Reaction products and the mechanism in the dimerization of 2-methyl-1-alkenes over Lewis acid and Brønsted acid catalysts: anomalous reaction behaviors of 2-methyl-1-alkenes over Re2O7–Al2O3 metathesis catalyst

✍ Scribed by Tadashi Kawai; Hiroyuki Kudo; Takehiko Suzuki; Tomokazu Iyoda

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 149 KB
• Volume: 158
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(00)00084-4

✦ Synopsis

2-Methyl-1-alkenes have exhibited anomalous reaction behavior over a Re O -Al O metathesis catalyst. Self-metathe-

sis of 2-methyl-1-alkenes did not occur at all and several kinds of dimers were formed as major products. The dimer structures using 2-methyl-1-pentene as a model compound were identified by using various methods, such as ozonolysis, Ž .

1 1 3 hydrogenation, gas chromatography-mass spectrometry GC-MS and H NMR and C NMR. The dimerization mechanisms have been discussed.