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Topomeric aza/thia cryptands: synthesis and theoretical aspects of in/out isomerism using n-alkyl bridging Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/17 Ian S. Taschner; Tia L. Walker; Sharath Chandra M.; Briana R. Schrage; Christopher J. Ziegler; Xinfeng Gao; Steven E. Wheeler
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Rh(III)-Catalyzed switchable C–H functionalization of 2-(1H-pyrazol-1-yl)pyridine with internal alkynes Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/25 Shaonan Wu; Zhuo Wang; Dianxue Ma; Chen Chen; Bolin Zhu
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The origin of regioselectivity in Cu-catalyzed hydrocarbonylative coupling of alkynes with alkyl halides Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/25 Shengnan Liu; Jianbiao Liu; Qiong Wang; Jin Wang; Fang Huang; Wenjuan Wang; Chuanzhi Sun; Dezhan Chen
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Direct synthesis of annulated indoles through palladium-catalyzed double alkylations Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/24 Yadong Gao; Jianhua Li; Songlin Bai; Daoquan Tu; Chao Yang; Zhiwen Ye; Bingcheng Hu; Xiangbing Qi; Chao Jiang
A facile, one-step synthesis of annulated indoles from (N–H) indoles and dibromoalkanes was developed through a palladium-catalyzed double alkylation process. The reaction proceeds through a palladium-catalyzed norbornene-mediated C2-alkylation of indoles and subsequent regioselective cyclization. The reaction is compatible with various indole substituents, as well as a range of simple and functionalized
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Access to branched allylsilanes by nickel-catalyzed regioselective hydrosilylation of allenes Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/21 Jia-Hao Zeng; Jun-Jia Chen; Li Chen; Zhuang-Ping Zhan
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Nidulaxanthone A, a xanthone dimer with a heptacyclic 6/6/6/6/6/6/6 ring system from Aspergillus sp.-F029 Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/05 Fuqian Wang; Jie Jiang; Song Hu; Xincai Hao; You-sheng Cai; Ying Ye; Haoran Ma; Weiguang Sun; Lu Cheng; Chuanqi Huang; Hucheng Zhu; Hong Zhang; Geng Zhang; Yonghui Zhang
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Palladium-catalyzed cross-coupling of (hetero)aryl or alkenyl sulfonates with aryl titanium as the multi-functional reagent Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/03 Hang Wai Lee; Chau Ming So; On Ying Yuen; Wing Tak Wong; Fuk Yee Kwong
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Lithium amide catalyzed hydroboration of nitriles Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/03 Pradip Ghosh; Axel Jacobi von Wangelin
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Dual reactivity of B(C6F5)3 enables the silylative cascade conversion of N-aryl piperidines to sila-N-heterocycles: DFT calculations Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/27 Miaomiao Zhou; Sehoon Park; Li Dang
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Synthesis of tricyclo[7.2.1.09,10]dodecan-11-one core ring systems of norditerpenoid alkaloids and racemulosine Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/27 Su-Yan Cao; Hui-Jie Yue; Meng-Qian Zhu; Liang Xu
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Synthesis of naphtho[1′,2′:4,5]imidazo[1,2-a]pyridines via Rh(III)-catalyzed C–H functionalization of 2-arylimidazo[1,2-a]pyridines with cyclic 2-diazo-1,3-diketones featuring with a ring opening and reannulation Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/26 Bin Li; Nana Shen; Yujie Yang; Xinying Zhang; Xuesen Fan
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Photoinduced synthesis of alkylalkynyl sulfones through a reaction of potassium alkyltrifluoroborates, sulfur dioxide, and alkynyl bromides Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/26 Xinxing Gong; Min Yang; Jin-Biao Liu; Fu-Sheng He; Jie Wu
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A metal-free aromatic cascade for the synthesis of diverse heterocycles Org. Chem. Front. (IF 5.076) Pub Date : 2020/01/02 Steven C. Schlitzer; Dhanarajan Arunprasath; Katelyn G. Stevens; Indrajeet Sharma
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Transition-metal-free aerobic C–O bond formation via C–N bond cleavage Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/30 Lirong Guo; Fengting Liu; Liying Wang; Hairui Yuan; Lei Feng; Haifeng Lu; Hongyin Gao
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Toward C2-nitrogenated chromones by copper-catalyzed β-C(sp2)–H N-heteroarylation of enaminones Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/23 Tian Luo; Jie-Ping Wan; Yunyun Liu
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Insights into N-heterocyclic carbene and Lewis acid cooperatively catalyzed oxidative [3 + 3] annulation reactions of α,β-unsaturated aldehyde with 1,3-dicarbonyl compounds Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/19 Xinghua Wang; Yang Wang; Jinshuai Song; Donghui Wei
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Synthesis and biological evaluation of suffrutines A, B and their N-fused analogues Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/18 Zefeng Zhu; Chun Chen; Jingxing Jiang; Qianzhong Zhang; Zhibo Du; Shuxian Wei; Xianheng Song; Jie Tang; Jinping Lei; Zhuofeng Ke; Yong Zou
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Construction of spirooxindole-fused spiropyrazolones containing contiguous three stereogenic centres via [3 + 2] annulation utilizing a ferrocene derived bifunctional phosphine catalyst Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/19 Wenjun Luo; Bingxuan Shao; Jingyi Li; Xiao Xiao; Dingguo Song; Fei Ling; Weihui Zhong
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Differential formation of nitrogen-centered radicals leading to unprecedented, regioselective bromination of N,N′-(1,2-phenylene)bisamides and 2-amidophenols Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/13 Damoder Reddy Motati; Dilipkumar Uredi; Amarender Goud Burra; J. Phillip Bowen; Frank R. Fronczek; Clint R. Smith; E. Blake Watkins
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Oxidative N-heterocyclic carbene-catalyzed [3 + 3] annulation reaction of enals with benzofuran-3-ones: efficient access to benzofuran-fused δ-lactones Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/17 Zhan-Yong Wang; Ting Yang; Kai-Kai Wang; Rongxiang Chen; Menghan Liu; Hongxin Liu
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Palladium-catalyzed double carbonylation of propargyl amines and aryl halides to access 1-aroyl-3-aryl-1,5-dihydro-2H-pyrrol-2-ones Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/24 Jun Ying; Zhengjie Le; Zhi-Peng Bao; Xiao-Feng Wu
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The key role of protodeauration in the gold-catalyzed reaction of 1,3-diynes with pyrrole and indole to form complex heterocycles Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/17 Ioannis Stylianakis; Olalla Nieto Faza; Carlos Silva López; Antonios Kolocouris
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The interplay of conformations and electronic properties in N-aryl phenothiazines Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/11 Laura Mayer; Lars May; Thomas J. J. Müller
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Chelation-assisted transition metal-catalysed C–H chalcogenylations Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/11 Wenbo Ma; Nikolaos Kaplaneris; Xinyue Fang; Linghui Gu; Ruhuai Mei; Lutz Ackermann
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Copper-catalyzed tandem phosphorylative allenylation/cyclization of 1-(o-aminophenyl)prop-2-ynols with the P(O)–H species: access to C2-phosphorylmethylindoles Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/10 Xiao-Yan Liu; Yun-Xiang Zou; Hai-Liang Ni; Jing Zhang; Hong-Bo Dong; Long Chen
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HKOCl-4: a rhodol-based yellow fluorescent probe for the detection of hypochlorous acid in living cells and tissues Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/10 Xiaoyu Bai; Bowei Yang; Hansen Chen; Jiangang Shen; Dan Yang
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Expeditious access of chromone analogues via a Michael addition-driven multicomponent reaction Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/06 Jie Lei; Yong Li; Liu-Jun He; Ya-Fei Luo; Dian-Yong Tang; Wei Yan; Hui-Kuan Lin; Hong-yu Li; Zhong-Zhu Chen; Zhi-Gang Xu
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Palladium-catalyzed carbonylative transformation of aryl iodides and sulfonyl chlorides: convenient access to thioesters Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/26 Xinxin Qi; Zhi-Peng Bao; Xiao-Feng Wu
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Recent progress in C(aryl)–C(alkyl) bond cleavage of alkylarenes Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/26 Peng-Fei Dai; Hua Wang; Xian-Chao Cui; Jian-Ping Qu; Yan-Biao Kang
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Ynamides enabled 6-, 7-, and 8-endo-dig iodocyclization of ethoxyethyl ethers: rapid construction of medium-sized oxacycles at room temperature Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/24 Takashi Okitsu; Akihiro Namura; Shinji Kondo; Shoya Tada; Marina Yanagida; Akimori Wada
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Divergent oriented synthesis (DOS) of aza-heterocyclic amides through palladium-catalyzed ketenimination of 2-iodo-N-(propa-1,2-dien-1-yl)anilines Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/21 Xiaoyan Chen; Guanyinsheng Qiu; Renzhi Liu; Dianpeng Chen; Zhiyuan Chen
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Efficient access to fluorescent benzofuro[3,2-b]carbazoles via TFA-promoted cascade annulations of sulfur ylides, 2-hydroxy-β-nitrostyrenes and indoles Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/21 Wenteng Chen; Feng Luo; You Wu; Jie Cen; Jiaan Shao; Yongping Yu
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Cu2O-catalyzed selective 1,2-addition of acetonitrile to α,β-unsaturated aldehydes Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/19 Fengrui Che; Maorong Wang; Chunzheng Yu; Xiangyu Sun; Donghua Xie; Zonghua Wang; Yuexia Zhang
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Construction of cyclopenta[b]pyran-2-ones via chemoselective (3 + 2) cycloaddition between 2-pyrones and vinyl cyclopropanes Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/19 Xuefeng Liang; Weijian Ye; Waygen Thor; Lantian Sun; Bo Wang; Shuzhong He; Yuen-Kit Cheng; Chi-Sing Lee
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Gold-catalyzed domino reactions of alkynol and p-quinone methides: divergent synthesis of fused- and spiro-ketals Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/19 Wenxiu Mao; Shiquan Lin; Liang Zhang; Haifeng Lu; Jiong Jia; Zhenghu Xu
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A Co(II)-catalyzed asymmetric ring opening reaction of spiro-epoxyoxindoles with allylboron Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/18 Liang Wu; Qihang Shao; Li Kong; Jianzhong Chen; Quhao Wei; Wanbin Zhang
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A practical route to azo compounds by metal-free aerobic oxidation of arylhydrazides using an NOx system Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/13 Giwon Jo; Min Hye Kim; Jinho Kim
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Copper-catalyzed asymmetric dearomative alkynylation of isoquinolines Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/11 Xun Kou; Qingyang Zhao; Zheng-Hui Guan
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Light-controlled switchable complexation by a non-photoresponsive hydrogen-bonded amide macrocycle Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/06 Sudarshana Santhosh Kumar Kothapalli; Vijaya Kumar Kannekanti; Zecong Ye; Zhiyao Yang; Lixi Chen; Yimin Cai; Beichen Zhu; Wen Feng; Lihua Yuan
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Discovery of highly functionalized 5,6-seco-grayanane diterpenoids as potent competitive PTP1B inhibitors Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/04 Junfei Zhou; Zhili Zuo; Junjun Liu; Hanqi Zhang; Guijuan Zheng; Guangmin Yao
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Discrete boronate ester ladders from the dynamic covalent self-assembly of oligo(phenylene ethynylene) derivatives and phenylenebis(boronic acid) Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/06 Vasileios Drogkaris; Brian H. Northrop
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Hyperforones A–C, benzoyl-migrated [5.3.1]-type polycyclic polyprenylated acylphloroglucinols from Hypericum forrestii Org. Chem. Front. (IF 5.076) Pub Date : 2020/03/03 Wei-Jia Lu; Wen-Jun Xu; Yan-Qiu Zhang; Yi-Ran Li; Xin Zhou; Qi-Ji Li; Hao Zhang; Jun Luo; Ling-Yi Kong
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Cytotoxic triterpenoids from Antrodia camphorata as sensitizers of paclitaxel Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/11 Bin Li; Yi Kuang; Meng Zhang; Jun-Bin He; Lu-Lu Xu; Chung-Hang Leung; Dik-Lung Ma; Jen-Yu Lo; Xue Qiao; Min Ye
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The synthesis of fluorescent benzofuro[2,3-c]pyridines via palladium-catalyzed heteroaromatic C–H addition and sequential tandem cyclization Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/10 Wenzhang Xiong; Zhongyan Chen; Yinlin Shao; Renhao Li; Kun Hu; Jiuxi Chen
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Divergent syntheses of spirooxindoles from oxindole-embedded four-membered synthon via cycloaddition reactions Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/10 Hongjin Shi; Liang Wang; Shuai-Shuai Li; Yongjun Liu; Lubin Xu
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Organo-catalyzed asymmetric cascade annulation reaction for the construction of bi-spirocyclic pyrazolone and oxindole derivatives Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/07 Bing-Bing Sun; Jun-Bo Chen; Jun-Qi Zhang; Xiao-Peng Yang; Hao-Peng Lv; Zheng Wang; Xing-Wang Wang
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Symmetrical and unsymmetrical fluorine-rich ullazines via controlled cycloaromatizations Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/05 Guoxian Zhang; Prabhat Gautam; Julian M. W. Chan
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A Rh(III)-catalyzed regioselective intermolecular oxa-Pauson–Khand reaction of alkynes, arylboronic acids and CO to form butenolides Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/05 Mi-Na Zhao; Ying Zhang; Ning Ge; Le Yu; Shun Wang; Zhi-Hui Ren; Zheng-Hui Guan
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Stereoselective synthesis of trans-aziridines via intramolecular oxidative C(sp3)–H amination of β-amino ketones Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/04 Chen Tan; Yongguo Liu; Xinyuan Liu; Huanxin Jia; Kun Xu; Sihan Huang; Jingwen Wang; Jiajing Tan
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Cocrystallization with a clip-type molecule catcher: a new method to determine structures of liquid molecules Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/04 Yuezhou Liu; Panpan Chen; Bingbing Shi; Tianyu Jiao; Huaqiang Ju; Peiren Liu; Feihe Huang
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Synthesis of indoline-piperidinones via a novel Ugi, ring expansion, pseudo-Dieckmann condensation and rearrangement cascade reaction Org. Chem. Front. (IF 5.076) Pub Date : 2020/01/22 Jie Lei; Gui-Ting Song; Ya-Fei Luo; Dian-Yong Tang; Wei Yan; Hong-yu Li; Zhong-Zhu Chen; Zhi-Gang Xu
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Straightforward access to densely substituted chiral succinimides through enantioselective organocatalyzed Michael addition of α-alkyl-cyclic ketones to maleimides Org. Chem. Front. (IF 5.076) Pub Date : 2020/02/13 Lai Wei; Li Chen; Franck Le Bideau; Pascal Retailleau; Françoise Dumas
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Synthesis of aromatic terminal allenes and aliphatic terminal alkynes from hydrazones using calcium carbide as an acetylene source Org. Chem. Front. (IF 5.076) Pub Date : 2020/01/23 Lei Gao; Zheng Li
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Palladium-catalyzed C3-selective C–H oxidative carbonylation of imidazo[1,2-a]pyridines with CO and alcohols: a way to access esters Org. Chem. Front. (IF 5.076) Pub Date : 2020/01/23 Shoucai Wang; Siyu Zhang; Meichen Liu; Jiawang Zang; Guangbin Jiang; Fanghua Ji
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Synthesis of 3-phosphinoylbenzofurans via electrophilic phosphination cyclization Org. Chem. Front. (IF 5.076) Pub Date : 2020/01/23 Jia Wang; Yun-Jing Deng; Xin-Xin Yan; Yu-Jie Liu; Chun-Po Ge; Yunhui Yan; Shujun Chao; Ping-Xin Zhou
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Resin-free peptide synthesis mediated by tri(4-benzoylphenyl) phosphate (TBP) derivatives as small-molecule supports Org. Chem. Front. (IF 5.076) Pub Date : 2020/01/21 Haidi Li; Jie Chao; Guang Tian; Jaafar Hasan; Yatao Jin; Zixin Zhang; Chuanguang Qin
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Rhodium-catalyzed ene-cycloisomerization of allylic-sulfide-tethered alkylidenecyclopropanes: DFT analysis of origins of regio- and diastereo-selectivities Org. Chem. Front. (IF 5.076) Pub Date : 2020/01/20 Ting Wang; Shuting Lv; Xianming Guo; Zhanpeng Li; Juan Li
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Synthesis of 4-ethenyl quinazolines via rhodium(III)-catalyzed [5 + 1] annulation reaction of N-arylamidines with cyclopropenones Org. Chem. Front. (IF 5.076) Pub Date : 2020/01/20 Huimin Xing; Jian Chen; Yuesen Shi; Tianle Huang; Li Hai; Yong Wu
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Sulfur-directed palladium-catalyzed C(sp3)–H α-arylation of 3-pyrrolines: easy access to diverse polysubstituted pyrrolidines Org. Chem. Front. (IF 5.076) Pub Date : 2020/01/20 Guangwu Sun; Xi Zou; Jinping Wang; Wen Yang
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