Zobrazeno 1 - 10
of 757
pro vyhledávání: '"Helfried Neumann"'
Autor:
Rui Sang, Yuya Hu, Rauf Razzaq, Guillaume Mollaert, Hanan Atia, Ursula Bentrup, Muhammad Sharif, Helfried Neumann, Henrik Junge, Ralf Jackstell, Bert U. W. Maes, Matthias Beller
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Using CO2 as C1-feedstock for the chemical industry has attracted great attention. Here the authors develop a two-step cascade process to perform catalytic carbonylations of olefins, alkynes, and aryl halides using CO2 and H2.
Externí odkaz:
https://doaj.org/article/15f77b70d82d411a92cb5cf680b35713
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-9 (2022)
Exploring benign and green methodologies for the synthesis of functionalized nitriles continues to attract the interest of academic and industrial chemists. Here, the authors efficiently synthesize various aryl, heterocyclic, allylic, and aliphatic n
Externí odkaz:
https://doaj.org/article/19d79eecb9aa47fc844ae1c11aabc837
Publikováno v:
JACS Au, Vol 2, Iss 3, Pp 731-744 (2022)
Externí odkaz:
https://doaj.org/article/ce4d9a015d674a348c5c42a1a5b395c9
Autor:
Matthias Keller, Florian Fischer, Andreas Locher, Helfried Neumann, Christoph Taeschler, Fei Ye, Shaoke Zhang
Publikováno v:
CHIMIA, Vol 75, Iss 11, Pp 923-935 (2021)
Fluoroalkylations have received increasing attention in the academic and industrial environment due to the particular properties of the active ingredients that are strongly influenced by fluoroalkyl substituents. The inherent difficulties of introduc
Externí odkaz:
https://doaj.org/article/e3ed9331d4594928b4007820c51cbb82
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Synthesis of fluorinated organic molecules is of high interest for agrochemistry and pharmaceutics, but efficient and general reagents for introducing -CF2- groups are lacking. Here, the authors report the synthesis of 3,3-difluoropropen-1-yl ammoniu
Externí odkaz:
https://doaj.org/article/92708a3260d249239f5a4d4e1d32b26a
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
Synthetic methods aiming at minimizing reaction steps while increasing molecular complexity are highly sought after by organic chemists. Here, the authors report two cascade procedures combining nucleophilic substitution, palladium-catalyzed Heck and
Externí odkaz:
https://doaj.org/article/2c0574cb34a84c768abaae0652b941f7
Autor:
Kathiravan Murugesan, Zhihong Wei, Vishwas G. Chandrashekhar, Helfried Neumann, Anke Spannenberg, Haijun Jiao, Matthias Beller, Rajenahally V. Jagadeesh
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-9 (2019)
Despite their higher abundance, 3d metal-based catalysts are less investigated than their precious metal counterparts. Here, the authors report a cobalt-triphos complex as molecularly-defined non-noble metal catalyst for the reductive amination of ca
Externí odkaz:
https://doaj.org/article/5ab10d284af5402ab16da0d410af6a0e
Publikováno v:
ACS Catalysis. 13:6744-6753
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3daedd768aa4ceb1b5d34475aebb3289
https://doi.org/10.1021/acscatal.3c00771
https://doi.org/10.1021/acscatal.3c00771
Publikováno v:
Industrial Chemistry & Materials. 1:155-174
In this review, the use of 1,3-butadiene as a comparably cheap and abundant raw material to harvest fine and bulk chemicals is summarized in detail.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c5f55ff14714df0fcdabe13681c6941
https://doi.org/10.1039/d3im00009e
https://doi.org/10.1039/d3im00009e
Autor:
Yaxin Wang, Zehui Cao, Qin He, Xin Huang, Jiaxi Liu, Helfried Neumann, Gong Chen, Matthias Beller
Publikováno v:
Chemical Science. 14:1732-1741
A simple activation of perfluoroalkyl iodides by tBuONa or KOH allows the promotion of α-sp3 C–H amidation reactions of alkyl ethers and benzylic hydrocarbons, C–H iodination of heteroaryl compounds, and perfluoroalkylations of electron-rich π
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da70e101bf6a407fbe70334e69fe1d70
https://doi.org/10.1039/d2sc06145g
https://doi.org/10.1039/d2sc06145g