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Ring Opening of 1-Methylcyclopropene and Cyclopropene: Matrix Infrared Spectroscopic Identification of 2-Butene-1,3-diyl and Propene-1,3-diyl

✍ Scribed by Günther Maier; Christian Lautz; Stefan Senger

Publisher: John Wiley and Sons
Year: 2000
Tongue: English
Weight: 132 KB
Volume: 6
Category: Article
ISSN: 0947-6539
DOI: 10.1002/(sici)1521-3765(20000417)6:8<1467::aid-chem1467>3.0.co;2-8

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✦ Synopsis

Triplet 2-butene-1,3-diyl (T-11) was generated on irradiation of 1-methylcyclopropene (10) in a bromine-doped xenon matrix and was characterized by means of IR spectroscopy for the first time. Experimental results suggest that triplet propene-1,3-diyl (T-3) is formed from cyclopropene (1) under similar conditions. In accordance with theoretical calculations, the experimental data indicate that the reactions 1 33 and 10 311 are the lowest energy ground-state pathways for the ring opening of 1 and 10, respectively.

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