Method for producing substituted fluorene monomers

Details Method for producing substituted fluorene monomers Method for producing substituted fluorene monomers

2006-09-05

2006-09-05

Price, Elvis O. (Department: 1621)

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

Organic compounds

Halogen containing

C570S206000, C570S190000, C570S216000, C570S246000, C570S252000, C570S253000, C570S257000, C570S261000

Reexamination Certificate

active

07102042

ABSTRACT:
A method for preparing a composition of the formulain a yield greater than 50% where R1is C 1-20 comprising the steps of combining fluorene or dibromo flourene, an excess of alkali metal hydroxide and a halogenated alkyl in the presence of a phase transfer catalyst but in the absence of a polar aprotic solvent; heating the combination; and separating the dialkylated fluorene or dialylated dibromo fluorene. If the flourene is not brominated prior to alkylation, the dialkylated fluorene is then brominated.

REFERENCES:
Bulletin L'Academie Polonaise Des Sciences, Makosza, 1967, 15, pp. 165-167.

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