A computational experiment to study hydrogenations of various unsaturated compounds catalyzed by a rationally designed metal-free catalyst

2012 ◽  
Vol 41 (15) ◽  
pp. 4674 ◽  
Author(s):  
Lili Zhao ◽  
Gang Lu ◽  
Fang Huang ◽  
Zhi-Xiang Wang
Keyword(s):  
Computational Experiment ◽  
Metal Free ◽  
Unsaturated Compounds

Metal-free carbocatalyst for catalytic hydrogenation of N-containing unsaturated compounds

2019 ◽  
Vol 377 ◽  
pp. 199-208 ◽  
Author(s):  
Zhaolin He ◽  
Jin Liu ◽  
Qijun Wang ◽  
Meng Zhao ◽  
Zhipan Wen ◽  
...  
Keyword(s):  
Catalytic Hydrogenation ◽  
Metal Free ◽  
Unsaturated Compounds

Metal-Free Catalytic Boration at the β-Position of α,β-Unsaturated Compounds: A Challenging Asymmetric Induction

2010 ◽  
Vol 122 (30) ◽  
pp. 5256-5260 ◽  
Author(s):  
Amadeu Bonet ◽  
Henrik Gulyás ◽  
Elena Fernández
Keyword(s):  
Asymmetric Induction ◽  
Metal Free ◽  
Unsaturated Compounds

Metal-free catalysts for hydrogenation of both small and large imines: a computational experiment

2011 ◽  
Vol 40 (9) ◽  
pp. 1929 ◽  
Author(s):  
Lili Zhao ◽  
Haixia Li ◽  
Gang Lu ◽  
Fang Huang ◽  
Chenggen Zhang ◽  
...  
Keyword(s):  
Computational Experiment ◽  
Metal Free

Catalytic metal-free ketone hydrogenation: a computational experiment

2010 ◽  
Vol 39 (23) ◽  
pp. 5519 ◽  
Author(s):  
Haixia Li ◽  
Lili Zhao ◽  
Gang Lu ◽  
Fang Huang ◽  
Zhi-Xiang Wang
Keyword(s):  
Computational Experiment ◽  
Metal Free ◽  
Ketone Hydrogenation ◽  
Catalytic Metal

Metal-Free Bis-Silylation and Bis-Germylation: C60-Sensitized Reaction of Unsaturated Compounds with Disilirane and Digermirane

ChemInform ◽  
2003 ◽  
Vol 34 (14) ◽  
Author(s):  
Yutaka Maeda ◽  
Takatsugu Wakahara ◽  
Takeshi Akasaka ◽  
Mamoru Fujitsuka ◽  
Osamu Ito ◽  
...  
Keyword(s):  
Metal Free ◽  
Unsaturated Compounds

Persulfate-mediated synthesis of polyfunctionalized benzenes in water via the benzannulation of alkynes and α,β-unsaturated compounds

2019 ◽  
Vol 21 (20) ◽  
pp. 5507-5511
Author(s):  
Gabriela F. P. de Souza ◽  
Airton G. Salles
Keyword(s):  
Metal Free ◽  
Unsaturated Compounds

A persulfate-promoted metal-free route in water toward the synthesis of unprecedented polyfunctionalized benzenes is reported.

The Shadow Widths of Very Small Particles are Formed Independently of the Metal Cap Build Up on the Particle

1981 ◽  
Vol 39 ◽  
pp. 568-569
Author(s):  
George C. Ruben
Keyword(s):  
Gold Particle ◽  
Film Surface ◽  
Small Particles ◽  
Geometric Process ◽  
Metal Free ◽  
Shadow Area

The formation of shadows behind small particles has been thought to be a geometric process (GP) where the metal cap build up on the particle creates a shadow width the same size as or larger than the particle. This GP cannot explain why gold particle shadow widths are generally larger than the gold particle and may have no appreciable metal cap build up (fig. 1). Ruben and Telford have suggested that particle shadow widths are formed by the width dependent deflection of shadow metal (SM) lateral to and infront of the particle. The trajectory of the deflected SM is determined by the incoming shadow angle (45°). Since there can be up to 1.4 times (at 45°) more SM directly striking the particle than the film surface, a ridge of metal nuclei lateral to and infront of the particle can be formed. This ridge in turn can prevent some SM from directly landing in the metal free shadow area. However, the SM that does land in the shadow area (not blocked by the particle or its ridge) does not stick and apparently surface migrates into the SM film behind the particle.

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