Metal‐Free Synthesis of 3,4‐Dihydroquinolin‐2(1 H )‐Ones via Cascade Oxidative Decarbonylative Radical Alkylation/Cyclization of Cinnamamides with Aliphatic Aldehydes

2019 ◽  
Vol 8 (10) ◽  
pp. 1903-1906
Author(s):  
Xuemei Xu ◽  
Zaigang Luo ◽  
Chen‐Fu Liu ◽  
Xiuxiu Wang ◽  
Liangdan Deng ◽  
...  
Keyword(s):  
Aliphatic Aldehydes ◽  
Metal Free

1,2-Arylalkylation of N-(arylsulfonyl)acrylamides using aliphatic aldehydes as the alkyl source

2017 ◽  
Vol 15 (26) ◽  
pp. 5476-5479 ◽  
Author(s):  
Jin-Tao Yu ◽  
Rongzhen Chen ◽  
Jiawei Zhu ◽  
Jiang Cheng
Keyword(s):  
Alkyl Radical ◽  
Aliphatic Aldehydes ◽  
Metal Free

A metal-free decarbonylative arylalkylation of N-(arylsulfonyl)acrylamides using aliphatic aldehydes as the alkyl radical source was developed.

Metal-free cascade oxidative decarbonylative alkylarylation of acrylamides with aliphatic aldehydes: a convenient approach to oxindoles via dual C(sp2)–H bond functionalization

2016 ◽  
Vol 18 (10) ◽  
pp. 2941-2945 ◽  
Author(s):  
Luo Yang ◽  
Wen Lu ◽  
Wang Zhou ◽  
Feng Zhang
Keyword(s):  
Aliphatic Aldehydes ◽  
Bond Functionalization ◽  
Metal Free ◽  
Convenient Approach

A convenient metal-free cascade oxidative decarbonylative alkylarylation of acrylamides with aliphatic aldehydes to provide quaternary oxindoles is developed.

Metal-free oxidative decarbonylative alkylation of chromones using aliphatic aldehydes

2018 ◽  
Vol 16 (19) ◽  
pp. 3568-3571 ◽  
Author(s):  
Rongzhen Chen ◽  
Jin-Tao Yu ◽  
Jiang Cheng
Keyword(s):  
Conjugate Addition ◽  
Aliphatic Aldehydes ◽  
Metal Free ◽  
Alkylating Reagents

A decarbonylative alkylation of chromones via radical conjugate addition under metal-free conditions was developed using aliphatic aldehydes as alkylating reagents.

Metal-free reductive coupling of aliphatic aldehydes/ketones with 4-cyanopyridines: expanded scope and mechanistic studies

2020 ◽  
Vol 7 (18) ◽  
pp. 2744-2751
Author(s):  
Liuzhou Gao ◽  
Guoqiang Wang ◽  
Hui Chen ◽  
Jia Cao ◽  
Xiaoshi Su ◽  
...  
Keyword(s):  
Reductive Coupling ◽  
Mechanistic Studies ◽  
Aliphatic Aldehydes ◽  
Metal Free ◽  
Wide Range ◽  
Convenient Route

A practical B2pin2 mediated reductive coupling of 4-cyanopyridine with aliphatic aldehydes/ketones has been established. This metal-free protocol provides a convenient route to construct a wide range of C4-pyridine-functionalized alcohols.

Metal-free decarbonylative alkylation–aminoxidation of styrene derivatives with aliphatic aldehydes and N-hydroxyphthalimide

2017 ◽  
Vol 15 (6) ◽  
pp. 1338-1342 ◽  
Author(s):  
Yu-Xia Li ◽  
Qi-Qiang Wang ◽  
Luo Yang
Keyword(s):  
Aliphatic Aldehydes ◽  
Metal Free ◽  
Styrene Derivatives ◽  
First Time

A convenient metal-free decarbonylative alkylation–aminoxidation of styrene derivatives with aliphatic aldehydes and N-hydroxyphthalimide (NHPI) to yield phthalimide protected alkoxyamines was developed for the first time.

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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