Title:
PYRENE COMPOUND AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JP3520875
Kind Code:
B2
Abstract:
PURPOSE: To provide a new pyrene compound useful as an organic photoconductive material for electrophotography and a fluorescent brightener, especially as an organic photoconductive material for electrophotography.
CONSTITUTION: The pyrene compound of formula I (R1 is H, substituted or unsubstituted alkyl, substituted or unsubstituted alkoxy or substituted or unsubstituted phenyl; X is direct bond, CH2, CH2CH2, CH=CH, O or S), e.g. the pyrene compound of formula II. The pyrene compound of formula I can be produced by reacting an aldehyde compound of formula III with a phosphonium salt of formula IV (R2 is lower alkyl or phenyl; Y is halogen) or by reacting the aldehyde compound of formula III with a dialkyl phosphite compound of formula V (R3 is lower alkyl). The pyrene compound of formula I fully satisfies the principal requirements as a photo-sensitive material in the case of using the compound as an organic photo-conductive material for electrophotography. A flexible photo-sensitive material, etc., can be produced by the use of the compound.
Inventors:
Shimada, Tomoyuki
Sasaki, Masaomi
Ariga, Tamotsu
Tanaka, Chiaki
Sasaki, Masaomi
Ariga, Tamotsu
Tanaka, Chiaki
Application Number:
JP33542392A
Publication Date:
April 19, 2004
Filing Date:
November 20, 1992
Export Citation:
Assignee:
RICOH CO LTD
International Classes:
C07C209/78; C07C211/61; C07C217/92; C07D311/80; C07D335/10; G03G5/06; (IPC1-7): C07C211/61; C07C209/78; C07C217/92; C07D311/80; C07D335/10; G03G5/06
Attorney, Agent or Firm:
池浦 敏明 （外１名）
Previous Patent: 比色定量方法
Next Patent: POLYVINYLIDENE FLUORIDE HAVING GOOD MECHANICAL CHARACTERISTICS AND GOOD THERMOCHEMICAL STABILITY AND...
Next Patent: POLYVINYLIDENE FLUORIDE HAVING GOOD MECHANICAL CHARACTERISTICS AND GOOD THERMOCHEMICAL STABILITY AND...