Studies of Reaction Mechanism Intermediates by ESI-MS

2010 ◽  
pp. 113-131 ◽  
Author(s):  
Rong Qian ◽  
Jing Zhou ◽  
Shengjun Yao ◽  
Haoyang Wang ◽  
Yinlong Guo
Keyword(s):  
Reaction Mechanism ◽  
Esi Ms

Synthesis of 1-Alkyl-3-(2-oxo-2-aryl/alkyl-ethyl)indolin-2-ones through Gold/Brønsted Acid Relay Actions: Observation of Selective C=C Bond Cleavage of Enaminones

Synthesis ◽  
2017 ◽  
Vol 49 (16) ◽  
pp. 3609-3618 ◽  
Author(s):  
Yanzhong Li ◽  
Yulei Zhao ◽  
Yang Yuan ◽  
Lingkai Kong ◽  
Fangfang Zhang
Keyword(s):  
Reaction Mechanism ◽  
Bond Cleavage ◽  
Bronsted Acid ◽  
Brønsted Acid ◽  
Reaction Conditions ◽  
One Pot ◽  
Esi Ms ◽  
Ms Analysis ◽  
Brönsted Acid

A novel gold(I)/Brønsted acid sequential catalyzed/promoted procedure to synthesize 1-alkyl-3-(2-oxo-2-aryl/alkyl-ethyl)indolin-2-ones under mild reaction conditions is developed. This methodology is realized by relay actions of gold and a Brønsted acid in a one-pot multistep manner. The gold(I)-catalyzed chemoselective C(sp2)-H functionalization of enaminones and Brønsted acid promoted cleavage of the C=C bond are integrated effectively. Based on the results of control experiments and ESI-MS analysis, a possible reaction mechanism is proposed.

Towards a designed synthesis of metallic nanoparticles in polyols – elucidation of the redox scheme in a cobalt–ethylene glycol system

2016 ◽  
Vol 40 (10) ◽  
pp. 8632-8642 ◽  
Author(s):  
Kazuma Takahashi ◽  
Shun Yokoyama ◽  
Takatoshi Matsumoto ◽  
Jhon L. Cuya Huaman ◽  
Hisashi Kaneko ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Ethylene Glycol ◽  
Redox Reaction ◽  
Metallic Nanoparticles ◽  
Metal Particles ◽  
Esi Ms ◽  
System P ◽  
Ft Ir ◽  
Analytical Tools ◽  
Designed Synthesis

A new redox reaction mechanism in the formation of Co metal particles using an ethylene glycol–cobalt system is proposed using NMR, ESI-MS, FT-IR and XRD as analytical tools.

Investigation of Reaction Mechanism of Amino Acids and Phosphorus Trichloride by 31 P NMR and ESI-MS/MS

2011 ◽  
Vol 29 (6) ◽  
pp. 1173-1179 ◽  
Author(s):  
Yanchun Cao ◽  
Shuxia Cao ◽  
Yali Xie ◽  
Xiangkun Zong ◽  
Yufen Zhao
Keyword(s):  
Amino Acids ◽  
Reaction Mechanism ◽  
Phosphorus Trichloride ◽  
Esi Ms

Arylation of enelactams using TIPSOTf: reaction scope and mechanistic insight

2021 ◽  
Author(s):  
Tomasz J. Idzik ◽  
Zofia M. Myk ◽  
Łukasz Struk ◽  
Magdalena Perużyńska ◽  
Gabriela Maciejewska ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Multinuclear Nmr ◽  
Mechanistic Insight ◽  
Nmr Study ◽  
Wide Range

Triisopropylsilyltrifluoromethanesulfonate can be effectively used for the arylation of a wide range of enelactams. The multinuclear NMR study provided deep insights into the reaction mechanism.

HPLC-DAD/ESI-MS identification and quantification of polar constituents in six Stachys taxa from Balkan peninsula

Planta Medica ◽  
2011 ◽  
Vol 77 (12) ◽  
Author(s):  
A Karioti ◽  
J Kukic Markovic ◽  
S Petrovic ◽  
M Niketic ◽  
A Bilia
Keyword(s):  
Balkan Peninsula ◽  
Esi Ms ◽  
Identification And Quantification
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