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8.188 Aktuelle Fachpublikationen zum Thema Palladium

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Palladium catalyzed stereocontrolled synthesis of C-aryl glycosides using glycals and arenediazonium salts at room temperature

03.07.2018 | Jeyakumar Kandasamy; Adesh Kumar Singh, Organic & Biomolecular Chemistry, 2018

A stereocontrolled synthesis of aryl-C-glycosides was achieved using glycals and aryldiazonium salts in the presence of palladium acetate. A wide range of glycals including D-glucal, D-galactal, L-rhamanal, D-xylal and D-ribal underwent C-arylation at the anomeric carbon in the presence of ...

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Palladium-catalyzed selective synthesis of 3,4-dihydroquinazolines from electron-rich arylamines, electron-poor arylamines and glyoxalates

03.07.2018 | Chao Wu; Jie Wang; Xing-Yu Zhang; Guo-Kai Jia; Zhong Cao; Zilong Tang; Xianyong Yu; Xinhua Xu; Wei-Min He, Organic & Biomolecular Chemistry, 2018

A simple palladium-catalyzed selective synthesis of structurally diverse 3,4-dihydroquinazolines from electron-rich arylamines, electron-poor arylamines and glyoxalates has been developed under mild conditions. This reaction is carried out in a tandem manner constituted by the condensation of ...

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Pd-Catalyzed diastereoselective [3 + 2] cycloaddition of vinylcyclopropanes with sulfamate-derived cyclic imines

27.06.2018 | Qijun Wang; Chang Wang; Wangyu Shi; Yumei Xiao; Hongchao Guo, Organic & Biomolecular Chemistry, 2018

The palladium-catalyzed diastereoselective [3 + 2] cycloaddition reaction of vinylcyclopropanes with sulfamate-derived cyclic imines worked efficiently under mild reaction conditions, providing 2,3-dihydrobenzo[e]pyrrolo[1,2-c][1,2,3]oxathiazine 5,5-dioxide derivatives in good to excellent yields.

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A novel 6-quinoxalinamine-based fluorescent probe for real-time detection of palladium (II) ion in pure water and bio-imaging

26.06.2018 | Chuanliang Che; Xiangzhu Chen; Hongmei Wang; Jia-Qi Li; Yumei Xiao; Bin Fu; Zhaohai Qin, New Journal of Chemistry, 2018

A novel quinoxalinamine-containing fluorescent probe (LK) was designed and synthesized based on coordination for real-time detection of Pd2+. LK was easily obtained in high yield by the Suzuki cross-coupling reaction. The quinoxaline group provides the sensor LK with good water-solubility which ...

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Palladium Catalyzed Chloroethoxylation of Aromatic and Heteroaromatic Chlorides: an Orthogonal Functionalization of Chloroethoxy Linker

20.06.2018 | Bálint Pethő; Dóra Vangel; János Tivadar Csenki; Márton Zwillinger; Zoltán Novák, Organic & Biomolecular Chemistry, 2018

A novel disconnection based on cross-coupling chemistry was designed to access pharmaceutically relevant aryl-aminoethyl ethers. The developed palladium-catalyzed functionalization of aryl- and heteroaryl chlorides with sodium tetrakis-(2-chloroethoxy)-borate salt is orthogonal to the simple ...

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Sensors, Vol. 18, Pages 1953: Polystyrene Oxygen Optodes Doped with Ir(III) and Pd(II) meso-Tetrakis(pentafluorophenyl)porphyrin Using an LED-Based High-Sensitivity Phosphorimeter

15.06.2018 | Filho, Alexandre F. De Moraes; Gewehr, Pedro M.; Maia, Joaquim M.; Jakubiak, Douglas R., Sensors, 2018

Sensors, Vol. 18, Pages 1953: Polystyrene Oxygen Optodes Doped with Ir(III) and Pd(II) meso-Tetrakis(pentafluorophenyl)porphyrin Using an LED-Based High-Sensitivity Phosphorimeter Sensors doi: 10.3390/s18061953 Authors: Alexandre Filho Pedro Gewehr Joaquim Maia Douglas ...

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Palladium/H+-cocatalyzed kinetic resolution of tertiary propargylic alcohols

12.06.2018 | Wanli Zhang; Shengming Ma, Chemical Communication, 2018

A new approach to not-readily-available optically active tertiary propargylic alcohols through palladium/H+-cocatalyzed carboxylation of racemic tertiary propargylic alcohols with CO and MeOH has been described. Both enantiomers can be obtained with no less than 90% ee utilizing (R) or ...

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A borrowing hydrogen methodology: palladium-catalyzed dehydrative N-benzylation of 2-aminopyridines in water

12.06.2018 | Hidemasa Hikawa; Hirokazu Imamura; Shoko Kikkawa; Isao Azumaya, Green Chemistry, 2018

We demonstrate a greener borrowing hydrogen methodology using the π-benzylpalladium system, which offers an efficient and environmentally friendly dehydrative N-monobenzylation of 2-aminopyridines with non-activated benzylic alcohols in the absence of base. The crossover experiment using ...

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Pd(II)-Catalyzed gamma-C(sp3)-H Alkynylation of Amides: A selective functionalization of R chain of amides R1C(O)NHR

12.06.2018 | Vinod Gokulkrishna Landge; Ayisha Parveen; Avanashiappan Nandakumar; Balaraman Ekambaram, Chemical Communication, 2018

The accomplishment of gamma C(sp3)–H bond alkynylation of R chain of amides R1C(O)NHR, a fundamental class of synthetic substrates, has not been developed to date. Here, the first example of palladium(II)-catalyzed alkynylation of unactivated gamma C(sp3)-H bond of alkyl amides (cyclic, linear, ...

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Highly active electrocatalyst of 3D Pd/reduced graphene oxide nanostructure for electro-oxidation of methanol and ethanol

10.06.2018 | Author(s): Qingfan Zhang, Xiaofeng Wu, Mingyan Gao, Haifang Qiu, Jing Hu, Keke Huang, Shouhua Feng, Yi ..., Inorganic Chemistry Communications, 2018

Publication date: August 2018 Source:Inorganic Chemistry Communications, Volume 94 Author(s): Qingfan Zhang, Xiaofeng Wu, Mingyan Gao, Haifang Qiu, Jing Hu, Keke Huang, Shouhua Feng, Ying Yang, Tingting Wang, Bo Zhao, Zhelin Liu Herein, we report a green and facile ...

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