Study on synthesizing metallocenes from fulvenes

Abstract

Fulvenes are one of the most important starting materials for synthesizing metallocenes. Reported here is a study on synthesis of metallocenes from a series of fulvenes (including alkylfulvenes, 6- aminofulvenes and 6-aminobenzofulvenes) via deprotonation or addition reaction. When treating 6-dimethylamino-6-methylfulvene with ZrCl4, it was found that an intramolecular C-C coupling and a NMe2H elimination reaction occurred leading to the formation of a novel allyl-bridged metallocene. The mechanism is discussed in detail. The chiral complexes were also synthesized from 6-dimethylamino-6- methylbenzofulvene and 1-methyl-2- cyclopentadienenylpyrrolidine.

Key words: FULVENE, ADDITION REACTION, FUSED RING COMPOUNDS, LIGANDS, SYNTHESIS, METALLOCENES, AMINO GROUP, CYCLOPENTADIENYL GROUP

CLC Number:

O627

Cite this article

Bai Shengdi;Wei Xuehong;Yuan Xinliang;Liu Diansheng. Study on synthesizing metallocenes from fulvenes[J]. Chin. J. Org. Chem., 2001, 21(11): 1040-1045.

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