Title: Functionalized Cyclopentadienes: Synthesis of 1,3-Bis(1,1-dimethylbut-3-cyclopentadienyl) Systems
Abstract: The synthesis of the new cyclopentadiene C5H4(CMe2CH2CHCH2)2 4 is described. The key step of the reaction sequence is the regioselective formation of the 2-(1,1-dimethylbut-3-enyl)-6,6-dimethylfulvene 2. The substitution pattern of 4 can be confirmed by the structure of the Diels-Alder product obtained from 2 and dimethyl acetylenedicarboxylate. Compound 4 is converted into the corresponding cyclopentadienides 5a, b via metallation with n-BuLi and KH, respectively. Compounds 4 and 5a, b are suitable candidates for the synthesis of functionalized cyclopentadienyl complexes in organometallic chemistry.
Publication Year: 2000
Publication Date: 2000-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 5
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