Rhodium-Catalyzed Denitrogenative gem-Difunctionalization of Pyridotriazoles with Thioesters: Formal Carbene Insertion into C(O)−S Bonds

2022 ◽  
Author(s):  
Zhe Gao ◽  
Di Jiang ◽  
Bin Li ◽  
Baiquan Wang
Keyword(s):  
Carbene Insertion ◽  
Sulfonium Ylides

A formal carbene insertion into C(O)−S bonds to access α-quaternary pyridines was achieved via a rhodium(II)-catalyzed in situ formation of sulfonium ylides from pyridotriazoles and thioesters followed by acyl group...

Ruthenium-Porphyrin-Catalyzed Diastereoselective Intramolecular Alkyl Carbene Insertion into CH Bonds of Alkyl Diazomethanes Generated In Situ fromN-Tosylhydrazones

2014 ◽  
Vol 53 (51) ◽  
pp. 14175-14180 ◽  
Author(s):  
Annapureddy Rajasekar Reddy ◽  
Cong-Ying Zhou ◽  
Zhen Guo ◽  
Jinhu Wei ◽  
Chi-Ming Che
Keyword(s):  
Carbene Insertion ◽  
Ruthenium Porphyrin

Silver(i)-promoted insertion into X–H (X = Si, Sn, and Ge) bonds with N-nosylhydrazones

2017 ◽  
Vol 53 (16) ◽  
pp. 2503-2506 ◽  
Author(s):  
Zhaohong Liu ◽  
Qiangqiang Li ◽  
Yang Yang ◽  
Xihe Bi
Keyword(s):  
Diazo Compounds ◽  
Carbene Insertion

Silver(i)-promoted carbene insertion into X–H (X = Si, Sn, and Ge) bonds has been realized by using unstable diazo compounds, which are generated in situ from N-nosylhydrazones as carbene precursors.

Ruthenium-Porphyrin-Catalyzed Diastereoselective Intramolecular Alkyl Carbene Insertion into CH Bonds of Alkyl Diazomethanes Generated In Situ fromN-Tosylhydrazones

2014 ◽  
Vol 126 (51) ◽  
pp. 14399-14404 ◽  
Author(s):  
Annapureddy Rajasekar Reddy ◽  
Cong-Ying Zhou ◽  
Zhen Guo ◽  
Jinhu Wei ◽  
Chi-Ming Che
Keyword(s):  
Carbene Insertion ◽  
Ruthenium Porphyrin

ChemInform Abstract: Ruthenium-Porphyrin-Catalyzed Diastereoselective Intramolecular Alkyl Carbene Insertion into C-H Bonds of Alkyl Diazomethanes Generated in situ from N-Tosylhydrazones.

ChemInform ◽  
2015 ◽  
Vol 46 (19) ◽  
pp. no-no
Author(s):  
Annapureddy Rajasekar Reddy ◽  
Cong-Ying Zhou ◽  
Zhen Guo ◽  
Jinhu Wei ◽  
Chi-Ming Che
Keyword(s):  
Carbene Insertion ◽  
Ruthenium Porphyrin

Fe-Porphyrin functionalized microporous organic nanotube networks and their application for the catalytic olefination of aldehydes and carbene insertion into N–H bonds

2017 ◽  
Vol 8 (24) ◽  
pp. 3721-3730 ◽  
Author(s):  
Minghong Zhou ◽  
Hui Zhang ◽  
Linfeng Xiong ◽  
Zidong He ◽  
Tianqi Wang ◽  
...  
Keyword(s):  
Crosslinking Reaction ◽  
Carbene Insertion ◽  
Organic Nanotubes

Fe-Porphyrin functionalized microporous organic nanotubes networks were synthesized by an in situ hyper-crosslinking reaction between bottlebrush copolymers and meso-tetraphenylporphyrin iron(iii) chloride.

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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