Entity

Time filter

Source Type


Shi G.,Tongji University | Zhang Y.,Tongji University | Zhang Y.,Key Laboratory of Yangtze River Water Environment
Advanced Synthesis and Catalysis | Year: 2014

As a widely existing functional group in organic molecules, the carboxyl group has numerous advantageous characteristics such as great convenience for further transformation, relatively low toxicity and cost, and weak coordination to transition metal catalysts, which render it an attractive directing group in transition metal-catalyzed C-H bond functionalization reactions. This review surveys transition metal-catalyzed C-H bond functionalization reactions directed by carboxylates, including carbon-carbon, carbon-oxygen, and other carbon-heteroatom bond formation reactions. Reactions directed by the acidic N-arylamides, which are derived from carboxylic acids and have a directing mode similar to that of carboxylates, are also presented here. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Source


Liu W.,Tongji University | Li Y.,Tongji University | Xu B.,Tongji University | Kuang C.,Key Laboratory of Yangtze River Water Environment
Organic Letters | Year: 2013

Two highly efficient protocols for the regioselective synthesis of 2-substituted 4-alkenyl- and 4-aryl-1,2,3-triazoles by the palladium-catalyzed C-H functionalization of 1,2,3-triazole N-oxides are reported. A possible pathway of direct alkenylation with 1-octene and vinyl acetate is discussed. © 2013 American Chemical Society. Source


Wang Q.,Tongji University | Wang X.,Tongji University | Wang X.,Key Laboratory of Yangtze River Water Environment
Journal of Physical Chemistry A | Year: 2013

Laser-ablated beryllium atom has been codeposited at 4 K with hydrogen sulfide in excess noble gas matrices. Four noble-gas compounds NgBeS (Ng = Ne, Ar, Kr, Xe) and the BeS2 molecule are identified on the basis of the S-34 isotopic substitution, DFT and CCSD(T) theoretical predictions, and a comparison of noble-gas substitution. The agreement between the experimental and calculated vibrational frequencies supports the identification of these molecules. The dissociation energies are calculated at 1.6, 12.6, 10.7, and 13.4 kcal/mol for NeBeS, ArBeS, KrBeS, and XeBeS, respectively, at the CCSD(T) level. The BeS Lewis acid molecule favors strong chemical binding between the Be and Ng atoms. © 2013 American Chemical Society. Source


Liu W.,Tongji University | Li Y.,Tongji University | Wang Y.,Tongji University | Kuang C.,Tongji University | Kuang C.,Key Laboratory of Yangtze River Water Environment
Organic Letters | Year: 2013

A highly efficient protocol for C-H/C-H cross-coupling has been found to occur between 2-aryl-1,2,3-triazole N-oxides and pyridine N-oxide derivatives. In addition, two homocoupling reactions of 2-substituted 1,2,3-triazole N-oxides and some pyridine N-oxide derivatives were developed. A possible pathway of C-H/C-H direct coupling is discussed. © 2013 American Chemical Society. Source


Tian Q.,Tongji University | He P.,Tongji University | Kuang C.,Tongji University | Kuang C.,Key Laboratory of Yangtze River Water Environment
Organic and Biomolecular Chemistry | Year: 2014

A copper-catalyzed arylsulfonylation of N-arylsulfonyl-acrylamides with sulfonylhydrazides through a tandem radical process was developed. This methodology provided an alternative strategy for the synthesis of sulfonated oxindoles by forming C-S, C-N and C-C bonds in a single operation. © the Partner Organisations 2014. Source

Discover hidden collaborations