Cyclopentadiene → 5-(1-Methyl-pent-4-enylidene)-cyclopenta-1,3-diene

HRID 52680Notes

Reaction equation

[CH3:1][C:2](=O)[CH2:3][CH2:4][CH:5]=[CH2:6].[CH:8]1[CH2:12][CH:11]=[CH:10][CH:9]=1>>[CH2:4]([C:5]([CH3:6])=[C:9]1[CH:8]=[CH:12][CH:11]=[CH:10]1)[CH2:3][CH:2]=[CH2:1]

Participants

Reactant 2

HCID 7612Cyclopentadiene

HCID 79895-Hexene-2-one

Product 1

HCID 125020675-(1-Methyl-pent-4-enylidene)-cyclopenta-1,3-diene

Procedure

A process according to claim 5 wherein 5-hexene-2-one is reacted with cyclopentadiene to yield 6-(3-butenyl)-6-methylfulvene which is then reacted with fluorenyllithium and then subjected to hydrolysis to yield 5-cyclopentadienyl-5-(9-fluorenyl )-1-hexene.

Sources & evidence

ORD record: ord-2783b7ed96b54a948bf551b0b3ec742c
Source dataset: uspto-grants-1997_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05616752

Reaction notes

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