Process for preparing linear organic oligomers

Details Process for preparing linear organic oligomers Process for preparing linear organic oligomers

2007-10-30

2007-10-30

Lambkin, Deborah C. (Department: 1626)

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C257S040000, C438S099000, C526S256000, C117S084000

Reexamination Certificate

active

10687148

ABSTRACT:
The present invention relates to a process for preparing compounds of the formula (I),wheren is an integer from 2 to 5,R1is H or a C1-C20-alkyl group which may be interrupted by one or more O or S atoms, silylene, phosphonoyl or phosphoryl groups andAr is substituted or unsubstituted 1,4-phenylene, 2,7-fluorene or 2,5-thiophene, with Ar being able to be identical or different,semiconductive layers comprising these compounds and their use in semiconductor technology.

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