Cationic Iridium/Chiral Bidentate Phosphoramidite Catalyzed Asymmetric Hydroarylation

Synthesis ◽  
2021 ◽  
Author(s):  
Tomohiko Shirai ◽  
Yasunori Yamamoto
Keyword(s):  
Catalyst System ◽  
Personal Account ◽  
Unsaturated Compounds ◽  
Direct Addition

In this personal account, we summarize our investigations on the asymmetric direct addition of C(sp2)-H bond to unsaturated compounds such as C=O, C=C using cationic Iridium-chiral O-linked bidentatephosphoramidite (Me-BIPAM) and S-linked bidentatephosphoramidite (S-Me-BIPAM) catalyst system.

scholarly journals Homogeneous hydrogenations ofα, β-unsaturated compounds using pentacyanocobaltate (II) anion as catalyst system

1977 ◽  
Vol 86 (5) ◽  
pp. 435-442 ◽  
Author(s):  
G S R Subba Rao ◽  
J Rajaram ◽  
S Rathnamala ◽  
R Sivaramakrishnan
Keyword(s):  
Catalyst System ◽  
Unsaturated Compounds

Notizen: Hydrierung von ungesättigten Verbindungen, Aldehyden und Ketonen mit dem Katalysatorsystem NiCl2 · 6 H2O + NaBH4 in Dimethylformamid unter milden Bedingungen.

1976 ◽  
Vol 31 (8) ◽  
pp. 1149-1150 ◽  
Author(s):  
Walter Strohmeier ◽  
Hannelore Steigerwald
Keyword(s):  
Double Bond ◽  
Catalyst System ◽  
Unsaturated Ketones ◽  
Mild Conditions ◽  
Unsaturated Compounds

With a catalyst-system, prepared by reaction of NiCl2 · 6 H2O and NaBH4 in dimethylformamide a number of unsaturated compounds are hydrogenated under mild conditions quite efficiently. At 25°C hydrogenation of unsaturated ketones like mesityloxide is selectively regarding the double bond. Aldehydes are hydrogenated at 25 °C and some ketones at 60°C very slowly.

Personal Account of Eating Disorders and Its Effects on College Students and the Community

2013 ◽  
Author(s):  
Lindsay A. Yates ◽  
Nichole A. Mueller ◽  
Jill V. Spadafora ◽  
Kathleen S. Tillman
Keyword(s):  
College Students ◽  
Eating Disorders ◽  
Personal Account

Jazz, dementia, and moments of meeting

2020 ◽  
Vol 10 (1) ◽  
pp. 87-92
Author(s):  
Kate White
Keyword(s):  
Personal Account ◽  
Dementia Diagnosis ◽  
Emotional Connection ◽  
The Gift ◽  
Creative Force ◽  
Family Living

Playful jazz improvisations and singing continue in creating the gift of emotional connection in a family living with Alzheimer’s. Sharing their poignant reflections provides a personal account of the centrality of music in reaching each other at a feeling level throughout the course of their lives. The recognition of music as a powerful and creative force for all of us, particularly when there is a dementia diagnosis, is explored.

Direct Observation of Chain Lengths and Conformations in Oligofluorene Distributions from Controlled Polymerization by Double Electron-Electron Resonance

2019 ◽  
Author(s):  
Dennis Bücker ◽  
Annika Sickinger ◽  
Julian D. Ruiz Perez ◽  
Manuel Oestringer ◽  
Stefan Mecking ◽  
...  
Keyword(s):  
Chain Length ◽  
Length Distribution ◽  
Catalyst System ◽  
Chain Conformation ◽  
Controlled Polymerization ◽  
Chain Length Distribution ◽  
Electron Resonance ◽  
Double Electron ◽  
The Individual ◽  
Double Electron Electron Resonance

Synthetic polymers are mixtures of different length chains, and their chain length and chain conformation is often experimentally characterized by ensemble averages. We demonstrate that Double-Electron-Electron-Resonance (DEER) spectroscopy can reveal the chain length distribution, and chain conformation and flexibility of the individual n-mers in oligo-(9,9-dioctylfluorene) from controlled Suzuki-Miyaura Coupling Polymerization (cSMCP). The required spin-labeled chain ends were introduced efficiently via a TEMPO-substituted initiator and chain terminating agent, respectively, with an in situ catalyst system. Individual precise chain length oligomers as reference materials were obtained by a stepwise approach. Chain length distribution, chain conformation and flexibility can also be accessed within poly(fluorene) nanoparticles.

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