The Decomposition of Ethyl Bromide, Alkyl Halides, and Acetal in the Gas Phase at 300°-400°

1932 ◽  
Vol 36 (8) ◽  
pp. 2325-2337 ◽  
Author(s):  
E. T. Lessig
Keyword(s):  
Gas Phase ◽  
Alkyl Halides ◽  
Ethyl Bromide

ChemInform Abstract: Gas-Phase SN2 and E2 Reactions of Alkyl Halides.

ChemInform ◽  
2010 ◽  
Vol 22 (9) ◽  
pp. no-no
Author(s):  
C. H. DEPUY ◽  
S. GRONERT ◽  
A. MULLIN ◽  
V. M. BIERBAUM
Keyword(s):  
Gas Phase ◽  
Alkyl Halides

Gas phase radiation chemistry of ethyl bromide

1976 ◽  
Vol 80 (14) ◽  
pp. 1532-1539 ◽  
Author(s):  
Arthur J. Frank ◽  
Robert J. Hanrahan
Keyword(s):  
Gas Phase ◽  
Radiation Chemistry ◽  
Ethyl Bromide

Synthesis of Double Alkyl EO/PO Random Copolyethers with KOH Catalyst

2012 ◽  
Vol 472-475 ◽  
pp. 2681-2685
Author(s):  
Jian Guo Guo ◽  
Su Qin He ◽  
Jian Ming Jiang
Keyword(s):  
Molecular Weight ◽  
Ethylene Oxide ◽  
Propylene Oxide ◽  
Potassium Hydroxide ◽  
Random Copolymer ◽  
Alkyl Halides ◽  
Ethyl Bromide ◽  
Hydroxyl Group ◽  
Molar Ratio ◽  
End Capping

Ethylene oxide (EO) and propylene oxide (PO) random copolymer was synthesized with 1,2-propanediol as initiator, then the end-capping process was carried out by adding various alkyl halides and potassium hydroxide (KOH) to produce the double alkyl EO/PO random copolyethers. The factors effecting alkyl-capping rate were discussed. The results showed that when the molar ratio of hydroxyl group/KOH/1-bromobutane was 1/1.9/1.9, reacting time 6.5 hr and reacting temperature 50°C, the alkyl-capping rate could reach over 80%. The end-capping rate would also increase with the increasing content of ethylene oxide in the random polyether, and the end-capping rate of the EO/PO/EO block-polyether was high than that of the random polyether with same molecular weight. Instead of 1-bromobutane, ethyl bromide promised a higher whereas chloralkane gave a lower end-capping rate respectively.

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