Infrared laser induced decomposition of pentafluoroacetone

1979 ◽  
Vol 57 (23) ◽  
pp. 3053-3055
Author(s):  
M. Drouin ◽  
P. A. Hackett ◽  
C. Willis ◽  
M. Gauthier
Keyword(s):  
Free Radical ◽  
High Power ◽  
Infrared Radiation ◽  
Infrared Laser ◽  
Radical Mechanism ◽  
Radiation Fields ◽  
Free Radical Mechanism ◽  
Induced Decomposition

The dissociation of pentafluoroacetone by high power infrared radiation fields is shown to proceed by a free radical mechanism.

THE REACTION OF 2-CYANO-2-PROPYL FREE RADICALS WITH OXYGEN: 2-CYANO-2-PROPYL HYDROPEROXIDE

1960 ◽  
Vol 38 (7) ◽  
pp. 1154-1157 ◽  
Author(s):  
M. Talât-Erben ◽  
Nevzat Önol
Keyword(s):  
Free Radicals ◽  
Free Radical ◽  
Hydrogen Cyanide ◽  
Elevated Temperatures ◽  
Radical Mechanism ◽  
Acetone Cyanohydrin ◽  
Experimental Conditions ◽  
Polymerization Catalyst ◽  
Free Radical Mechanism ◽  
Induced Decomposition

The reaction with oxygen of cyanisopropyl free radicals generated by the polymerization catalyst 2,2′-azobisisobutyronitrile has been investigated. In xylene, or benzene, as solvent at 55° the products identified are: (1) a new compound, 2-cyano-2-propyl hydroperoxide; (2) acetone cyanohydrin; (3) hydrogen cyanide; (4) cyanogen; (5) acetone; (6) p-methyl benzaldehyde (in xylene only); and (7) tetramethylsuccinodinitrile. The hydroperoxide is surprisingly stable; its physical constants are: b.p. 37 °C at 1 mm Hg; m.p. −9 to −8°; [Formula: see text] 1.4138; d20 1.013 g/ml. In benzene under the same experimental conditions, only a very small amount of the hydroperoxide is obtained, the principal product being acetone cyanohydrin. A free-radical mechanism is proposed. The induced decomposition of the hydroperoxide, which is important in benzene, is almost completely inhibited in the presence of xylene. The new hydroperoxide can be used as a polymerization catalyst at moderately elevated temperatures.

Comparative QSAR evidence for a free-radical mechanism of phenol-induced toxicity

2000 ◽  
Vol 127 (1) ◽  
pp. 61-72 ◽  
Author(s):  
Corwin Hansch ◽  
Susan C. McKarns ◽  
Carr J. Smith ◽  
David J. Doolittle
Keyword(s):  
Free Radical ◽  
Radical Mechanism ◽  
Free Radical Mechanism

Dirhodium(II)-Catalyzed Diamination Reaction via a Free Radical Pathway

2021 ◽  
Author(s):  
Zhiying Fan ◽  
Zhifan Wang ◽  
Ruoyi Shi ◽  
Yuanhua Wang
Keyword(s):  
Free Radical ◽  
Bond Formation ◽  
Mechanistic Study ◽  
Radical Mechanism ◽  
Free Radical Mechanism

Unlike C-N bond formation with classical dirhodium(II)-nitrenoids as the key intermediate, dirhodium(II)-catalyzed 1,2-and 1,3-diamination reactions are realized by a free radical mechanism. A mechanistic study revealed that the reactions undergo...

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