Method for substituting indenofluorenes

Details Method for substituting indenofluorenes Method for substituting indenofluorenes

2011-07-05

2011-07-05

Parsa, Jafar (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C570S129000, C528S008000, C528S394000, C257S040000

Reexamination Certificate

active

07973203

ABSTRACT:
The invention relates to a process for the preparation of trans-indenofluorene compounds of the formula (Ia) or cis-indenofluorene compounds of the formula (Ib)in a reaction with at least one compound of the formula (IIa) or (IIb) respectivelywith at least one compound of the R-Hal in the presence of at least one organic base and at least one organic, polar, aprotic solvent.

REFERENCES:
patent: 4539507 (1985-09-01), VanSlyke et al.
patent: 5151629 (1992-09-01), VanSlyke
patent: 5840217 (1998-11-01), Lupo et al.
patent: 6458909 (2002-10-01), Spreitzer et al.
patent: 0676461 (1995-10-01), None
patent: 1491568 (2004-12-01), None
patent: WO-98/27136 (1998-06-01), None
Anemian et al., Monodisperse fluorene oligomers exhibiting strong dipolar coupling interaction, (Chemical Communication, 2002, 15, 1608-1609).

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