JPS5531071A - Preparation of indenothiophene derivative - Google Patents
Preparation of indenothiophene derivativeInfo
- Publication number
- JPS5531071A JPS5531071A JP9487179A JP9487179A JPS5531071A JP S5531071 A JPS5531071 A JP S5531071A JP 9487179 A JP9487179 A JP 9487179A JP 9487179 A JP9487179 A JP 9487179A JP S5531071 A JPS5531071 A JP S5531071A
- Authority
- JP
- Japan
- Prior art keywords
- formula
- compound
- indeno
- thiophen
- subjected
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Photoreceptors In Electrophotography (AREA)
Abstract
NEW MATERIAL:A halogen substituted 4H-indeno[1,2-b]thiophen-4-one of formula I: (R1 and R2 are H or NO2; X is halogen).
EXAMPLE: 2-Bromo-6,8-dinitro-4H-indeno[1,2-b]thiophen-4-one.
USE: Photosensitive materials useful as a sensitizer for organic photoconductive materials, e.g. poly-N-vinylcarbazole, particularly as electrographic photosensitive materials for transfer process, to be used repeatedly.
PROCESS: A compound of formula II is reacted with a compound of formula III to give a compound of formula IV, which is hydrolyzed in an aqueous NaOH to form a free carboxyl group. The carboxyl group is subjected to ring closure in the presence of a dehydrating agent or converted to an acid chloride in the presence of thionyl chloride and subjected to ring closure in the presence of a Lewis acid to givea compound of formula V, which is halogenated to form the objective compound of formula I.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9487179A JPS5531071A (en) | 1979-07-27 | 1979-07-27 | Preparation of indenothiophene derivative |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9487179A JPS5531071A (en) | 1979-07-27 | 1979-07-27 | Preparation of indenothiophene derivative |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8174874A Division JPS5111759A (en) | 1974-07-18 | 1974-07-18 | INDENOCHIOFUENJUDOTAINO SEIHO |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5531071A true JPS5531071A (en) | 1980-03-05 |
JPS5545550B2 JPS5545550B2 (en) | 1980-11-18 |
Family
ID=14122104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9487179A Granted JPS5531071A (en) | 1979-07-27 | 1979-07-27 | Preparation of indenothiophene derivative |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5531071A (en) |
-
1979
- 1979-07-27 JP JP9487179A patent/JPS5531071A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5545550B2 (en) | 1980-11-18 |
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