Flash vacuum pyrolysis of acetylenic esters: A mechanistic study

2020 ◽  
Vol 146 ◽  
pp. 104778 ◽  
Author(s):  
Nouria A. Al-Awadi ◽  
Asaad S. Mohamed ◽  
Osama M. Habib ◽  
Fatma H. Al-Awadhi ◽  
Nader A. Al-Jalal ◽  
...  
Keyword(s):  
Mechanistic Study ◽  
Acetylenic Esters ◽  
Flash Vacuum Pyrolysis ◽  
Vacuum Pyrolysis

Gas-phase synthesis of 3-carboethoxy-quinolin-4-ones. A comprehensive computational mechanistic study to uncover the dark side of the Gould–Jacobs reaction

RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 83973-83981 ◽  
Author(s):  
Ivana Malvacio ◽  
E. Laura Moyano ◽  
D. Mariano A. Vera
Keyword(s):  
Gas Phase ◽  
Dark Side ◽  
Mechanistic Study ◽  
Coupled Clusters ◽  
Phase Synthesis ◽  
Flash Vacuum Pyrolysis ◽  
Gas Phase Synthesis ◽  
Vacuum Pyrolysis

A set of 3-carboethoxy-quinolin-4-ones were synthesized from diethyl 2-((arylamino)methylene) malonates through a Gould–Jacobs cyclization using flash vacuum pyrolysis (FVP). A detailed mechanistic study was done using DFT and Coupled Clusters models.

Flash vacuum pyrolysis of acetylenic amides: A mechanistic study

2020 ◽  
Vol 150 ◽  
pp. 104894
Author(s):  
Nouria A. Al-Awadi ◽  
Asaad S. Mohamed ◽  
Osama M. Habib ◽  
Fatma H. Al-Awadhi ◽  
Nader A. Al-Jalal ◽  
...  
Keyword(s):  
Mechanistic Study ◽  
Flash Vacuum Pyrolysis ◽  
Vacuum Pyrolysis

Sulfonyl isocyanides RSO2NC

2017 ◽  
Author(s):  
Curt Wentrup ◽  
Horst Briehl
Keyword(s):  
Ir Spectrum ◽  
Reaction Conditions ◽  
Flash Vacuum Pyrolysis ◽  
Vacuum Pyrolysis

Flash vacuum pyrolysis (FVP) of 5-azido-1-aryltetrazoles results in triple N<sub>2</sub> elimination and formation of aryl isocyanides RNC, which rearrange in part to aroylnitriles RCN under the reaction conditions. Similar FVP of 5-azido-1-arenesulfonyltetrazoles generates a compound absorbing in the IR spectrum (77 K) at 2090 cm<sup>-1 </sup>and assigned the structure of arenesulfonyl isocyanide, ArSO<sub>2</sub>NC <b>11</b>. FVP at temperatures above 600 <sup>o</sup>C results in progressively more nitrile ArSO<sub>2</sub>CN <b>12</b>. Compound <b>11</b> also disappears on warming above -80 <sup>o</sup>C

Sulfonyl isocyanides RSO2NC

2017 ◽  
Author(s):  
Curt Wentrup ◽  
Horst Briehl
Keyword(s):  
Ir Spectrum ◽  
Reaction Conditions ◽  
Flash Vacuum Pyrolysis ◽  
Vacuum Pyrolysis

Flash vacuum pyrolysis (FVP) of 5-azido-1-aryltetrazoles results in triple N<sub>2</sub> elimination and formation of aryl isocyanides RNC, which rearrange in part to aroylnitriles RCN under the reaction conditions. Similar FVP of 5-azido-1-arenesulfonyltetrazoles generates a compound absorbing in the IR spectrum (77 K) at 2090 cm<sup>-1 </sup>and assigned the structure of arenesulfonyl isocyanide, ArSO<sub>2</sub>NC <b>11</b>. FVP at temperatures above 600 <sup>o</sup>C results in progressively more nitrile ArSO<sub>2</sub>CN <b>12</b>. Compound <b>11</b> also disappears on warming above -80 <sup>o</sup>C

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