffraction (PXRD). Although the difference in compounds 1 and 2 only lie in one single bond that connects the two thienyl segments, they displayed remarkably different properties, revealing an interesting structure–property relationship.
Co-reporter:Jing Luo, Bo Wu, Mu-Wang Chen, Guo-Fang Jiang, and Yong-Gui Zhou
Organic Letters 2014 Volume 16(Issue 10) pp:2578-2581
Publication Date(Web):May 6, 2014
DOI:10.1021/ol500948r
A concise synthesis of spiro-cyclopropane compounds from indole derivatives and sulfur ylides has been developed via a dearomatization strategy. Moreover, the spiro-cyclopropane compounds could be conveniently transformed to rearomatized indole derivatives in the presence of acids.
Co-reporter:Bo Nie;Tian-Guang Zhan;Tian-You Zhou;Dr. Ze-Yun Xiao; Guo-Fang Jiang; Xin Zhao
Chemistry – An Asian Journal 2014 Volume 9( Issue 3) pp:754-758
Publication Date(Web):
DOI:10.1002/asia.201301522
Abstract
Chiral amplification is an interesting phenomenon in supramolecular chemistry mainly observed in complicated systems in which cooperative effect dominate. Herein, chiral, supramolecular, propeller-like architectures have been constructed through coassembly of an achiral disk-shaped molecule and chiral amino acid derivatives driven by intermolecular hydrogen bonding. Both the “sergeants-and-soldiers” principle and “majority-rules” effect are applicable in these discrete four-component supermolecules, which are the simplest supramolecular system ever reported that exhibit chiral amplification.
Co-reporter:Ji Zhou, Qian-Fan Zhang, Wei-Hao Zhao and Guo-Fang Jiang
Organic & Biomolecular Chemistry 2016 - vol. 14(Issue 29) pp:NaN6941-6941
Publication Date(Web):2016/06/20
DOI:10.1039/C6OB01176D
A chiral phosphoric acid-catalyzed asymmetric transfer hydrogenation of 3-trifluoromethylthioquinolines has been successfully developed, providing direct and facile access to chiral 2,3-disubstituted 1,2,3,4-tetrahydroquinoline derivatives containing a stereogenic trifluoromethylthio group with up to 99% enantioselectivity.
Co-reporter:Ji Zhou, Mao-Lin Wang, Xiang Gao, Guo-Fang Jiang and Yong-Gui Zhou
Chemical Communications 2017 - vol. 53(Issue 25) pp:NaN3534-3534
Publication Date(Web):2017/03/07
DOI:10.1039/C7CC01072A
A bifunctional squaramide-catalyzed reaction of azlactones with o-quinone methides in situ generated from 2-(1-tosylalkyl)-phenols has been successfully developed under basic conditions, providing an efficient and mild access to chiral dihydrocoumarins bearing adjacent tertiary and quaternary stereogenic centers in high yields with excellent diastereo- and enantioselectivities.
Co-reporter:Yuan Tian, Shun-Qi Xu, Cheng Qian, Zhong-Fu Pang, Guo-Fang Jiang and Xin Zhao
Chemical Communications 2016 - vol. 52(Issue 78) pp:NaN11707-11707
Publication Date(Web):2016/09/02
DOI:10.1039/C6CC06637B
A strategy to construct covalent organic frameworks (COFs) bearing two different kinds of pores has been developed, by which two dual-pore COFs were fabricated through the condensation reactions of two D2h symmetrical building blocks. The COFs exhibit good adsorption capacities for CO2 and H2.
Co-reporter:Zhou-Hao Zhu, Meng-Lin Chen and Guo-Fang Jiang
Organic & Biomolecular Chemistry 2017 - vol. 15(Issue 6) pp:NaN1328-1328
Publication Date(Web):2017/01/13
DOI:10.1039/C6OB02655A
An efficient access to optically active sulfahydantoins, 4-aryl-1,2,5-thiadiazolidin-3-one 1,1-dioxides, was developed through palladium-catalyzed asymmetric hydrogenation of the corresponding cyclic N-sulfonylketimines with up to 98% ee.