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Org. Chem. Front., 2016, Accepted Manuscript
DOI: 10.1039/C6QO00144K, Research Article
Orthogonal removal of the naphtylmethyl (NAP) and anomeric O-p-methoxyphenyl (PMP) ethers using 2,3-dichloro-5,6-dicyano-1,4-benzoquinone and cerium(IV) ammonium nitrate, respectively, is described. These reactions were tested in the oligosaccharide assembly of biologically...
 
Org. Chem. Front., 2016, Accepted Manuscript
DOI: 10.1039/C6QO00134C, Research Article
Cobalt(III)-catalyzed C-H activation of simple benzoate esters has been achieved, and redox-neutral annulative coupling with internal alkynes allowed efficient synthesis of indeones. The employment of weak and simple ester directing...
 
Org. Chem. Front., 2016, Accepted Manuscript
DOI: 10.1039/C6QO00085A, Research Article
The organic base-catalyzed mechanism of chemical fixation of CO2 with 2-aminobenzonitrile to quinazoline-2,4-(1H,3H)-dione has been studied by means of density functional theory (DFT) calculations on such reaction in the presence...
 
Zeyuan Zhang, Zhen Dai, Xinkun Ma, Yihan Liu, Xiaojun Ma, Wanli Li and Chen Ma
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00040A, Research Article
An efficient Cu-catalyzed cascade reaction protocol was developed for the synthesis of fused oxazepinone derivatives via sp2 C–H and O–H cross-dehydrogenative coupling.
 
Org. Chem. Front., 2016, Accepted Manuscript
DOI: 10.1039/C6QO00137H, Research Article
A copper-catalyzed trifluoromethylation-cyclization of olefinic carbonyls was developed. With this method, a variety of 2,3-dihydrofuran and 3,4-dihydropyran derivatives containing a CF3 group were selectively obtained in moderate to good yields....
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00111D, Research Article
A synthetic method to carbamates from amines and N-tosylhydrazones in the presence of 1 atm of carbon dioxide was developed.
 
Pan Peng, Long Peng, Guangyu Wang, Fangyu Wang, Yi Luo and Aiwen Lei
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00049E, Research Article
A visible light mediated radical C–H phosphorization of benzothiazoles with O2 as the sole oxidant toward the synthesis of arylphosphonates was developed.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00135A, Research Article
A new chiral calix[4]arene-based organocatalyst 3 bearing bis-squaramide moieties was designed and synthesized from p-tert-butylcalix[4]arene. This bifunctional organocatalyst was used in the enantioselective conjugate addition of acetyl acetone to β-nitrostyrenes. The corresponding adducts were obtained in good to excellent yields with high enantioselectivities.
 
Hao-Xiang Hu, Yidong Wang, Deyun Qian, Zhan-Ming Zhang, Lu Liu and Junliang Zhang
Org. Chem. Front., 2016, Accepted Manuscript
DOI: 10.1039/C6QO00087H, Research Article
From themed collection 2015 Emerging Investigators by OCF
The enantioselective intermolecular [2+2] cycloaddition of 3-styrylindoles with N-allenyl oxazolidinone has been achieved for the first time by the employment of Xiang-Phos derived chiral gold-catalyst. The corresponding cycloadducts could be...
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00102E, Research Article
A facile synthetic method to access N-dialkylaminomethyl-2H-1,2,3-triazoles has been developed from N-sulfonyl-1,2,3-triazoles by a base induced reaction. Moreover, 4-phenyl-1H-1,2,3-triazoles can also give the same product even in the absence of a base at high temperature.
 
X. Zhang, S. J. Desrochers, A. D. Carl, N. Geagea, K. Zielinski and M. H. Emmert
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00069J, Research Article
Through concurrent halide and acid catalysis, olefin-forming dehydrations and non-rearranging Friedel–Crafts alkylations under mild conditions are established.
 
Run-Ze Mao, De-Cai Xiong, Fan Guo, Qin Li, Jinyou Duan and Xin-Shan Ye
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00021E, Research Article
A novel and efficient light-driven glycosylation strategy was developed with wide substrate scope/generality.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00084C, Research Article
A rhodium catalyzed regioselective coupling of thiirane with 1-sulfonyl-1,2,3-triazole has been realized to give a formal [3 + 3] cycloaddition product 3,4-dihydro-2H-1,4-thiazine via the 1,3-insertion model of azavinyl carbene.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00077K, Highlight
As an important emerging area of 8-aminoquinoline assisted C–H activation, the construction of heterocycles via direct C–H activation and domino reactions involving domino C–H activation/annulation has been highlighted.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00063K, Research Article
Cu0/Fe3O4 catalyzed stereoselective synthesis of E-vinyl sulfones from tosylmethyl isocyanide and alkynes. TosMIC act as sulfonyl source.
 
Yaxi Dong, Suyan Sun, Fan Yang, Yu Zhu, Weiguo Zhu, Huijie Qiao, Yusheng Wu and Yangjie Wu
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00075D, Research Article
A facile protocol for aminocarbonylation of alkynes with amines at room temperature was developed using a metal carbonyl source.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00034G, Research Article
Development of two novel oxa-[3 + 2] cycloaddition reactions of Achmatowicz products with 1,3-dicarbonyl compounds for rapid and highly efficient assembly of polycyclic furopyranones is described. Plausible mechanisms were proposed.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00038J, Research Article
The first catalytic enantioselective vinylogous Mannich reaction of α,α-dicyanoolefins with ketimines derived from isatins has been developed. High yields and enantioselectivities were observed for the reaction of various ketimines and α,α-dicyanoolefins using a tertiary butyl substituted cinchona alkaloid type squaramide catalyst.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00091F, Research Article
The core of benzo[f][1,2]thiazonin-5(4H)-one 3,3-dioxide is efficiently assembled through a palladium-catalyzed tandem reaction of 2-alkynylbenzenesulfonamides with 2-(2-bromobenzylidene)cyclobutanones via double carbometallation. A range of polycycles with a nine-membered sultam ring are generated in moderate to good yields.
 
Runyu Mao, Danqing Zheng, Hongguang Xia and Jie Wu
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00070C, Research Article
The scaffold of benzo[b]thiophene 1,1-dioxides can be easily constructed through a copper(I)-catalyzed insertion of sulfur dioxide into (2-alkynylaryl)boronic acids. The reaction proceeds via insertion of sulfur dioxide and subsequent intramolecular 5-endo cyclization.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00022C, Research Article
An anti-stereoselective vinylogous Mannich reaction between 2-TBSO-pyrrole and N-tert-butanesulfinyl imines and its application to the efficient synthesis of (+)-absouline were reported.
 
Xuefeng Cong, Shengxian Zhai and Xiaoming Zeng
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00011H, Research Article
From themed collection 2015 Emerging Investigators by OCF
A mild C–H allylation promoted by a cobalt salt combined with a Grignard reagent is described.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00059B, Research Article
A new method of cobalt-catalyzed annulation of anilides and internal alkynes for the efficient synthesis of quinoline scaffolds was developed.
 
Jeremy K. Klosterman, Janis Veliks, Derik K. Frantz, Yoshizumi Yasui, Michael Loepfe, Eli Zysman-Colman, Anthony Linden and Jay S. Siegel
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00024J, Research Article
A kinetically directed, stepwise approach towards molecular Borromean links enabled the isolation and structural characterization of synthetic intermediates along the way.
 
Org. Chem. Front., 2016, Advance Article
DOI: 10.1039/C6QO00074F, Research Article
Chiral iminophosphoranes organocatalyzed the enantioselective synthesis of 3-hydroxymethyl-2-oxindoles in 81–98% yields and up to 94% ee under mild conditions. Of note is that readily available and easily usable paraformaldehyde was employed as a hydroxymethylation C1 unit in the reaction.
 

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