Aniline → Fluorene

In the following Examples, 9,9-bis(3-methyl-4-aminophenyl)fluorene (OTBAF) was prepared as described in U.S. Pat. No. 4,684,678, Example 2. It was recrystallized from anhydrous dichloroethane prior to use. p-Phenylenediamine (PDA) was obtained in a sublimed, zone-refined form from Aldrich Chemical Company. 2,5-Dimethyl(p-phenylenediamine) (DMPDA) was obtained from Aldrich and recrystallized from absolute ethanol prior to use. 4,4'-(1,4-Phenylenebis(1-methylethylidene))bisbenzamine (EHPT) was obtained from Shell Chemical Company and was recrystallized from anhydrous dichloroethane prior to use. 9,9-Bis((3,5-dimethyl-4-amino)phenyl)fluorene (DM-OTBAF), 9,9-Bis[(3-ethyl-5-methyl-4-amino)phenyl)]fluorene (DE-OTBAF), and 9,9-bis[(2,5-diethyl-4-amino)phenyl]fluorene (DEAF) were prepared analogously, but using a different aniline derivative, as OTBAF, and were recrystallized prior to use. 3,3'-4,4'-Benzophenone tetracarboxylic acid dianhydride (BTDA) was purchased from Aldrich in a sublimed form. 4,4'-Oxydi(phthalic anhydride) (ODPA) was obtained from Occidental Chemical Company and purified via recrystallization from anisole. Pyromellitic dianhydride (PMDA), 2,2'-bis-((3,4-dicarboxyphenyl)-hexafluoropropane dianhydride (6FDA), 3,3'-4,4'-biphenyltetracarboxylic dianhydride (s-BPDA), and DSDA (3,3'-4,4'-diphenyl sulfone tetracarboxylic acid dianhydride) were purchased and used as received from Chriskev Company of Leawood, Kans.

1. customrecrystallized from absolute ethanol
2. customwas recrystallized from anhydrous dichloroethane
3. customas OTBAF, and were recrystallized
4. custompurified via recrystallization from anisole

ORDレコード

ord-24d58cc2f3c94cc8b0496e38c9d3de1c

出典データセット

uspto-grants-1999_10

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US05969088