Co-reporter:Honghe Ji, Yingzu Zhu, Yu Shao, Jing Liu, Yu Yuan, and Xiaodong Jia
The Journal of Organic Chemistry September 15, 2017 Volume 82(Issue 18) pp:9859-9859
Publication Date(Web):August 17, 2017
DOI:10.1021/acs.joc.7b01480
In the presence of catalytic triarylamine radical cation, an sp3–sp2 consecutive C–H functionalization of N-arylglycine amides was achieved, providing a series of isatin derivatives in high yields. In this transformation, the initial aerobic oxidation of the relatively active sp3 C–H bonds triggered the following intramolecular cyclization, in which the aniline group was employed as a removable auxiliary group to enable the consecutive process.
Co-reporter:Xiaodong Jia;Xiaofei Liu;Yu Shao;Yu Yuan;Yingzu Zhu;Wentao Hou;Xuewen Zhang
Advanced Synthesis & Catalysis 2017 Volume 359(Issue 24) pp:4399-4404
Publication Date(Web):2017/12/19
DOI:10.1002/adsc.201700850
AbstractAn efficient phosphorylation of various glycine amides has been developed for radical cation salt-induced C−H functionalization, producing a series of α-aminophosphonates in high yields. Different from reported approaches, trialkyl phosphite was chosen as the phosphorus nucleophile, and the scope investigation shows broad functional group tolerance and high efficiency of the oxidative phosphorylation. This method provides a new way to synthesize α-aminophosphonates.
Co-reporter:Xiaodong Jia;Pengfei Li;Yu Shao;Yu Yuan;Honghe Ji;Wentao Hou;Xiaofei Liu;Xuewen Zhang
Green Chemistry (1999-Present) 2017 vol. 19(Issue 23) pp:5568-5574
Publication Date(Web):2017/11/27
DOI:10.1039/C7GC02775C
A highly selective sp3 C–N cleavage of tertiary anilines was achieved using the TBN/TEMPO catalyst system. When N,N-diaklylanilines (alkyl, benzyl) were employed, the N–CH3 bond was selectively cleaved via radical C–H activation. Moreover, when the allyl group was installed, totally reverse selectivity was observed. It is worth noting that the solvent effect is also crucial to obtain high reaction efficiency and selectivity.
Co-reporter:Xiaodong Jia;Shiwei Lü;Yu Yuan;Xuewen Zhang;Liang Zhang;Liangliang Luo
Organic & Biomolecular Chemistry 2017 vol. 15(Issue 14) pp:2931-2937
Publication Date(Web):2017/04/05
DOI:10.1039/C7OB00446J
A dual removable activating group enabled Povarov reaction of N-arylalanine esters was reported. N-Arylalanine ester was utilized as the sole carbon source to generate N-arylimine and its tautomer, enamine, in situ by aerobic oxidation of sp3 C–H bonds, and then the consecutive reaction delivered the desired quinoline-4-carboxylate esters in high yields.
Co-reporter:Xiaodong Jia, Yingzu Zhu, Yu Yuan, Xuewen Zhang, Shiwei Lü, Liang Zhang, and Liangliang Luo
ACS Catalysis 2016 Volume 6(Issue 9) pp:6033
Publication Date(Web):August 8, 2016
DOI:10.1021/acscatal.6b01781
Directed by the strategy of C–H activation relay (CHAR), an efficient construction of isatin skeleton was developed through catalytic oxidation of glycine esters. The mechanistic study reveals that the oxidation of the relatively active C–H bonds initiated the followed activation of remote and inert C–H bonds, and an intramolecular 1,6-hydrogen shift was involved as a key step.Keywords: 1,6-hydrogen shift; aerobic oxidation; C−H activation; glycine ester; isatin
Co-reporter:Shiwei Lü;Yingzu Zhu;Xingge Ma ;Xiaodong Jia
Advanced Synthesis & Catalysis 2016 Volume 358( Issue 7) pp:1004-1010
Publication Date(Web):
DOI:10.1002/adsc.201500885
Co-reporter:Fang Liu;Liangliang Yu;Shiwei Lv;Junjun Yao;Jing Liu ;Xiaodong Jia
Advanced Synthesis & Catalysis 2016 Volume 358( Issue 3) pp:459-465
Publication Date(Web):
DOI:10.1002/adsc.201500574
Co-reporter:Yingzu Zhu;Shiwei Lü;Xingge Ma;Liang Zhang;Liangliang Luo ;Dr. Xiaodong Jia
Asian Journal of Organic Chemistry 2016 Volume 5( Issue 5) pp:617-620
Publication Date(Web):
DOI:10.1002/ajoc.201600055
Abstract
A Wittig-type reaction was achieved by radical cation salt induced aerobic oxidation of Csp3−H bonds. Different from the “standard” version of the Wittig reaction, in which a carbon-carbon double bond is formed from a carbonyl, carbonyl groups can be installed by similar process.
Co-reporter:Yingzu Zhu;Shiwei Lü;Xingge Ma;Liang Zhang;Liangliang Luo ;Dr. Xiaodong Jia
Asian Journal of Organic Chemistry 2016 Volume 5( Issue 5) pp:
Publication Date(Web):
DOI:10.1002/ajoc.201600127
Co-reporter:Liangliang Luo, Xiaolong Zhao, Liang Zhang, Yu Yuan, Shiwei Lü, Xiaodong Jia
Tetrahedron Letters 2016 Volume 57(Issue 51) pp:5830-5833
Publication Date(Web):21 December 2016
DOI:10.1016/j.tetlet.2016.11.052
•The catalytic oxidation of sp3 CH bonds in glycines was achieved.•The aerobic oxidation is promoted by triarylamine radical cation salt.•A series of functionalized quinazolines were synthesized in good yields.A facile and efficient radical cation salt-induced approach to dihydroquinazoline derivatives has been developed by sp3 CH oxidation, and the method uses readily available glycine esters as the starting material under aerobic oxidation conditions without addition of any additive. The present method provides a convenient and practical route for construction of quinazoline skeleton.
Co-reporter:Jing Liu, Fang Liu, Yingzu Zhu, Xingge Ma, and Xiaodong Jia
Organic Letters 2015 Volume 17(Issue 6) pp:1409-1412
Publication Date(Web):March 10, 2015
DOI:10.1021/acs.orglett.5b00244
Oxidative Povarov reaction of N-benzylanilines was realized under catalytic radical cation salt induced conditions. The mechanism studies revealed that a radical intermediate was involved in this catalytic oxidation. This method provides a new way to synthesize 2,4-diarylquinoline derivatives.
Co-reporter:Yaxin Wang, Fangfang Peng, Jing Liu, Congde Huo, Xicun Wang, and Xiaodong Jia
The Journal of Organic Chemistry 2015 Volume 80(Issue 1) pp:609-614
Publication Date(Web):December 3, 2014
DOI:10.1021/jo502184k
A direct construction of quinoline-fused lactones and lactams was achieved by sp3 C–H bond oxidation of N-aryl glycine esters and amides under catalytic radical cation salt-induced conditions. These polycyclic products are formed in a single step from readily accessible starting materials, and this method provides a new synthetic approach to this class of heterocycles.
Co-reporter:Jing Liu;Yaxin Wang;Liangliang Yu;Congde Huo;Xicun Wang ;Xiaodong Jia
Advanced Synthesis & Catalysis 2014 Volume 356( Issue 14-15) pp:3214-3218
Publication Date(Web):
DOI:10.1002/adsc.201400005
Co-reporter:Xiaodong Jia;Yaxin Wang;Fangfang Peng;Congde Huo;Liangling Yu;Jing Liu ;Xicun Wang
Advanced Synthesis & Catalysis 2014 Volume 356( Issue 6) pp:1210-1216
Publication Date(Web):
DOI:10.1002/adsc.201300810
Co-reporter:Xiaodong Jia, Liangliang Yu, Congde Huo, Yaxin Wang, Jing Liu, Xicun Wang
Tetrahedron Letters 2014 Volume 55(Issue 1) pp:264-266
Publication Date(Web):1 January 2014
DOI:10.1016/j.tetlet.2013.11.010
Aromatization of Hantzch 1,4-dihydropyridines was achieved under radical cation salt induced conditions, in which triarylamine radical cation acts as an efficient catalyst to prompt the aerobic oxidation of 1,4-DHPs in a catalytic way.
Co-reporter:Xiaodong Jia, Fangfang Peng, Chang Qing, Congde Huo, Yaxin Wang, Xicun Wang
Tetrahedron Letters 2013 Volume 54(Issue 36) pp:4950-4952
Publication Date(Web):4 September 2013
DOI:10.1016/j.tetlet.2013.07.014
A tandem cyclization/aromatization of anilines and aldehydes was achieved under catalytic radical cation salt induced conditions, producing a series of 2,3-disubstituted quinolines in good yields. In this reaction, the in situ generated imine tautomerizes to enamine, which acts as a dienophile to participate in the tandem cyclization, and further elimination of the anilino group triggers the aromatization of tetrahydroquinolines, avoiding harsh conditions.
Co-reporter:Xiaodong Jia, Yaxin Wang, Fangfang Peng, Congde Huo, Liangliang Yu, Jing Liu, and Xicun Wang
The Journal of Organic Chemistry 2013 Volume 78(Issue 18) pp:9450-9456
Publication Date(Web):August 16, 2013
DOI:10.1021/jo401018v
A catalytic α-sp3 C–H oxidation of peptides and glycine amides was achieved under radical cation salt catalysis in the presence of O2, producing a series of substituted quinolines. The scope of this reaction shows good functional group tolerance and high efficiency of the oxidative functionalization.
Co-reporter:Xiaodong Jia, Fangfang Peng, Chang Qing, Congde Huo, and Xicun Wang
Organic Letters 2012 Volume 14(Issue 15) pp:4030-4033
Publication Date(Web):July 19, 2012
DOI:10.1021/ol301909g
A domino Csp3–H functionalization of glycine derivatives was achieved under catalytic radical cation salt induced conditions, producing a series of quinolines. The proposed mechanism shows that a peroxyl radical cation, which is generated by the coupling between O2 and TBPA+•, might be involved to initiate the catalytic oxidation.
Co-reporter:Xiaodong Jia, Chang Qing, Congde Huo, Fangfang Peng, Xicun Wang
Tetrahedron Letters 2012 Volume 53(Issue 52) pp:7140-7142
Publication Date(Web):26 December 2012
DOI:10.1016/j.tetlet.2012.10.097
A domino process between iminoethyl glyoxylate and N-vinylamides was achieved under the catalytic radical cation salt induced conditions, producing a series of quinoline-2-carboxylates. N-Vinylamides were involved as an acetylene equivalent. A possible mechanism was proposed to rationalize the formation of the products.
Co-reporter:Xiao Dong Jia, Xiang Ning Chen, Cong De Huo, Fang Fang Peng, Chang Qing, Xi Cun Wang
Chinese Chemical Letters 2012 Volume 23(Issue 3) pp:309-312
Publication Date(Web):March 2012
DOI:10.1016/j.cclet.2011.12.008
Cross double Mannich reaction and tandem cyclization were achieved under iodine catalyzed conditions, yielding a series of highly substituted 4-piperidones. Among the possible diastereomers, only one diastereomer was isolated, which could be ascribed to the chair-like transition state in six-membered ring, in which all of the hindered groups are located in the pseudoequatorial orientation.
Co-reporter:Xiao-Dong Jia;Wen-Juan Wang;Cong-De Huo;Yan Ren;Xiang-Ning Chen;Xiao-Lan Xu;Xi-Cun Wang
Advanced Synthesis & Catalysis 2011 Volume 353( Issue 2-3) pp:315-319
Publication Date(Web):
DOI:10.1002/adsc.201000760
Abstract
A double Mannich reaction followed by tandem cyclization of imines and ketones catalyzed by indium(III) chloride tetrahydrate (InCl3⋅4 H2O) was investigated, and a series of 1,2,6-triaryl-4-piperidones was synthesized in a stereoselective way. In this reaction, aromatic imines substituted by electron-withdrawing groups exhibited high reactivity toward the cyclization to 4-piperidones. A variety of ketones are tolerated in this tandem process, including those that are sterically encumbered.
Co-reporter:Xiao-Dong Jia;Xiang-Ning Chen;Xiao-E Wang;Cong-De Huo;Wen-Juan Wang;Yan Ren ;Xi-Cun Wang
European Journal of Organic Chemistry 2011 Volume 2011( Issue 9) pp:1627-1631
Publication Date(Web):
DOI:10.1002/ejoc.201001607
Abstract
An I2-induced double Mannich reaction and tandem cyclization of imines and ketones was investigated for the synthesis of a series of 1,2,6-triaryl-4-piperidones. During the process of cyclization, only one product was produced out of four possible 4-piperidones. Two pathways involving the balance between chelation effects and hydrogen bonding were proposed to rationalize the formation of the products, which was supported by further investigation of the reaction between β-aminoketones and imines.
Co-reporter:Xiao-Dong Jia, Xiao-E Wang, Cai-Xia Yang, Cong-De Huo, Wen-Juan Wang, Yan Ren and Xi-Cun Wang
Organic Letters 2010 Volume 12(Issue 4) pp:732-735
Publication Date(Web):January 20, 2010
DOI:10.1021/ol9027978
A Mannich reaction of imines and ketones induced by persistent radical cation salts was investigated, and a series of Mannich bases, β-aminoketones, were synthesized. A novel cyclization to form the 4-piperidone skeleton was achieved in a tandem process. The reaction can be rationalized as a radical cation process supported by various evidence.
Co-reporter:Xiao-dong Jia, Yan Ren, Cong-de Huo, Wen-Juan Wang, Xiang-Ning Chen, Xiao-Lan Xu, Xi-cun Wang
Tetrahedron Letters 2010 Volume 51(Issue 51) pp:6779-6782
Publication Date(Web):22 December 2010
DOI:10.1016/j.tetlet.2010.10.106
A tandem cyclization of imines with N-vinyllactams induced by TBPA+ was investigated, and a series of 2-methyl-4-anilino-1,2,3,4-tetrahydroquinolines were synthesized based on a domino process in which N-vinyllactams serve as an acetaldehyde surrogate. A single electron transfer mechanism was proposed and radical cation salt acts as both a Lewis acid and one electron oxidant to induce such transformation.Tandem cyclization of imines and N-vinyllactams induced by TBPA+ was investigated and a series of 2-methyl-4-anilino-1,2,3,4-tetrahydroquinolines were synthesized based on a domino process in which N-vinyllactams serve as an acetaldehyde equivalent. A single electron transfer mechanism was proposed and radical cation salt acts as both a Lewis acid and one electron oxidant to induce such transformation.
Co-reporter:Xiaodong Jia, Xiaoe Wang, Caixia Yang, Yuxia Da, Li Yang, Zhongli Liu
Tetrahedron 2009 65(11) pp: 2334-2338
Publication Date(Web):
DOI:10.1016/j.tet.2009.01.025
Co-reporter:Xiaodong Jia, Shiwei Lü, Yu Yuan, Xuewen Zhang, Liang Zhang and Liangliang Luo
Organic & Biomolecular Chemistry 2017 - vol. 15(Issue 14) pp:NaN2937-2937
Publication Date(Web):2017/03/08
DOI:10.1039/C7OB00446J
A dual removable activating group enabled Povarov reaction of N-arylalanine esters was reported. N-Arylalanine ester was utilized as the sole carbon source to generate N-arylimine and its tautomer, enamine, in situ by aerobic oxidation of sp3 C–H bonds, and then the consecutive reaction delivered the desired quinoline-4-carboxylate esters in high yields.