The thermal isomerization of cyclobutenes. XVI. 1,2-bis(trimethylsiloxy)cyclobutene

✍ Scribed by J. J. Bloomfield; H. M. Frey; J. Metcalfe

• Book ID: 102443038
• Publisher: John Wiley and Sons
• Year: 1971
• Tongue: English
• Weight: 232 KB
• Volume: 3
• Category: Article
• ISSN: 0538-8066
• DOI: 10.1002/kin.550030107

✦ Synopsis

The gas phase thermal isomerization of 1,2-bis(trimethylsiloxy)cyclobutene has been The reaction is homogeneous, kinetically The studied in the temperature range 172O-204OC. first order, and yields 2,3-bis(trimethylsiloxy)buta-l,3-diene as the only product. rate constants fit the Arrhenius equation k = 1013~509*0~120exp (-148,920 f 1060 J mole-'/RT) sec-l [k = 1013.509*0.120 exp (-35,590 f 250 cal mole-'/RT) sec-I] These results, taken with those obtained previously, demonstrate the insensitivity of the kinetics of the reaction to the nature of the groups substituted on the 1-and/or 2-positions of the cyclobutene ring.