Synthese von 1,2,3,4,5-Pentaisopropylcyclopentadien und 1,3,5-Tri-tert-butylcyclopentadien / Synthesis of 1,2,3,4,5-Pentaisopropylcyclopentadiene and 1,3,5-Tri-tert-butylcyclopentadiene
Open Access
- 1 October 1989
- journal article
- Published by Walter de Gruyter GmbH in Zeitschrift für Naturforschung B
- Vol. 44 (10) , 1293-1297
- https://doi.org/10.1515/znb-1989-1025
Abstract
Alkylation of tetraisopropylcyclopentadienyllithium (4b) gives a mixture of pentaisopropylcyclopentadiene isomers (1) which on metalation yields 11% pentaisopropylcyclopentadienylsodium (2). The mixture of products obtained on reacting 1,3-di-tert-butylcyclopentadienylsodium (6) with tert-butyliodide can be separated into 80% di-tert-butylcyclopentadiene and 9% 1,3,5-tritert-butylcyclopentadiene (7) by distillation.Keywords
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