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2,945 Newest Publications in advanced synthesis & catalysis

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Direct Synthesis of Primary Anilines via Nickel‐mediated C(sp2)‐H Aminations

17-Jan-2018 | Lin Yu, Xiang Cheng, Da Liu, Liang Hu, Yongqi Yu, Hang Huang, Ze Tan, Qingwen Gui, Advanced Synthesis & Catalysis, 2018

An efficient and mild protocol for the direct conversion of arene C–H bonds to C–NH2 without the need for extra deprotection step has been established, and to the best of our knowledge, this is the first time that the synthesis of primary anilines via nickel‐mediated C(sp2)‐H ...

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Iridium‐catalyzed Asymmetric Hydrogenation of Polycyclic Heteroaromatics, Pyrrolo/Indolo[1,2‐a]quinoxalines and Phenanthridines

16-Jan-2018 | Shu-Bo Hu, Xiao-Yong Zhai, Hong-Qiang Shen, Yong-Gui Zhou, Advanced Synthesis & Catalysis, 2018

Owing to the reversible dehydrogenative rearomatization of hydrogenation product and poisoning effect of nitrogen atom, asymmetric hydrogenation of polycyclic nitrogen‐containing heteroaromatics is still a great challenge. Herein, through in situ protection of hydrogenation products with acetic ...

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One‐pot Synthesis of Alkynylated Coumarins via Rhodium‐Catalyzed Annulation of Aryl Thiocarbamates with 1,3‐Diynes or Terminal Alkynes

16-Jan-2018 | Yuan Gao, Fenfen Zeng, Xudong Sun, Minfeng Zeng, Zhen Yang, Xianqiang Huang, Guodong Shen, Yongsheng Tan, Ruokun Fen ..., Advanced Synthesis & Catalysis, 2018

A convenient and selective synthesis of alkynylated coumarins from various aryl thiocarbamates and 1,3‐diynes or terminal alkynes via rhodium‐catalyzed C‐H bond activation has been developed. In this transformation, both symmetrical and asymmetrical 1,3‐diynes could be applicable, obtaining ...

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Palladium‐Catalyzed Regioselective Three‐Component Cascade Bisthiolation of Terminal Alkynes

16-Jan-2018 | Huanfeng Jiang, Jianxiao Li, Can Li, Lu Ouyang, Chunsheng Li, Shaorong Yang, Wanqing Wu, Advanced Synthesis & Catalysis, 2018

An efficient and novel NHC(N‐heterocyclic carbene)‐palladium‐catalyzed three‐component cascade bisthiolation of terminal alkynes, K2S (potassium sulfide) and diaryliodonium salts for the assembly of functionalized (Z)‐1,2‐bis(arylthio)alkene derivatives has been accomplished for the first time. ...

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Direct Synthesis of Sulfinamides by the Copper‐Catalyzed Electrophilic Amidation of Sulfenate Anions

15-Jan-2018 | Junliang Zhang, Qiang Dai, Advanced Synthesis & Catalysis, 2018

A method for the construction of sulfinamides via the copper‐catalyzed electrophilic amination of sulfenate anions using N‐benzoyloxyamines as the amination reagents. This procedure featured with the capture of in‐situ generated sulfenate anions from β‐sulfinyl esters under mild conditions, ...

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Inexpensive Ruthenium NNS‐Complexes as efficient ester hydrogenation catalyst with high C=O vs. C=C selectivities

13-Jan-2018 | Bernhard Stadler, Pim Puylaert, Justus Diekamp, Richard van Heck, Yuting Fan, Anke Spannenberg, Sandra Hinze, Johann ..., Advanced Synthesis & Catalysis, 2018

Ru(NNS)(PPh3)Cl2 (NNS = 2‐(methylthio)‐N‐(pyridin‐2‐yl‐methyl)ethan‐1‐amine) was employed in the hydrogenation of α,β‐unsaturated esters, reaching selectivities for the allylic alcohol up to 95% in the hydrogenation of iso‐butyl¬cinnamate. In addition, several ester substrates were hydrogenated ...

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Photoinduced N‐methylation and N‐sulfonylation of azobenzenes with DMSO under mild reaction conditions

13-Jan-2018 | Ning Xu, Yan Zhang, Wei Chen, Pinhua Li, Lei Wang, Advanced Synthesis & Catalysis, 2018

A photoinduced N‐methylation and N‐sulfonylation of azobenzenes with dimethyl sulfoxide (DMSO) was developed in the absence of an external photosensitizer under mild conditions. The reactions underwent smoothly to generate the corresponding products in high yields through a radical addition ...

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Photoinduced N‐methylation and N‐sulfonylation of azobenzenes with DMSO under mild reaction conditions

13-Jan-2018 | Ning Xu, Yan Zhang, Wei Chen, Pinhua Li, Lei Wang, Advanced Synthesis & Catalysis, 2018

A photoinduced N‐methylation and N‐sulfonylation of azobenzenes with dimethyl sulfoxide (DMSO) was developed in the absence of an external photosensitizer under mild conditions. The reactions underwent smoothly to generate the corresponding products in high yields through a radical addition ...

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An efficient and practical method for the enantioselective synthesis of tertiary trifluoromethyl carbinols.

12-Jan-2018 | Lorenzo G. Borrego, Rocío Recio, Manuel Alcarranza, Inmaculada Fernández, Noureddine Khiar, Advanced Synthesis & Catalysis, 2018

An efficient sulfinamide/olefin based chiral ligand, MetSulfolefin, has been developed for the enantioselective rhodium‐catalysed addition of aryl‐boronic acids to trifluoromethyl ketones. This shelf stable ligand is insensitive to air, oxygen and moisture, and it is obtained in only two high ...

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Chelation‐promoted efficient C−H/N−H cross dehydrogenative coupling between picolinamides and simple ethers under copper catalysis

11-Jan-2018 | Qiang Yue, Zhen Xiao, Zhengkun Kuang, Zhengding Su, Qian Zhang, Dong Li, Advanced Synthesis & Catalysis, 2018

A highly efficient copper‐catalyzed C−H/N−H cross dehydrogenative coupling between picolinamides and simple ethers was developed. The reaction was promoted by the chelation assistance of removable picolinyl group and exhibited excellent TON and TOF number. This method was applicable to both ...

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