Steric and electronic effects on the conformations and singlet oxygen ene regiochemistries of substituted tetramethylethylenes. The origin of the geminal effect
Investigations on the Migratory Aptitude of Allyl Groups in Aliphatic Carbenium-Ions
脂肪族碳负离子中烯丙基的迁移能力研究
METHOD FOR PRODUCING O-XYLENE
申请人:Schindler Götz-Peter
公开号:US20090326287A1
公开(公告)日:2009-12-31
A process for preparing o-xylene comprises the steps of
a) dimerizing 2-butenes to 3,4- and/or 2,3-dimethylhexenes and
b) aromatizing the 3,4- and/or 2,3-dimethylhexenes under dehydrogenating conditions to give o-xylene
and is suitable for the selective preparation of o-xylene.
A comparison of the ene reactions of singlet oxygen and triazolinediones with alkyl substituted tetramethylethylenes.
作者:Edward L. Clennan、Jaya J. Koola、Kristine A. Oolman
DOI:10.1016/s0040-4039(00)97164-8
日期:1990.1
The reactions of triazolinediones and singletoxygen are compared in their reactivity towards a series of tetrasubstituted olefins. The different regiochemistries of these reactions are discussed.
比较了三唑啉二酮和单线态氧对一系列四取代烯烃的反应性。讨论了这些反应的不同区域化学。
Henne; Matuszak, Journal of the American Chemical Society, 1944, vol. 66, p. 1651